Medical Record Review Research Articles

Untangling biliary reconstruction in liver transplants for primary sclerosing cholangitis.

Biliary reconstruction technique during liver transplant (LT) for primary sclerosing cholangitis (PSC) remains controversial. This study aimed to evaluate the incidence of biliary complications in patients with PSChaving a duct-to-duct (DD) anastomosis or Roux-en-Y hepaticojejunostomy (HJ). A retrospective medical record review of patients with PSC undergoing LT at a single center between June 1st, 2000 and December 31st, 2022 was performed. Primary and secondary endpoints were the incidence of biliary strictures (anastomotic [BAS] and non-anastomotic strictures [NAS]) and non-stricture complications, respectively. Univariable and multivariable regression analyses were performed to identify associations with BAS formation. Patient survival was assessed using a Kaplan-Meier curve. From 105 transplants performed for 101 patients, 54 (51.4%) and 51 (48.5%) received DD and HJ anastomoses. Mean recipient age and follow-up was 47±13years and 98±69months. BAS was more common (48.1% vs. 27.5%, OR 2.45, 95% CI 1.09-5.54, p=0.03) and occurred earlier (4.8months, IQR 2.3-13.1 vs. 41.8months, IQR 7.2-88.7, p=0.001) in the DD than the HJ group. NAS (seen in 36.2% of transplants) had a comparable incidence (p=0.53) in HJ (38.9%) and DD (33.3%) groups. No difference was seen between cohorts regarding time to NAS, requirement for extended biliary dilatation programs (clinically significant biliary stricture), bile leak, and graft failure. On multivariable analysis, only the anastomotic technique was associated with BAS (DD adjusted OR 3.00, 95% CI 1.19-7.56, p=0.02). In carefully selected patients with PSC, DD anastomosis yielded similar outcomes to HJ anastomosis after liver transplantation.

Ceftriaxone-resistant viridans streptococci bacteraemia among patients treated at a large comprehensive cancer care centre: a retrospective eighteen-year study.

Viridans streptococci (VS) are opportunistic oral commensals and a common cause of bacteraemia in neutropenic patients. In this retrospective single centre cohort study, we investigated the prevalence of ceftriaxone resistance in VS (CRO-R VS) blood isolates between January 2005 and December 2022 from patients treated at a tertiary care hospital. Blood culture isolates were identified using biochemicals and mass spectrometry. Susceptibility testing was performed by Kirby-Bauer and Epsilometer tests. Demographic data, clinical outcomes and antimicrobial use were assessed through electronic medical record review. Among 791 patients with VS bacteraemia, 31 (4%) had confirmed CRO-R VS bacteraemia over the 18-year period; 20/31 (65%) were patients also treated at the Fred Hutchinson Cancer Center and were the focus of this study. Of these 20 patients, 18 (90%) had a known haematologic malignancy; 14 (70%) had undergone haematopoietic cell transplant (HCT); 18 (90%) were neutropenic at the time of culture. Two (10%) patients died within 30 days of CRO-R VS bacteraemia. All the CRO-R isolates (20/20) were members of the Streptococcus mitis group, 12 were multi-drug resistant; all were susceptible to vancomycin. Most patients received vancomycin once blood cultures were positive for a Gram-positive organism. During the study period, the frequency of VS isolate susceptibility testing increased; however, there was no concomitant increase in the percentage of CRO-R isolates at our facility. These data are important in an era where cefepime monotherapy is often used and reinforces the importance of routine resistance testing among VS bacteraemia.

The Effects of Multidisciplinary Intensive Rehabilitation on Cognitive and Executive Functions in Parkinson's Disease: A Clinical Database Analysis.

Background/Objectives: This study is based on data collected from a medical health record review to assess whether multidisciplinary intensive rehabilitation treatment in Parkinson's disease (PD) patients can improve global cognitive functioning and executive functions. Methods: The data related to PD patients were extrapolated from a clinical database called "NeuroRehab". A total of 104 PD patients (51 males; 53 females) performed 6 weeks of multidisciplinary intensive rehabilitation treatment in clinical practice from January 2019 to May 2023. This training program was characterized by three daily sessions of 60 min of activities (muscle relaxation and stretching exercises, moderate physical aerobic exercise, and occupational therapy). The patients were classified and stratified according to disease severity (according to the Hoehn and Yahr scale), postural instability and gait difficulty (PIGD) or tremor-dominant (TD) subtypes, disease duration (DD), and the presence of dyskinesias. The effect of multidisciplinary intensive rehabilitation treatment on cognitive and executive functions was evaluated through the administration of cognitive tests, such as the Mini-Mental State Examination (MMSE), Montreal Cognitive Assessment (MoCA), and Frontal Assessment Battery (FAB). All the parameters were evaluated at the baseline (T0) and at the end of the rehabilitation program (T1). Results: The multidisciplinary intensive rehabilitation treatment significantly improved cognitive performance. The MMSE, MoCA, and FAB test scores after the rehabilitation program (T1) were significantly higher compared to the scores obtained at the baseline (T0). Moreover, further analyses on subgroups of the patients who scored below the cut-off in the MMSE showed that at least 50% of patients overcame the cut-off score. Interestingly, the same analyses performed for the MoCA and FAB revealed a higher rate of improvement in cognitive functions, with normal scores in both tests after 6 weeks of multidisciplinary intensive rehabilitation treatment. Conclusions: This study revealed the potential effects of a 6-week multidisciplinary rehabilitation program in improving cognitive status in a PD inpatient cohort.

Referral Efficiency for Veterans with Osteoarthritis: A Quality Improvement Project.

Management of osteoarthritis, a common disease among veterans, includes referrals to orthopedic specialists. This requires an effective referral system. The aim of this study was to evaluate a quality improvement project addressing inefficiencies in the osteoarthritis referral process between primary care providers and orthopedic specialists. A pre- and post-intervention evaluation using medical record review and provider surveys was conducted to measure the process improvement of a primary care to orthopedic referral template. There was a 3.5% increase in the referral acceptance rate following the intervention. In addition, primary care providers perceived that role clarity and perception on making referrals had significantly improved. The largest perceived improved change among orthopedic specialists was in communication. A simple process change, such as improving the referral template, can help with communication, data transfer, and referral acceptance rates between primary care providers and orthopedic specialists. This in turn will benefit the large population of veterans needing orthopedic referrals for management of osteoarthritis.

Validation of Different Dementia Code-Based Definitions in a Population-Based Study of Rheumatoid Arthritis.

Rheumatoid arthritis (RA) has been associated with an elevated dementia risk. This study aimed to examine how different diagnostic dementia definitions perform in patients with RA compared to individuals without RA. The study population included 2050 individuals (1025 with RA) from a retrospective, population-based cohort in southern Minnesota and compared the performance of 3 code-based dementia diagnostic algorithms with medical record review diagnosis of dementia. For the overall comparison, each patient's complete medical history was used, with no time frames. Sensitivity analyses were performed using 1-, 2-, and 5-year windows around the date that dementia was identified in the medical record (reference standard). Algorithms performed very similarly in persons with and without RA. The algorithms generally had high specificity, negative predictive values, and accuracy, regardless of the time window studied (> 88%). Sensitivity and positive predictive values varied depending on the algorithm and the time window. Sensitivity values ranged 56.5-95.9%, and positive predictive values ranged 55.2-83.1%. Performance measures declined with more restrictive time windows. Routinely collected electronic health record (EHR) data were used to define code-based dementia diagnostic algorithms with good performance (vs diagnosis by medical record review). These results can inform future studies that use retrospective databases, especially in the same or a similar EHR infrastructure, to identify dementia in individuals with RA.

Epidemiology of Extrapulmonary Nontuberculous Mycobacterial Disease – 4 Emerging Infection Program Sites, 2021

Background: Extrapulmonary nontuberculous mycobacteria (ENTM) infections are difficult to treat and often require prolonged therapy or surgery. Few population-based studies describe ENTM epidemiology, though well-known healthcare-associated outbreaks have occurred. Using the first year of multi-site ENTM surveillance, we characterized rates and how frequently ENTM infections may be related to healthcare. Methods: CDC’s Emerging Infections Program conducted active, laboratory- and population-based surveillance for ENTM cases in 4 sites (Colorado [5 counties], Minnesota [statewide], New York [1 county], and Oregon [statewide]) in 2021. An incident ENTM case was NTM isolation from a non-pulmonary specimen, excluding stool or rectal swabs, in a resident of the surveillance area without either medical record documentation of prior ENTM infection or isolation of ENTM in the prior 12 months. Demographic, clinical, information on selected healthcare and community exposures, and laboratory data were collected via medical record review. We calculated incidence per 100,000 population using U.S. Census population estimates and performed descriptive analyses. Results: A total of 180 incident ENTM cases were reported in 2021. The crude annual incidence rate was 1.3 per 100,000 persons. Incidence increased with age (from 0.95 per 100,000 among 0–17 year-olds to 2.65 per 100,000 among persons ≥65), ranged from 0.8 among non-Hispanic Asian persons to 1.6 per 100,000 in non-Hispanic Black persons, and was similar among males (1.3 per 100,000) and females (1.4 per 100,000; Figure 1). Mycobacterium avium complex (64 [35.6%]) was the most frequently isolated species group, followed by Mycobacterium chelonae complex (31 [17.2%]). Skin and soft tissue infections were the most frequent infection type (37 [20.6%]); 27 cases (15.0%) were associated with disseminated and/or only bloodstream infection, and 56 cases (31.1%) had no infection type documented. Among 93 cases with localized ENTM infections (i.e., infections that were not disseminated and/or only bloodstream infections), 38.7% had only healthcare-related exposures, 14% had only community-related exposures and 6.5% had both exposure types at the site of infection (Figure 2). Healthcare-related exposures at the infection site included surgery (23.7%), injection/infusion (21.5%), and medical devices (18.3%). The most frequent community-related exposure at the infection site was trauma (17.2%). Only one case was part of a known outbreak, which was healthcare-associated. Conclusions: ENTM infections are relatively rare, but nearly half of patients with localized ENTM infections had prior healthcare-related exposures. This indicates that the burden of ENTM infections related to healthcare may be much larger than what has been suggested from reported outbreaks.

Association between hospital-onset SARS-CoV-2 and ending universal admission testing and masking at five US hospitals

Background: Many US hospitals have stopped universal masking and testing all patients on admission for SARS-CoV-2. We assessed the association of ending universal masking and admission testing with the incidence of hospital-onset SARS-CoV-2 infections in five Massachusetts hospitals. Method: We conducted a retrospective study of all patients admitted between March 6, 2020 and December 14, 2023 and identified hospital-onset SARS-CoV-2 infections (newly positive SARS-CoV-2 PCR tests >4d after arrival) and community-onset infections (newly positive ≤4d after arrival). We excluded cases if local infection control teams discontinued precautions within 4d (suggesting a false positive or remote/resolved infection). We calculated weekly ratios between hospital-onset and community-onset SARS-CoV-2 cases to account for changes in community SARS-CoV-2 incidence over time. We then performed interrupted time series analysis, looking for changes in the ratio of hospital-onset to community-onset cases across three periods: pre-Omicron period with universal testing and masking in place (March 6, 2020–Dec 16, 2021); Omicron period with universal testing and masking in place (Dec 17, 2021–May 11, 2023); and Omicron period without universal testing and masking (May 12, 2023–Dec 14, 2023). We performed medical record reviews on 100 randomly selected hospital-onset cases after May 12, 2023 to examine if community-onset cases were being misclassified as hospital-onset cases. Result: During the study period, there were 626,908 patient admissions, including 24,980 with community-onset and 1,510 with hospital-onset SARS-CoV-2 infections. The mean weekly ratio of new hospital-onset to community-onset SARS-CoV-2 infections rose from 2.6% before Omicron, to 8.5% (95% CI, 7.0–9.9%) during Omicron, to 17% (95% CI, 15–19%) after universal admission testing and masking ended (Figure 1). There was a significant immediate level change after the pre-Omicron-to-Omicron transition (140% relative increase; 95% CI, 40–240%) and after universal admission testing and masking ended (110% relative increase; 95% CI, 73–150%). On medical record review of 100 randomly selected hospital-onset SARS-CoV-2 cases after universal admission testing had ended, 89% had new symptoms at the time of testing, 80% had PCR cycle thresholds ≤30, 27% had a known COVID-19 exposure, and 97% met at least one of these criteria. In-hospital mortality occurred in 8% of the 100 reviewed cases. Conclusion: Stopping universal masking and admission testing of all hospitalized patients at five Massachusetts hospitals was associated with a significant increase in hospital-onset COVID-19. Nosocomial COVID-19 remains a common complication of hospital care. Preventing nosocomial infections in this vulnerable population remains an important safety goal.Disclosure: Theodore Pak: Founder/CEO - The East Harlem Software Company, Inc.

First Detected Transmission of C. auris within a Minnesota Healthcare Facility Following Exposure in the Emergency Department

Background: Candida auris reporting and submission of confirmed or possible isolates has been mandatory in Minnesota since August 2019. On August 9, 2023, the Minnesota Department of Health (MDH) was notified of a C. auris isolate in hip tissue from a patient in acute care hospital A (ACH-A). Only 9 cases of C. auris were detected prior to August 2023, in Minnesota, and all from patients with a history of international healthcare or healthcare in endemic C. auris locations of the United States. Methods: The MDH Public Health Laboratory (MDH-PHL) confirmed identification of C. auris from the ACH-A isolate by MALDI-TOF. MDH partnered with ACH-A to review medical records, assess infection prevention and control (IPC) practices, conduct contact tracing, and identify patients for colonization screening. Screening was performed on all patients that overlapped with the index case (case A) and were admitted to a facility in the same healthcare system as ACH-A. Facilities accepting discharged patients who overlapped with case A were contacted for colonization screening. Overlapping patients, no longer admitted to a healthcare facility, were sent a notification letter, and offered outpatient screening. Composite axilla/groin swabs were screened for C. auris using real-time PCR at MDH-PHL, who also performed whole genome sequencing (WGS) and single nucleotide polymorphism (SNP) analysis. Results: Case A’s medical record showed only Minnesota healthcare exposures, a surgical procedure in June 2023 and indicated the case overlapped with a previous case (case B) from July 2023, who had recent international healthcare. The two cases were hospitalized at ACH-B July 12-18, on different care floors without evident links to shared services. However, the cases were in adjacent rooms in ACH-B Emergency Department (ED) on July 3 for 5 hours, when C. auris status of case B was unknown. WGS indicated both isolates were within clade I (South Asian) and separated by 2 SNPs, suggesting relatedness. Extensive colonization screening occurred among 109 potentially exposed patients, including 18 patients from the ED. No additional C. auris was detected. Conclusions: This case represents the first detected transmission of C. auris within a Minnesota healthcare facility. The role of C. auris transmission within the ED is not well understood. Medical record review in combination with WGS analysis suggests potential transmission within the ED. Clinicians should be aware of the risks for C. auris transmission in the ED and follow all IPC measures to prevent transmission of this emerging fungal pathogen.

Dilation Outcomes for Transgender and Nonbinary Patients Following Gender-Affirming Vaginoplasty in a US County Safety-Net System

Purpose: The study purpose was to report neovaginal dilation outcomes and identify factors associated with pain, dilation discontinuation, and sexual function for transgender individuals who underwent gender-affirming vaginoplasty. Methods: A retrospective cohort study design was employed of transgender patients 18 years or older undergoing full-depth vaginoplasty and pelvic floor physical therapy (PFPT) between May 2018 and April 2021 at a safety-net hospital through medical record review and an online survey developed with a patient advisory board. Exclusion criterion was minimal-depth vaginoplasty or loss to follow-up. Results: In total, 137 patients included underwent full-depth vaginoplasty (46.7% survey response rate) 796.2 days (mean) postoperatively. Patients received 4.3 PFPT visits, with the last visit 12.4 weeks postoperatively (mean). Ninety patients (64.3%) achieved the 2 widest dilators, and 68 patients dilated to a depth of 5.5 inches or more (49.6%). The mean progression time between dilators was 5 weeks. Twenty-nine patients (21.2%) had pain preventing dilation, associated with minor or any surgical complication (OR = 5.7; 95% CI, 1.3-25.0) and posttraumatic stress disorder (P = .01), and had more PFPT visits for longer postoperatively than those without pain (P = .03). Nineteen respondents (32.2%) reported not dilating and were younger (P = .02), more likely to be lesbian, pansexual, or asexual (P = .01), and experienced depression (P = .01). Forty-four respondents (77.2%) were sexually active in the past 6 months, which was not associated with pain during dilation. However, respondents self-reporting dilation pain had greater dissatisfaction with their sex life (P = .02). Discussion: Patient dilation practices following vaginoplasty differ from protocols recommended by surgeons. Dilation goals should be adapted to individual patient characteristics and needs.

Improving Interpreter Access in the Pediatric Emergency Department: A Quality Improvement Initiative.

An increasing proportion of the population in the United States have limited English proficiency (LEP). Hospitals that receive federal funding must offer interpreter services. However, access is often lacking for patients. Patients with LEP are at higher risk for adverse events, and the Emergency Department is a particularly high-risk environment for these events. This quality improvement initiative took place from April 2021 to August 2022 in an urban, tertiary care Pediatric Emergency Department. A driver diagram informed four Plan-Do-Study-Act cycles, and data were collected through medical record review, patient surveys, and staff surveys. We tracked outcomes using run and control chart data. During the study period, the proportion of patients with LEP reporting "always" having an interpreter was unchanged (no centerline shift-control chart rules). Documentation of interpreter use for encounters with patients with LEP improved. Preferred language documentation and documentation of the need for an interpreter in the electronic medical record showed no change. Process measure data for staff-reported use of professional interpreters significantly increased, and the use of ad hoc interpreters decreased significantly. Length of stay did not change for English or LEP patients. This quality improvement initiative improved appropriate documentation of LEP and decreased use of nonqualified interpreters, although no change occurred in the proportion of patients who reported always having an interpreter. Patient satisfaction was unaffected.

COVID-19 Vaccination in the First Trimester and Major Structural Birth Defects Among Live Births

COVID-19 vaccination is recommended throughout pregnancy to prevent pregnancy complications and adverse birth outcomes associated with COVID-19 disease. To date, data on birth defects after first-trimester vaccination are limited. To evaluate the associated risks for selected major structural birth defects among live-born infants after first-trimester receipt of a messenger RNA (mRNA) COVID-19 vaccine. This was a retrospective cohort study of singleton pregnancies with estimated last menstrual period (LMP) between September 13, 2020, and April 3, 2021, and ending in live birth from March 5, 2021, to January 25, 2022. Included were data from 8 health systems in California, Oregon, Washington, Colorado, Minnesota, and Wisconsin in the Vaccine Safety Datalink. Receipt of 1 or 2 mRNA COVID-19 vaccine doses in the first trimester, as part of the primary series. Selected major structural birth defects among live-born infants, identified from electronic health data using validated algorithms, with neural tube defects confirmed via medical record review. Among 42 156 eligible pregnancies (mean [SD] maternal age, 30.9 [5.0] years) 7632 (18.1%) received an mRNA COVID-19 vaccine in the first trimester. Of 34 524 pregnancies without a first-trimester COVID-19 vaccination, 2045 (5.9%) were vaccinated before pregnancy, 13 494 (39.1%) during the second or third trimester, and 18 985 (55.0%) were unvaccinated before or during pregnancy. Compared with pregnant people unvaccinated in the first trimester, those vaccinated in the first trimester were older (mean [SD] age, 32.3 [4.5] years vs 30.6 [5.1] years) and differed by LMP date. After applying stabilized inverse probability weighting, differences in baseline characteristics between vaccinated and unvaccinated pregnant persons in the first trimester were negligible (standardized mean difference <0.20). Selected major structural birth defects occurred in 113 infants (1.48%) after first-trimester mRNA COVID-19 vaccination and in 488 infants (1.41%) without first-trimester vaccine exposure; the adjusted prevalence ratio was 1.02 (95% CI, 0.78-1.33). In secondary analyses, with major structural birth defect outcomes grouped by organ system, no significant differences between infants vaccinated or unvaccinated in the first trimester were identified. In this multisite cohort study, among live-born infants, first-trimester mRNA COVID-19 vaccine exposure was not associated with an increased risk for selected major structural birth defects.

Real world management of individuals with severe FXI deficiency and its impact on clinical outcomes: Experience from a haemophilia treatment centre.

The management of Factor XI deficiency is challenged by a variable association between FXI level and bleeding phenotype. Additionally, there is scarce data describing management strategies and their outcomes, specifically bleeding, thrombosis, and other complications. To evaluate bleeding, thrombosis, and other complications in individuals with severe FXI deficiency seen in our comprehensive haemophilia treatment centre (HTC). Peri-procedural management strategies and the resulting impact on bleeding and other clinically relevant outcomes were reported. Retrospective review of the electronic medical record of adult patients with severe FXI deficiency (<20% activity) seen at a New York City comprehensive HTC between 2017 and 2022. Procedures, haemostatic management, and outcomes were collected and analysed. We identified 38 individuals (64%) females with severe FXI deficiency. The mean age was 56±21 years (SD). The median FXI activity level was 3% (IQR: 1-8%). The mean BAT score was 3.1±2.4; (52%) individuals did not have a history of bleeding. A total of 256 surgeries and procedures were performed. There was reduced bleeding with preventative or reactive treatment during procedures. Arterial but not venous thrombotic complications were observed. Plasma was mostly used for procedures associated with higher risk of bleeding and antifibrinolytics for procedures at sites of high fibrinolysis. Current management strategies pose a burden of care for these patients and manifested as nonbleeding adverse events and changes in clinical management. These findings highlight the need for novel investigation in predicting and managing bleeding for individuals with severe FXI deficiency.

Poster 277: Increased Kinesiophobia Leads to Lower Return to Sport Rate and Clinical Outcomes Following Osteochondral Allograft Transplantation of the Knee

Objectives: Previous studies suggest that psychological readiness influences patients’ ability to return to sport (RTS) after surgery. The purpose of this study is to describe the postoperative psychological state of patients following osteochondral allograft (OCA) transplantation in the knee and to determine whether patient-perceived kinesiophobia is associated with the rate of RTS. Methods: A retrospective review of the electronic medical record at a single institution was conducted for all patients that underwent OCA transplantation from January 2010 to January 2020. Patient-reported outcomes including the Visual Analog Scale (VAS), Knee Injury and Osteoarthritis Outcome Score (KOOS), and the Tampa Scale of Kinesiophobia-11 (TSK-11) were collected. Patients were surveyed regarding their postoperative RTS status. Results: A total of 38 patients (52.6% female) were included in our analysis. Overall, RTS rate was 63.2% (n=24), with 50% (n=12) of these patients returning at a lower level of play. When comparing patients that RTS to those that did not, patients that RTS had significantly superior KOOS pain (p=0.019) and KOOS QOL (p=0.011). Measures of kinesiophobia (TSK-11) were significantly higher among patients that did not RTS (p=0.014), while satisfaction (p=0.410) and pain intensity (p=0.327) were comparable between groups. Logistic regression models controlling for demographic factors, VAS pain scores, and lesion size showed that for every one-point increase in TSK-11 kinesiophobia score, patients were 1.33 times more likely to return to sport at a lower level (p=0.009). For every one-point increase in TSK-11 scores KOOS QOL decreased by 2.39 points (p&lt;0.001). Conclusions: Fear of reinjury decreases the likelihood that patients will return to their pre-operative level of sport after OCA transplantation. Patients that do not RTS report significantly greater fear of reinjury and inferior clinical outcomes, despite similar levels of satisfaction and pain compared to those that RTS.

Poster 298: Complications Following Tibial Tubercle Osteotomy (TTO) at a Tertiary-Care Institution

Objectives: Tibial tubercle osteotomy (TTO) can be used to treat patellar instability, patellar maltracking/compression, and patellofemoral cartilage damage. Reported complication rates following TTO range from 1% to 46%, with varied definitions of complication. The purpose of our study was to define the incidence of complications following TTO in a large cohort at a tertiary-care institution. Methods: Patients who underwent TTO between 2011 and 2023 were retrospectively identified. Patients who did not have at least 30 days of follow-up were excluded. Revision cases were excluded. Information about complications was obtained through review of the electronic medical record. Major complications included intraoperative fracture, postoperative fracture, loss of fixation, delayed union, non-union, pulmonary embolism (PE), patella tendon rupture, deep infection, painful hardware requiring removal, arthrofibrosis requiring reoperation, re-dislocation, reoperation for other indications, readmission, and revision. Minor complications included superficial infection, deep venous thrombosis (DVT), wound dehiscence, and postoperative neurapraxia. Chi-square tests were used for categorical variables, t tests for continuous variables. Results: Four hundred and seventy-six TTOs in 436 patients were included in the final cohort with a mean follow-up of 1.9 years. Patients were 68.5% female with average age 28.3 years.The overall complication rate was 27.5 percent. Major complications were recorded in 23.7% of patients, and minor complications in 8.4% of patients. Reoperation was required in 16.6% of patients at an average of 14 months after index procedure. The most common complications were painful hardware requiring removal (6.5%), superficial infection (5.7%), and arthrofibrosis requiring return to the operating room (5.0%). These and other complications are reported in Table 1 at 30 days, 90 days, 1 year, and final follow-up. Table 2 compares patient characteristics for those who had a major complication versus those who did not. Patients who had a major complication were older than those who did not (30.2 vs 27.7, p = .013). A higher proportion of patients who had a major complication had a previous ipsilateral surgery (57.5% vs. 36.6%, p &lt; .001), had an indication of cartilage lesion/arthritis (71.7% vs. 60.6%, p = .034), and underwent a concomitant cartilage reconstruction/repair procedure (51.8% vs. 39.1%, p = .012). A lower proportion of patients who had a major complication had an indication of instability (56.6% vs. 67.2%, p = .043) and underwent a soft tissue reconstruction (46.4% vs. 60.1%, p = .012). There were no differences in the proportion of major complications by sex or American Society of Anesthesiologists score. Mean body mass index (BMI) did not differ significantly between patients who had a major complication and those who did not. Hardware removal was required in 6.5% of patients. More patients with headed as compared to headless screws required hardware removal (13.2% vs. 1.7%, p &lt; .001). Arthrofibrosis requiring reoperation was observed in 5.7% of patients. A significantly higher proportion of patients who underwent a concomitant cartilage restoration/repair procedure had arthrofibrosis postoperatively (10.0% vs. 2.5%, p &lt; 001). There was no difference in arthrofibrosis requiring reoperation by race, sex, age, BMI, smoking status, prior ipsilateral surgery, or other concomitant procedures. Conclusions: The complication rate following TTO was 27.5%, with painful hardware requiring removal (6.5%) as the most common complication, and a reoperation rate of 16.6% at a mean follow-up of 1.9 years. Major complications were observed in 23.7% of patients and were more common in older patients, patients with an indication of cartilage lesion/arthritis, patients who underwent a cartilage restoration/repair procedure, and patients with a previous ipsilateral surgery. Hardware removal was more common in patients with headed screws. Arthrofibrosis was more common in patients who underwent a concomitant cartilage restoration/repair procedure.

Validating new coding algorithms to improve identification of alcohol-associated and nonalcohol-associated cirrhosis hospitalizations in administrative databases.

Alcohol (AC) and nonalcohol-associated cirrhosis (NAC) epidemiology studies are limited by available case definitions. We compared the diagnostic accuracy of previous and newly developed case definitions to identify AC and NAC hospitalizations. We randomly selected 700 hospitalizations from the 2008 to 2022 Canadian Discharge Abstract Database with alcohol-associated and cirrhosis-related International Classification of Diseases 10th revision codes. We compared standard approaches for AC (ie, AC code alone and alcohol use disorder and nonspecific cirrhosis codes together) and NAC (ie, NAC codes alone) case identification to newly developed approaches that combine standard approaches with new code combinations. Using electronic medical record review as the reference standard, we calculated case definition positive and negative predictive values, sensitivity, specificity, and AUROC. Electronic medical records were available for 671 admissions; 252 had confirmed AC and 195 NAC. Compared to previous AC definitions, the newly developed algorithm selecting for the AC code, alcohol-associated hepatic failure code, or alcohol use disorder code with a decompensated cirrhosis-related condition or NAC code provided the best overall positive predictive value (91%, 95% CI: 87-95), negative predictive value (89%, CI: 86-92), sensitivity (81%, CI: 76-86), specificity (96%, CI: 93-97), and AUROC (0.88, CI: 0.85-0.91). Comparing all evaluated NAC definitions, high sensitivity (92%, CI: 87-95), specificity (82%, CI: 79-86), negative predictive value (96%, CI: 94-98), AUROC (0.87, CI: 0.84-0.90), but relatively low positive predictive value (68%, CI: 62-74) were obtained by excluding alcohol use disorder codes and using either a NAC code in any diagnostic position or a primary diagnostic code for HCC, unspecified/chronic hepatic failure, esophageal varices without bleeding, or hepatorenal syndrome. New case definitions show enhanced accuracy for identifying hospitalizations for AC and NAC compared to previously used approaches.

Electronic Health Record Data for Lyme Disease Surveillance, Massachusetts, USA, 2017-2018.

Lyme disease surveillance based on provider and laboratory reports underestimates incidence. We developed an algorithm for automating surveillance using electronic health record data. We identified potential Lyme disease markers in electronic health record data (laboratory tests, diagnosis codes, prescriptions) from January 2017-December 2018 in 2 large practice groups in Massachusetts, USA. We calculated their sensitivities and positive predictive values (PPV), alone and in combination, relative to medical record review. Sensitivities ranged from 57% (95% CI 47%-69%) for immunoassays to 87% (95% CI 70%-100%) for diagnosis codes. PPVs ranged from 53% (95% CI 43%-61%) for diagnosis codes to 58% (95% CI 50%-66%) for immunoassays. The combination of a diagnosis code and antibiotics within 14 days or a positive Western blot had a sensitivity of 100% (95% CI 86%-100%) and PPV of 82% (95% CI 75%-89%). This algorithm could make Lyme disease surveillance more efficient and consistent.

Clinical Factors Associated With Mode of Death Following Cardiac Arrest

Background Death after resuscitation from cardiac arrest is common. Although associated factors have been identified, knowledge about their relationship with specific modes of death is limited. Objective To identify clinical factors associated with specific modes of death following cardiac arrest. Methods This study involved a retrospective medical record review of patients admitted to a single health care center from January 2015 to March 2020 after resuscitation from cardiac arrest who died during their index hospitalization. Mode of death was categorized as either brain death, withdrawal of life-sustaining therapies due to neurologic causes, death due to medical causes, or withdrawal of life-sustaining therapies due to patient preference. Clinical characteristics across modes of death were compared. Results The analysis included 731 patients. Death due to medical causes was the most common mode of death. Compared with the other groups of patients, those with brain death were younger, had fewer comorbidities, were more likely to have experienced unwitnessed and longer cardiac arrest, and had more severe acidosis and hyperglycemia on presentation. Patients who died owing to medical causes or withdrawal of life-sustaining therapies due to patient preference were older and had more comorbidities, fewer unfavorable cardiac arrest characteristics, and fewer days between cardiac arrest and death. Conclusions Significant associations were found between several clinical characteristics and specific mode of death following cardiac arrest. Decision-making regarding withdrawal of care after resuscitation from cardiac arrest should be based on a multimodal approach that takes account of a variety of personal and clinical factors.

ANALYSIS OF TRANEXAMIC ACID USAGE IN ADULT SPINAL DEFORMITY PATIENTS WITH RELATIVE CONTRAINDICATIONS IN PAKISTAN

Patients who require complex spinal surgery require a huge amount of blood transfusion perioperatively. The anemia, the formation of hematoma, and increased coagulation properties, which are consequences of massive blood loss itself can negatively affect the postoperative clinical results.Objectives: The main objective of the study is to find the tranexamic acid usage in adult spinal deformity patients with relative contraindications in Pakistan. Methodology of the study: This prospective observational study was conducted at Pakistan institute of medical sciences from 2016-2020. Data were collected from 185 patients of spine deformity.Data were collected through a combination of medical record reviews and direct patient interviews. Demographic details, including age, gender, weight, and height, were recorded for each of the 185 patients. Comprehensive medical histories were obtained to identify comorbid conditions and relative contraindications for tranexamic acid (TXA) use, such as a history of thromboembolic events, renal impairment, and concurrent anticoagulant therapy. Results: Data were collected from 185 patients according to criteria of the study. Mean age of the patients were 58.4 ± 12.3 years. Out of 185, there were 112 (60.5%) females and 73 (39.5%) male patients. Mean BMI was 28.1 ± 5.4 kg/m2. 49.7% were also suffering from hypertension, 24.3% from DM and 20% from osteoporosis.The regression coefficient (β) for total blood loss was -250 mL, with a 95% confidence interval (CI) of [-300, -200], and a p-value of &lt; 0.001. Similarly, the regression coefficient for the number of blood transfusions was -1.2 units, with a 95% confidence interval of [-1.5, -0.9], and a p-value of &lt; 0.001.Conclusion: Tranexamic acid effectively reduces blood loss and transfusion requirements in adult spinal deformity surgeries, even among patients with relative contraindications. The associated complication rates are manageable with careful patient selection and monitoring.

Clinical outcomes following transtibial medial meniscal root repair are maintained at long-term follow-up.

To evaluate long-term outcomes of patients treated with posterior medial meniscal root tear (PMMRT) repair through assessment of functional outcome scores and to identify patient surgical and magnetic resonance imaging (MRI) characteristics associated with improved outcomes. This was a single-centre, retrospective study evaluating patients who had undergone a PMMR repair using a transtibial suture pullout technique with two locking cinch sutures. This was performed as a follow-up to previously published 2-year and 5-year outcome studies, using the same cohort. All patients from the prior short-term and midterm studies were invited to participate. Patient-reported outcome (PROs) scores, including the International Knee Documentation Committee (IKDC) and Lysholm scores, were collected. Previously collected demographic data were updated based on review of the electronic medical record. Patient outcomes were assessed preoperatively, as well as at 2-year, 5-yearand 8-yearpostoperatively. MRI outcome measurements were assessed at 2-year and 5-year follow-ups. All statistical analysis was performed using SPSS version 26. Seventeen patients of the original 18 patients (94.4%) were included in the final analysis. Additionally, three patients who had additional ipsilateral surgery were excluded from the analysis of PROs. The IKDC score significantly increased from 44.7 ± 11.6 at preoperative baseline to 71.2 ± 21.3 at 8-yearpost-operation (p = 0.001). There were no significant differences in IKDC score between 2-year and 8-year follow-ups (p = n.s.) or 5-year and 8-year follow-ups (p = n.s.). The Lysholm score significantly increased from 49.6 ± 7.3 at preoperative baseline to 76.4 ± 17.2 at 8-year follow-up (p < 0.001). There was no significant difference in Lysholm scores between 2-year and 8-year follow-ups (p = n.s.) or 5-year and 8-year follow-ups (p = n.s.). A linear regression analysis found that 5-year IKDC scores were significantly correlated with 8-year IKDC scores (β = 0.681, p = 0.038). At 8-year follow-up, four (23.5%) patients required additional procedures on their operative knee (one total knee arthroplasty conversion). Patients treated with repair of PMMRT had maintenance of clinical outcome improvements at long-term follow-up despite worsening MRI outcomes at short-term and medium-term follow-ups. While a high proportion of patients required additional procedures on their operative knee at 8-yearfollow-up, few of these patient's additional procedures were related to failure of their primary surgery. Providers and patients may expect durable clinical outcomes following the repair of PMMRT, irrespective of radiographic appearance. Level IV.

Association of Maternal Lifestyle Factors and Hemoglobin with Low Birth Weight

Background: Low birth weight (LBW) is a major global public health problem and a leading cause of neonatal mortality, as well as a significant risk factor for infant and under-five morbidity and mortality. Objective: The study aimed to determine the association between maternal lifestyle factors and low birth weight, and to investigate the relationship between maternal hemoglobin levels and LBW infants. Methods: A total of 518 samples were included in the study, comprising 259 cases and 259 controls. Data were collected using a standard questionnaire administered through interviews and medical record reviews. The questionnaire covered maternal lifestyle factors and hemoglobin levels. Logistic regression was employed to analyze the associations between maternal lifestyle risk factors, hemoglobin levels, and low birth weight. Descriptive statistics were calculated for each variable, and statistical relationships were assessed using IBM SPSS version 25, with a significance level set at 0.05. Results: The study found that maternal hemoglobin levels (OR=0.742, 95% CI: 0.644-0.855, p&lt;0.001) and gestational age (OR=0.776, 95% CI: 0.696-0.866, p&lt;0.001) were inversely associated with low birth weight. Conversely, previous pregnancies (OR=5.043, 95% CI: 2.004-12.689, p=0.001 for one previous pregnancy), low maternal income (OR=7.156, 95% CI: 2.369-21.617, p&lt;0.001), specific occupations (OR=2.354, 95% CI: 1.416-3.914, p=0.001), and being underweight (OR=26.829, p&lt;0.001) were positively associated with low birth weight. Conclusion: These findings emphasize the importance of considering various socio-economic and health factors in the prevention and management of low birth weight, with a particular focus on maternal occupational status, income, previous pregnancies, gestational age, pregnancy complications, and maternal hemoglobin levels.