Incomplete Workup Research Articles

Evaluation for primary hyperparathyroidism after radioactive iodine treatment in patients with Graves' disease

BackgroundRetrospective studies are conflicting regarding the risk of primary hyperparathyroidism after radioactive iodine treatment. We hypothesized that primary hyperparathyroidism rates are greater after radioactive iodine than after thyroidectomy and that patients with hypercalcemia after treatment for Graves' disease are not adequately evaluated for primary hyperparathyroidism, contributing to underdiagnosis of radioactive iodine–associated primary hyperparathyroidism. MethodsThis retrospective review considers patients undergoing radioactive iodine or thyroidectomy for Graves' disease at a tertiary referral center between January 1, 2000, and January 31, 2022. Patients were identified using a hospital-based cohort discovery tool; exclusions included history of head/neck radiation, primary hyperparathyroidism/parathyroidectomy, renal dysfunction diagnoses, or treatment with both radioactive iodine and thyroidectomy. Patients with an elevated calcium (>10.2 mg/dL) level measured after treatment were classified as “incomplete workup” (no parathyroid hormone), “likely primary hyperparathyroidism” (parathyroid hormone >40 pg/dL), or “unlikely primary hyperparathyroidism” (parathyroid hormone <40 pg/dL). ResultsOf 900 patients, 468 (52%) had been treated with radioactive iodine and 432 (48%) with thyroidectomy. At a median follow-up of 9.39 years (interquartile range, 5.12–13.25), 25% (n = 224) of patients did not have a serum calcium measured and 52 (8%, n = 676) patients had an elevated calcium level. Hypercalcemia was more common after radioactive iodine (10%) than thyroidectomy (6%, P = .061). Of patients with hypercalcemia, 33 (63%) were “incomplete workup,” 5 (10%) were “likely primary hyperparathyroidism,” and 14 (27%) were “unlikely primary hyperparathyroidism.” There was no difference in primary hyperparathyroidism workup rates between patients treated with radioactive iodine (n = 23) and thyroidectomy (n = 10, P = .389). ConclusionsPatients treated with radioactive iodine for Graves' disease may experience an elevated rate of hypercalcemia, but the majority are not adequately evaluated for primary hyperparathyroidism. Patients with a history of radioactive iodine should undergo regular calcium screening and, if elevated, appropriate workup for primary hyperparathyroidism.

Clinical and imaging presentations are associated with function in incidental adrenocortical adenomas: a retrospective cohort study.

The aim of this study is to assess whether clinical and imaging characteristics are associated with the hormonal subtype, growth, and adrenalectomy for incidental adrenal cortical adenomas (ACAs). This is a single-center cohort study. Consecutive adult patients with incidental ACA were diagnosed between 2000 and 2016. Of the 1516 patients with incidental ACA (median age 59 years, 62% women), 699 (46%) had nonfunctioning adenomas (NFAs), 482 (31%) had mild autonomous cortisol secretion (MACS), 62 (4%) had primary aldosteronism (PA), 39 (3%) had Cushing syndrome, 18 (1%) had PA and MACS, and 226 (15%) had incomplete work-up. Age, sex, tumor size, and tumor laterality, but not unenhanced computed tomography Hounsfield units (HU), were associated with hormonal subtypes. In a multivariable analysis, ≥1 cm growth was associated with younger age (odds ratio [OR] = 0.8 per 5-year increase, P = .0047) and longer imaging follow-up (OR = 1.2 per year, P < .0001). Adrenalectomy was performed in 355 (23%) patients, including 38% of MACS and 15% of NFA. Adrenalectomy for NFA and MACS was more common in younger patients (OR = 0.79 per 5-year increase, P = .002), larger initial tumor size (OR = 2.3 per 1 cm increase, P < .0001), ≥1 cm growth (OR = 15.3, P < .0001), and higher postdexamethasone cortisol (OR = 6.6 for >5 vs <1.8 μg/dL, P = .002). Age, sex, tumor size, and laterality were associated with ACA hormonal subtype and can guide diagnosis and management. Tumor growth was more common with younger age and longer follow-up. Unenhanced HU did not predict hormonal subtype or growth. Adrenalectomy for MACS and NFA was mainly performed in younger patients with larger tumor size, growth, and elevated postdexamethasone cortisol.

The yield of a comprehensive investigation protocol for the diagnosis of true idiopathic ventricular fibrillation in a real-life clinical setting

Traditionally, aborted cardiac arrest (ACA) due to documented ventricular fibrillation (VF) in the absence of structural heart disease has been termed idiopathic VF. By careful evaluation, a specific etiology can be found in a substantial proportion of patients. The aim of this survey was to assess the yield of an advanced diagnostic work-up to reveal a causative etiology in a real-life clinical setting. Patients from the University Hospital Brno’s ACA database were analyzed (514 patients in total). Forty-six patients (31 males) fulfilled the inclusion criteria, which were: (1) absence of structural pathology on echocardiography; (2) absence of coronary artery disease; and (3) absence of reversible cause of ACA. The diagnostic work-up consisted in cardiac magnetic resonance imaging, stress testing, sodium channel blocker challenge, and genetic testing according to the availability of the method and patient compliance. A specific disease was found in 17 individuals (37.0%), although at least one diagnostic step was refused by 13 patients (28.3%). True idiopathic VF was confirmed in 7 patients (15.2%), for whom the entire diagnostic work-up did not reveal any specific pathology. Our real-life survey shows that, even with an incomplete diagnostic work-up (due to the unavailability of a particular method or variable patient compliance), a specific diagnosis can be identified in more than one third of the cases of “idiopathic” VF, which can thus enable targeted treatment and family screening.

Hidradenitis Suppurativa-Induced Breast Abscess and Congenital Nipple Inversion Mimicking Inflammatory Breast Cancer with Review of the Literature

Inflammatory breast cancer (IBC) is an aggressive, but rare, malignancy that may present cutaneously, so dermatologists may be some of the first providers to observe the initial clinical signs. A number of benign conditions may mimic the cutaneous and radiographic features of IBC. We present a case of a patient with hidradenitis suppurativa of the breast complicated by abscess formation with cutaneous findings mimicking IBC, including abrupt erythema, edema, nipple retraction, and peau d’orange changes. This case highlights dermatologic findings that should prompt an urgent evaluation for IBC, features that differentiate clinical mimickers from IBC, and potential pitfalls in diagnosing IBC if an improper or incomplete workup is pursued. We also present a review of the literature regarding mimickers of IBC.

Barriers to longitudinal follow-up for hepatitis B treatment in rural Sierra Leone: A mixed methods study of retention in care.

HBV disproportionately affects resource-limited settings, and retaining patients in longitudinal care remains challenging. We conducted a mixed methods investigation to understand the causes of losses to follow-up within an HBV clinic in rural Sierra Leone. We developed a multivariable logistic regression model of baseline clinical and sociodemographic factors predicting losses to follow-up, defined as failing to present for a follow-up visit within 14 months of enrollment. We included patients enrolled between April 30, 2019 and March 1, 2020, permitting 14 months of follow-up by April 30, 2021. We then developed a survey to solicit patient perspectives on the challenges surrounding retention. We interviewed randomly selected patients absent from HBV care for at least 6 months. Among 271 patients enrolled in the Kono HBV clinic, 176 (64.9%) did not have a follow-up visit within 14 months of the study end point. Incomplete baseline workup (aOR 2.9; 95% CI: 1.6-4.8), lack of treatment at baseline (aOR 5.0; 95% CI: 1.7-14.4), and having cirrhosis at baseline (aOR 3.3; 95% CI: 0.99-10.8) were independently associated with being lost to follow-up. For the patient survey, 21 patients completed the interview (median age 34 years [IQR: 25-38]). Travel-related factors were the most frequently reported barrier to retention (57%). Almost 30% suggested improved customer care might support retention in care; 24% requested to be given medication. In our setting, factors that might reduce losses to follow-up included expanded criteria for treatment initiation, overcoming transportation barriers, reducing wait times, ensuring against stockouts, and scaling up point-of-care testing services.

The potential role of the aortic valve calcium score by computed tomography scan in the diagnosis of concomitant cardiac amyloidosis in patients with severe aortic stenosis

Abstract Background Cardiac amyloidosis (CA) and aortic stenosis (AS) are two related, but the diagnosis of both these condition is challenging because of the common phenotype. Different predictors of CA in AS have been proposed in the last years. Purpose To identify a new red-flag of concomitant CA in patients with severe AS analyzing aortic valve calcium burden using calcium score, calcium mass and calcium volume by computed tomography scan (CT). Methods 55 patients with severe AS and suspicion of concomitant CA were retrospectively enrolled from 2009 to 2022. 5 Patients with a bicuspid aortic valve, previous aortic valve replacement, or an incomplete diagnostic workup for CA were excluded. 50 patients underwent CT-scan and were included in the final analysis. Results Of the 50 patients, 21 patients (AS-CA) had positive 99m Tc-DPD bone scintigraphy (19 with score 2 and 2 with score 3), none of the patients presented laboratory suspicion for AL amyloidosis, so all the patients had a diagnosis of transthyetin related CA. 29 patients (AS alone) had negative bone scintigraphy. AVA indexed were comparable between AS-CA and AS alone groups (0.3 mm2/m2, in both the group p: 0.88). Stroke volume, maximum and mean gradient were significatively lower in AS-CA group (29 vs 36 ml/m2, p: 0.01, 60 vs 72 mmHg, p: 0.016 and 34 vs 45 mmHg, p:0.01) with a higher percentage of low flow-low gradient aortic stenosis in AS-CA group (11 patients,52% vs 5 patients in AS-alone 17%, p: 0.014)ECG in AS-CA group showed atrial fibrillation in 12 patients (57%), versus 3 patients in the AS-alone group (10%), and lower QRS voltages (peripheral QRS score 44 mV vs 58 mV, p-value:0.017; total QRS score 120 mV versus 160 mV, p-value: 0.005). The echocardiogram showed a more thickened IVS and PW in AS-CA patients (17 versus 15 mm, p: 0.03 and 15 versus 14 mm, p: 0.01) with a decreases longitudinal systolic function (septal S wave at TDI 4.4 vs 5.1 cm/s, p: 0.011, lateral S wave 4.5 versus 5.6 cm/s, p: 0.014).CT- aortic valve calcium was quantified by an experienced operator. A statistically significant difference between AS-CA and AS-alone groups was observed in calcium score (3569 vs 4480 Agatston units, p: 0.017) calcium volume (2575 vs 3445 mm3, p: 0.012) and calcium mass (798 vs 1082 g, p: 0.016).At logistic regression analyses,confirmed perdictors of concomitant CA in AS were: AS low flow- low gradient (p:0.011), atrial fibrillation (p:0.001), lower QRS score periferical(p:0.004) and total (p:0.002) and a decreased longitudinal systolic function (p:0.028). Regarding the aortic valve calcium burden, calcium score( p:0.031) and calcium volume(p:0.026) were confirmed predictor of CA in AS. Conclusions This study shows that calcium burden at CT scan in patients with concomitant CA-AS is significatily lower than in patients with AS alone. Calcium burden at CT scan could be used in addition to the classical parameters as a potential red-flag of concomitant CA in AS severe.

Impact of abnormal uterine bleeding care in premenopausal patients prior to endometrial malignancy diagnosis

BackgroundLiterature evaluating the management of abnormal uterine bleeding in premenopausal patients prior to endometrial malignancy diagnosis is lacking. ObjectiveTo evaluate predictors and consequences of inadequate evaluation and management of abnormal uterine bleeding and time to endometrial sampling in premenopausal patients prior to endometrial malignancy diagnosis.Study Design.This was a retrospective cohort study of premenopausal individuals with endometrioid endometrial cancer or atypical hyperplasia at a single institution from 2015 to 2020.. Complete noninvasive management encompassed pelvic exam, ultrasound, and progestin treatment before or in conjunction with the endometrial sampling of diagnosis. Multivariable logistic and ordinal odds models were used to evaluate predictors and outcomes. Results152 subjects were included, 80.3 % with cancer and 19.7 % with atypical hyperplasia. The majority of patients had anovulatory bleeding, obesityand recent health care. Only 20.4 % had complete nonvinvasive management, and only 12.5 % had complete noninvasive management or endometrial sampling within 2 months of presentation with abnormal bleeding. Class III obesity reduced the likelihood of complete assessment and increased time to sampling, while age 45 and up and parity reduced time to sampling. Most patients had partial workup but no progestin treatment and long intervals before endometrial sampling after presentation to a provider with abnormal bleeding. Incomplete workup correlated to worse cancer grade and stage. ConclusionDespite high clinical risk and health care contact, most patients had insufficient gynecologic management preceding a diagnosis of endometrial malignancy. Inadequate care correlated to worse oncologic outcomes and demonstrates missed opportunities for early detection and prevention of endometrial cancer.

Real-world challenges in the diagnosis of primary progressive multiple sclerosis.

Despite the 2017 revisions to the McDonald criteria, diagnosing primary progressive multiple sclerosis (PPMS) remains challenging. To improve clinical practice, we aimed to identify frequent diagnostic challenges in a real-world setting and associate these with the performance of the 2010 and 2017 PPMS diagnostic McDonald criteria. We retrospectively recorded clinical, radiological and laboratory characteristics at time of diagnosis from designated PPMS patient files. Possible complicating factors were recorded such as confounding comorbidity, signs indicative of alternative diagnoses, possible earlier relapses, and/or incomplete diagnostic workup (no cerebrospinal fluid examination and/or MRI brain and spinal cord). We calculated the percentages of patients fulfilling the 2010 and 2017 McDonald criteria after censoring patients with these complicating factors. A total of 322 designated PPMS patients were included. Of all participants, we found that n=28/322 had confounding comorbidity and/or signs indicative of alternative diagnoses, n=103/294 had possible initial relapsing and/or uncertainly progressive phenotypes, and n=73/191 received an incomplete diagnostic work-up. When applying the 2010 and 2017 diagnostic PPMS McDonald criteria on n=118 cases with a full diagnostic workup and a primary progressive disease course without a better alternative explanation, these were met by 104/118 (88.1%) and 98/118 remaining patients (83.1%), respectively (p=0.15). Accurate interpretation of the initial clinical course, consideration of alternative diagnoses, and a full diagnostic workup are the cornerstones of a PPMS diagnosis. When these conditions are met, the 2010 and 2017 McDonald criteria for PPMS perform similarly, emphasizing the importance of their appropriate application in clinical practice.

Diagnostic testing in people with primary ciliary dyskinesia: An international participatory study.

Diagnostic tests are important in primary ciliary dyskinesia (PCD), a rare disease, to confirm the diagnosis and characterize the disease. We compared diagnostic tests for PCD between countries worldwide, assessed whether people with PCD recall their tests, and identified factors associated with the use of tests. We used cross-sectional data from COVID-PCD-an international participatory cohort study collecting information directly from people with PCD. The baseline questionnaire inquired about tests used for PCD diagnosis. Using logistic regression, we investigated factors associated with measurement of nasal nitric oxide (nNO), biopsy for electron or video microscopy, and genetic testing. We included data from 747 participants (60% females) from 49 countries worldwide with median age 27 (interquartile range 12-44). Most (92%) reported diagnostic tests for PCD. Participants reported measurements of nNO (342; 49%), biopsy samples (561; 75%), and genetic tests (435; 58%). The reported use of individual tests, such as genetics, varied between countries from 38% in Switzerland to 68% in North America. Participant recall of test type also differed between countries with lowest recall in Switzerland. One-third (232; 36%) of participants reported all three tests (nNO, biopsy, and genetics). Recently diagnosed people reported more tests [nNO odds ratio (OR) 2.2, 95% Confidence Interval (CI) 1.5-3.2; biopsy OR 3.2, 95%CI 2.1-4.9; genetics OR 4.7, 95%CI 3.2-6.9] and those with situs abnormalities fewer tests (nNO OR 0.5, 95%CI 0.4-0.7; biopsy OR 0.5, 95%CI 0.4-0.8; genetics OR 0.7, 95%CI 0.5-0.94). Our results indicate PCD diagnostic testing differed widely around the world and many patients received incomplete diagnostic work-up based only on clinical features or single tests. People diagnosed long ago and those with situs abnormalities possibly benefit from supplementary testing to refine their diagnosis as a prerequisite for personalized medicine.

Association of Incomplete Neurovascular Imaging After Emergency Department Encounters for Transient Ischemic Attack and Odds of Subsequent Stroke: A National Medicare Analysis.

BACKGROUND. Multisociety guidelines recommend urgent brain and neurovascular imaging for patients with transient ischemic attack (TIA), to identify and treat modifiable stroke risk factors. Prior research suggests that most patients with TIA who present to the emergency department (ED) do not receive prompt neurovascular imaging. OBJECTIVE. The purpose of this study was to evaluate the association between incomplete neurovascular imaging workup during ED encounters for TIA and the odds of subsequent stroke. METHODS. This retrospective study obtained data from the Medicare Standard Analytical Files for calendar years 2016 and 2017; these files contain 100% samples of claims for Medicare beneficiaries. Information was extracted using ICD 10th revision (ICD-10) and CPT codes. Those patients who were discharged from an ED encounter with a TIA diagnosis and who underwent brain CT or brain MRI during or within 2 days of the encounter were identified. Patients were considered to have complete neurovascular imaging if they underwent cross-sectional vascular imaging of both the brain (brain CTA or brain MRA) and neck (neck CTA, neck MRA, or carotid ultrasound) during or within 2 days of the encounter. The association between incomplete neurovascular imaging and a new stroke diagnosis within the subsequent 90 days was tested by multivariable logistic regression analysis. RESULTS. The sample included 111,417 patients (47,370 men, 64,047 women; 26.0% older than 84 years) who had TIA ED encounters. A total of 37.3% of patients (41,592) had an incomplete neurovascular imaging workup. A new stroke diagnosis within 90 days of the TIA ED encounter occurred in 4.4% (3040/69,825) of patients with complete neurovascular imaging versus 7.0% (2898/41,592) of patients with incomplete neurovascular imaging. Incomplete neurovascular imaging was associated with increased likelihood of stroke within 90 days (OR, 1.30 [95% CI, 1.23-1.38]) after adjustment for patient characteristics (age, sex, race and ethnicity, high-risk comorbidities, median county household income) and hospital characteristics (region, rurality, number of beds, major teaching hospital designation). CONCLUSION. TIA ED encounters with incomplete neurovascular imaging were associated with higher odds of subsequent stroke occurring within 90 days. CLINICAL IMPACT. Increased access to urgent neurovascular imaging for patients with TIA may represent a target that could facilitate detection and treatment of modifiable stroke risk factors.

Improving Safety in Living Liver Donation: Lessons From Intraoperative Adverse Events in 438 Donors Undergoing a Left Liver Resection.

Donor safety is paramount in living organ donation. Left liver resections are considered safer than right lobe hepatectomies. However, unexpected intraoperative adverse events (iAEs), defined as any deviation from the ideal intraoperative course, can also occur during left liver resections and may be life threatening or lead to postoperative complication or permanent harm to the donor and recipient. Records of 438 liver living donors (LDs) who underwent 393 left lateral sectionectomies (LLSs) and 45 left hepatectomies (LHs) between July 1993 and December 2018 in a pediatric living-donor liver transplantation center were reviewed for the appearance of iAEs that could have influenced the donor morbidity and mortality and that could have contributed to the improvement of the LD surgical protocol. Clinical characteristics of LLS and LH groups were comparable. Nine iAEs were identified, an incidence of 2%, all of them occurring in the LLS group. Seven of them were related to a surgical maneuver (5 associated with vascular management and 2 with the biliary tree approach). One iAE was associated with an incomplete donor workup and the last with drug administration. Each iAE resulted in subsequent changes in the surgical protocol. Donor outcome was at risk by 5 iAEs classed as type a, recipient outcome by 2 iAEs (type b) and both by 2 iAEs (type c). Postoperative complications occurred in 87 LDs (19.9%), with no differences between the LLS and LH groups (P = 0.227). No Clavien-Dindo class IVa or b complications or donor mortality (Clavien-Dindo class V) were observed. iAEs debriefings induced changes in our LD protocol and may have contributed to reduced morbidity and zero mortality. iAEs analysis can be used as a quality and safety improvement tool in the context of LD procedures, which may include right liver donation, laparoscopic, and robotic living liver graft procurement.

Prospective observational study of stroke in Cayenne, Tours and Besançon: The BECATOUR study

BackgroundStroke is a major public health issue. Its epidemiology is still poorly known in French Guiana. MethodWe conducted a prospective observational study including 100 consecutive patients hospitalized for stroke in Cayenne (in French Guiana), and Tours and Besançon (in metropolitan France). We compared their age, medical history, cardiovascular risk factors, pre-admission Rankin score, Glasgow and NIHSS scores, usual treatments, acute phase management, type of stroke, duration of hospitalization, mechanism of stroke according to TOAST classification, NIHSS and Rankin scores at discharge, discharge treatments, and mode of discharge. ResultsIn French Guiana, the average age of patients was 7years lower (62 y), patients were more frequently affected by hypertension (75%) and diabetes (31%). Lacunar strokes were overrepresented (16.1%), and infarctions of cardioembolic origin were underrepresented (12%). NIHSS entry and Glasgow scores were similar between French Guiana and mainland France. Acute management was different: thrombolysis rate (9.3%) was 3 to 4 times lower, thrombectomy was not available. Fewer patients were transferred to rehabilitation centers and more patients were transferred to home hospitalization. DiscussionIn Tours and Besançon, patients eligible for thrombectomy were overrepresented. This bias explains the overrepresentation of more severe infarctions and probably the overrepresentation of strokes of cardioembolic origin. Infarctions of undetermined origin were more numerous in French Guiana because patients were often discharged from hospital with an incomplete cardiological workup. ConclusionDespite some caveats, the profile of patients admitted for stroke in French Guiana is different from mainland France. The establishment of a stroke unit and an information campaign on the symptoms of stroke would allow better management.

Anecdotes Drive Attitudes, Data Drives Decisions: Optimizing the Emergency Department Workup Prior to Surgical Consultations

Emergency department (ED) wait times and ED length of stay (LOS) have a significant impact on patient morbidity and mortality and patient satisfaction. Consultation-to-decision time can contribute to increased wait times and LOS in the ED. Up to 40% of patients presenting to the ED require consultation from subspecialty services. We hypothesize that in surgical patients, completion of workup prior to consultation will decrease consultation-to-decision time, ED wait times, and LOS in the ED. A retrospective review was conducted at a single site including all overnight general surgery consultations from the ED over 2-months. Data collected included wait times, LOS, and workup completed prior to consultation. Summary statistics were calculated and bivariate tests were performed using t-tests for continuous variables. Time to final surgical plan and LOS in ED were evaluated for 137 patients comparing "complete" and "incomplete" workups at time of consultation. It was considered a "complete" workup if labs and imaging were resulted prior to time of consult. If any baseline tests were not ordered prior to time of consult, it was considered an "incomplete" workup. Analysis demonstrated an average time of 4.9 and 2.5 hours for consultation-to-decision time for "incomplete" and "complete" workups respectively (p < 0.0001). For LOS in ED, there was an average of 11.4 and 7.9 hours for "incomplete" and "complete" workups respectively (p < 0.0001). There is a significant difference in consultation-to-decision time and LOS in the ED when consultation is performed following a complete versus incomplete workup for surgical patients independent of inherent wait times for testing to result and the need for additional testing requested from consulting services. Developing strategies to optimize workups from the ED prior to surgical consultation, including the development of care pathways, could significantly decrease patient wait times and LOS in the ED.

The "Crossing Collection Sign": A Diagnostic Tool on Spine Magnetic Resonance Imaging For Localizing Cerebrospinal Fluid Leak.

The aim of the study is to determine whether the site of "cross" between ventral and dorsal spinal longitudinal extradural CSF collections (SLECs) seen on magnetic resonance imaging during initial workup of patients with suspected CSF leaks can predict the subsequently confirmed leakage site on computed tomography myelography or surgical repair. This was an institutional review board-approved, retrospective study performed from 2006 to 2021. Patients with SLECs who underwent total spine magnetic resonance imaging at our institution, followed by myelography and/or surgical repair for CSF leak, were included. Patients with incomplete workup including lack of computed tomography myelography and/or surgical repair and patients severely motion degraded imaging were excluded from our study. The site of cross between ventral and dorsal SLECs was defined as the "crossing collection sign" and was compared with the anatomically confirmed site of leak on myelography and/or at surgical repair. Thirthy-eight patients met inclusion criteria with 18 females and 11 males ranging in age from 27 to 60 years (median, 40 years; interquartile range, 14 years). The crossing collection sign was seen in 76% of patients (n = 29). The distributions of confirmed CSF leak were as follows: cervical (n = 9), thoracic (n = 17), and lumbar spine (n = 3). The crossing collection sign predicted the site of CSF leak in 14 of 29 patients (48%) and was within 3-vertebral segments in 26 of 29 cases (90%). The crossing collection sign can help prospectively identify spinal regions with highest likelihood for CSF leak in patients with SLECs. This can potentially help optimize the more invasive subsequent steps in the workup for these patients, including dynamic myelography and surgical exploration for repair.

The Rate of Avoidable Pancreatic Resections at a High-Volume Center: An Internal Quality Control and Critical Review.

The incidence of benign diseases among pancreatic resections for suspected malignancy still represents a relevant issue in the surgical practice. This study aims to identify the preoperative pitfalls that led to unnecessary surgeries at a single Austrian center over a twenty-year period. Patients undergoing surgery for suspected pancreatic/periampullary malignancy between 2000 and 2019 at the Linz Elisabethinen Hospital were included. The rate of "mismatches" between clinical suspicion and histology was considered as primary outcome. All cases that, despite that, fulfilled the indication criteria for surgery were defined as minor mismatches (MIN-M). Conversely, the true avoidable surgeries were identified as major mismatches (MAJ-M). Among the 320 included patients, 13 (4%) presented with benign lesions at definitive pathology. The rate of MAJ-M was 2.8% (n = 9), and the most frequent causes of misdiagnoses were autoimmune pancreatitis (n = 4) and intrapancreatic accessory spleen (n = 2). In all MAJ-M cases, various mistakes within the preoperative workup were detected: lack of multidisciplinary discussion (n = 7, 77.8%); inappropriate imaging (n = 4, 44.4%); lack of specific blood markers (n = 7, 77.8%). The morbidity and mortality rates for mismatches were 46.7% and 0. All avoidable surgeries were the result of an incomplete pre-operative workup. The adequate identification of the underlying pitfalls could lead to minimize and, potentially, overcome this phenomenon with a concrete optimization of the surgical-care process.

Impact of the COVID-19 Pandemic on Stroke Subtype Presentation in Patients Without COVID-19 Infection.

It is unknown if the COVID-19 pandemic and public health measures had an immediate impact on stroke subtypes and etiologies in patients not infected with COVID-19. We aimed to evaluate if the proportion of non-COVID-19-related stroke subtypes (ischemic vs. hemorrhagic) and etiologies (cardioembolic, atherosclerosis, small vessel disease, and others) during the pandemic's first wave were different from prepandemic. For this retrospective cohort study, we included patients without COVID-19 with ischemic or hemorrhagic stroke at two large Canadian stroke centers between March-May 2019 (prepandemic cohort) and March-May 2020 (pandemic cohort). Proportions of stroke subtypes and etiologies were compared between cohorts using chi-square tests. The prepandemic cohort consisted of 234 stroke patients and the pandemic cohort of 207 stroke patients. There were no major differences in baseline characteristics. The proportions of ischemic versus hemorrhagic stroke were similar (ischemic stroke: 77% prepandemic vs. 75% pandemic; hemorrhagic stroke:12% prepandemic vs. 14% pandemic; p > 0.05). There were no differences in etiologies, except for a decreased proportion of ischemic stroke due to atherosclerosis in the pandemic cohort (26% prepandemic vs. 15% pandemic; difference: 10.6%, 95%CI: 1.4-19.7; p = 0.03). Notably, during the pandemic, the cause of ischemic stroke was more often unknown because of incomplete work-up (13.3% prepandemic vs. 28.2% pandemic, difference: 14.9%, 95%-CI: 5.7-24.2; p = <0.01). In this study, the pandemic had no clear effect on stroke subtypes and etiologies suggesting a limited impact of the pandemic on stroke triggers. However, the shift from atherosclerosis toward other causes warrants further exploration.

Incidence and risk factors of unanticipated pathology in cases of hysterectomy for benign lesion a cross-section study in Al Shifa Medical Complex

ObjectiveTo measure the incidence of unanticipated gynecologic malignancies among women who underwent hysterectomy for benign indications. MethodsWe conducted a data analysis of hysterectomy cases from the medical files as well as from pathology reports in the pathology department in Al Shifa Medical Complex. Cases were abstracted from 1st January 2019 to 30th December 2020. Preoperative surgical indications included abnormal uterine bleeding (AUB), fibroid, endometrial malignancy, ovarian mass, prolapse, molar pregnancy, and adenomyosis. ResultsDuring the study period, 195 women underwent a hysterectomy. More than 50% were performed for fibroid and abnormal uterine bleeding (AUB). The incidence of unanticipated gynecologic malignancy among hysterectomies performed for benign indications was 3.06% (6 cases). Three of them underwent hysterectomy due to post-menopausal bleeding with no preoperative endometrial sampling. Main risk factor were age, anemia, previous medical disorder, lack of equipments, and insufficient preoperative investigations or risks assessments that we considered it an important factor for the development and concealment of pre-existing malignant growth which will lead to future complicated medical plan and management to control the situation. ConclusionUnanticipated pathology in this study was mainly due to incomplete preoperative assessment and workup including diagnostic imaging modalities and D&C biopsy. This workup should be done for all cases before hysterectomy, especially in old-age women with postmenopausal bleeding. Our study indicates that even in cases that are expected to be benign, nothing should be overlooked, and detailed preoperative evaluations should be performed.

Process, successes and challenges of building an inpatient preoperative evaluation team

BackgroundUrgent surgical cases have worse outcomes and are responsible for most case cancellations and delays. Improving preoperative care of urgent cases is cost saving and can potentially improve patient outcomes. We describe the design and implementation of a Rapid OR Decision Evaluation and Optimization (RODEO) service to assess patients requiring urgent surgery during their admission (“inpatients"). We hypothesized that the RODEO service will reduce Operating Room (OR) delays and cancellations. MethodsA multidisciplinary steering committee designed RODEO to be staffed by Advanced Practice Providers (APPs) with attending physician support. The attendings were available on the phone with the level of support changing as the APPs became more experienced. Initially the service focused on orthopedic trauma patients but expanded to other surgical specialties. RODEO assessment included evaluating chronic medical conditions, ordering testing and consults, medication management and communication with the patient care teams. Monthly meetings of the steering committee using standard data reports were used to identify areas for improvement. The primary outcome was the ratio of OR delays and cancellations due to incomplete workup to all OR delays and cancellations. ResultsBetween April 2020 and March 2021, 730 patients were assessed by the RODEO service. When RODEO needed to prioritize within the trauma patient population, the service focused on medically complex patients, (54% of patients had at least one chronic medical diagnosis), 20% of patients had respiratory disease, 19% cardiovascular disease, 18% diabetes, 16% renal disease, and 10% chronic pain. Optimization included ordering guidelines directed testing (48% of patients), managing chronic medications (46% of patients), requesting consults from other services (28% of patients), and placing orders (17% of patients). A significant portion of RODEO work involved multidisciplinary communication. We found that OR delays due to incomplete workup were reduced from 19% of total OR delays to 0%. Surgery cancellations due to incomplete workup were reduced from 50% of all cancellations to 0%. Expansion of RODEO services to other surgical specialties is achievable. DiscussionA service providing preoperative evaluation and optimization to surgical inpatients is feasible and may reduce delays and cancellation due to incomplete workup. Potential limitations to our findings are that RODEO was designed for a specific setting; and that the implementation coincided with the COVID-19 pandemic. Future research will need to assess the effect of RODEO on postoperative outcomes. ConclusionA specialized preoperative team optimizing surgical inpatients can reduce OR delays and cancellations

1241. Hepatitis C Cascade of Care in a Multidisciplinary Substance Use Bridge Clinic Model

Abstract Background Hepatitis C virus (HCV) infection is common among persons who inject drugs. Treating HCV in patients who present for treatment of substance use disorder (SUD) is an opportunity to improve linkage to and retention in care. The Vanderbilt University Medical Center (VUMC) Bridge Clinic serves a unique patient population that includes individuals with opioid use disorder who recently presented to VUMC for complications related to substance use. These patients are treated by a multidisciplinary team for addiction with opioid agonist therapy as well as comorbid medical conditions. The aim of this study is to further characterize the HCV cascade of care (CoC) in a bridge clinic setting and identify barriers to HCV treatment. Methods We performed a single-center, ambispective cohort study of patients enrolled in the VUMC Bridge Clinic from 7/1/20 through 6/30/21. Data collection was continued through 12/31/21. All patients enrolled in the Bridge Clinic were reviewed, and patients with active HCV infection were monitored from initial evaluation through treatment and sustained virologic response (measured at least 12 weeks after completing therapy (SVR12). Descriptive statistics including demographics and progression through the CoC are presented. Results Characteristics of the 230 patients screened for HCV are reflected in Table 1. The CoC is reflected in Figure 1. Of these 230 patients, 96 (42%) had detectable virus as measured by blood HCV RNA. Of these 96 patients, 39 (40%) were approved for treatment, 33 (34%) initiated treatment, 25 (26%) completed treatment, and 13 (14%) achieved SVR12 with laboratory confirmation. The largest number of patients who did not progress through the CoC were those not approved for treatment; the most common reasons were loss to follow-up or incomplete workup. The majority of patients received opioid agonist therapy as part of their multidisciplinary treatment plan. Conclusion This study demonstrates opportunities and challenges for treating HCV in individuals with SUD in a bridge clinic model. Ongoing efforts should focus on linkage to care and strategies to keep individuals with SUD engaged throughout HCV treatment. Disclosures David Marcovitz, MD, Better Life Partners LLC: Stocks/Bonds|Silver Pines LLC: Stocks/Bonds.

Abstract 12896: Case of Probable Takutsubo's Cardiomyopathy Post Intravenous Immunoglobulin Infusion for Neuromyopathy Syndrome

Introduction: Takotsubo’s Cardiomyopathy (TCM) is a diagnosis of exclusion recognized by regional left ventricle (LV) dysfunction and absent coronary artery disease. There are isolated reports of patients with autoimmune conditions developing TCM post intravenous immunoglobulin (IVIG). IVIG is a plasma product which inactivates microbial antigens and downregulates certain cytokines, but its cardiac effects are varied. Our case describes a female with progressive neuromyopathy who developed cardiomyopathy post IVIG infusion. Case: A 68 year old female, with type 2 diabetes, hypertension, stroke, and neuromyopathy presented with worsening dysarthria and gait issues for 2 years. Examination revealed multiple neurological deficits, and vital signs showed pulse of 105 with blood pressure of 101/75 mmHg. Initial electrocardiogram (EKG) showed sinus tachycardia and CT angiogram of head was unremarkable. She had a negative cardiac catheterization 2 years ago and a normal echocardiogram 6 months ago. IVIG 400 mg/kg daily for 5 days was started for neuromyopathy flare. She had chest pain on infusion day 4. EKG showed ST elevation in leads V2-V4, and labs revealed troponin I of 0.96 ng/ml with proBNP of 7583 pg/mL. Echo showed LV akinesis with preserved basal segmental function suggestive of TCM. Carvedilol and losartan were started. Further ischemic work up was not done as she died from respiratory failure. Discussion: IVIG is linked to thromboembolic events including strokes and myocardial infarction (MI), but TCM is rare. Risk factors include high dose therapy (&gt;1g/kg), coronary artery disease, prior MI, smoking, diabetes, hypertension, autoimmune conditions, or hyperviscosity states. Our patient had multiple risk factors for MI post infusion including age, gender, and comorbidities. Her assessment is limited by incomplete ischemic workup. IVIG may have negative cardiac effects secondary to vasoconstrictive cytokines, arterial spasm, or increased blood viscosity, but is confounded by other factors in this case. Conclusions: IVIG has poorly described cardiac effects including possible induction of TCM. Further trials monitoring cardiac outcomes post IVIG stratified by dosage and risk would improve patient selection and education.