Incidence Of Thromboembolism Research Articles

Tofacitinib Exposure Does Not Increase Postoperative Complications Among Patients With Ulcerative Colitis Undergoing Total Colectomy: A Retrospective Case-Control Study.

Ulcerative colitis, total colectomy and tofacitinib have all been associated with increased risk of venous thromboembolism. To determine if preoperative tofacitinib exposure increases venous thromboembolism or other postoperative complications among patients with ulcerative colitis undergoing subtotal colectomy, total colectomy or total proctocolectomy. Retrospective, case-control study at a single institution. A tertiary referral center. Adult patients with ulcerative colitis undergoing subtotal colectomy, total colectomy or total proctocolectomy after 2018 who were taking tofacitinib within 30 days of surgery (n = 56) were compared to age and sex-matched patients with ulcerative colitis undergoing the same surgeries but who were not exposed to tofacitinib (n = 56). The primary outcome was differences in the incidence of venous thromboembolism within 90 days of surgery based on tofacitinib exposure. Secondary outcomes were 90-day postoperative complications. Groups were well matched for age (non-tofacitinib: mean 35.2 years [SD 12.0], tofacitinib: 35.9 [SD 12.1], p = 0.36) and sex (41% female in each group, p = 1.00). Medical characteristics were similar between groups except for biologic medication exposure 30 days before surgery (non-tofacitinib: 66%, tofacitinib: 36%, p = 0.004). Surgical characteristics did not differ between groups. Most patients were discharged on extended venous thromboembolism prophylaxis (non-tofacitinib: 80% and tofacitinib: 77%). Adjusted for biologic exposure, there were no statistically significant differences in venous thromboembolism (non-tofacitinib exposed: 14%, tofacitinib-exposed: 4%, p = 0.09) or other postoperative outcomes. Retrospective, single institutional study. Among patients with ulcerative colitis undergoing total colectomy or proctocolectomy, exposure to tofacitinib was not associated with an increased risk of venous thromboembolism or other postoperative complications. See Video Abstract.

Risks of bleeding and thromboembolic events in patients undergoing colonoscopy on uninterrupted and interrupted anticoagulant therapy in real-world setting

BackgroundAlthough anticoagulants may potentially increase the risk of post-colonoscopy bleeding events, temporary discontinuation of medications could elevate the risk of thromboembolism (TE). There is a paucity of data regarding the incidence of bleeding and TE events in patients undergoing colonoscopy while on uninterrupted or interrupted anticoagulant therapy. Therefore, we aimed to ascertain the risks of post-colonoscopy TE and bleeding in patients with continuous or interrupted use of anticoagulant agents. MethodsThe electronic databases of PubMed, Embase, and the Cochrane library were comprehensively searched from inception to March 15, 2024. We identified studies reporting the incidence of bleeding and TE events in patients undergoing colonoscopy with uninterrupted or interrupted anticoagulant therapy. The pooled incidence rate of bleeding and TE events was estimated using a random-effects model. ResultsThis study included a total of 15 studies involving 63, 017 patients. Overall, the incidence of post-procedural bleeding for uninterrupted and interrupted direct oral anticoagulants (DOACs) was found to be 3.60 % (95 % CI: 1.60 %–5.60 %), and 0.90 % (95 % CI: 0.10 %–10.30 %), respectively. Subgroup analysis revealed that older age patients (≥65 years) had a significantly higher rate of bleeding with uninterrupted DOACs therapy compared to younger age patients (< 65 years) (7.20 % vs. 2.00 %). The highest rate of bleeding was observed in Asia (7.20 %, 95 % CI: 2.20 %–12.10 %). Similarly, the risk of bleeding was significantly increased among patients interrupting DOACs therapy in Asia compared to North America (1.40 % vs. 0.26 %). For patients on uninterrupted and interrupted warfarin, a higher rate of bleeding events was observed in older age patients than younger age patients (4.90 % vs. 0.80 %, and 2.20 % vs. 1.70 %, respectively). Uninterrupted warfarin showed a more significant risk of bleeding in Asia (4.20 %, 95%CI: 1.90 %–6.60 %) compared to North America (1.00 %, 95%CI: 0.50 %–1.50 %). Among those who did not interrupt DOACs therapy, the incidence of TE was the lowest (0.08 %, 95%CI: 0.04 %–0.11 %). ConclusionThis study provides a comprehensive assessment of bleeding and TE risks in patients undergoing colonoscopy while receiving uninterrupted or interrupted anticoagulant therapy in the real-world setting. The overall incidence of post-colonoscopy bleeding and TE events is relatively low. However, the uninterrupted DOACs and warfarin are associated with an elevated risk of bleeding, particularly among elderly patients and the Asian population.

Prevalence and incidence of venous thromboembolism in geriatric patients admitted to long-term care hospitals

The risk of venous thromboembolism (VTE) increases with age. However, the risk of VTE in the setting of long-term care hospitals is understudied. Our objective was to provide data on the prevalence and incidence of VTE in older adults admitted to long-term care hospitals. In this retrospective cohort study, we collected data about chronically ill and multimorbid patients aged 65 years and older from two long-term care hospitals. The primary endpoint of this study was the lifetime prevalence of VTE, and the secondary endpoint was VTE incidence during residency in long-term care hospitals. We analysed data from 1148 patients with a mean age of 84.1 ± 7.9 years, of whom 74.2% were women. The lifetime prevalence of VTE at baseline was 9.6% (95% CI 7.9–11.4). Cumulative incidence of VTE at 1, 2, and 3 years from baseline was estimated at 3.5% (95% CI 2.5–4.7), 4.2% (95% CI 3.1–5.5), and 5.4% (95% CI 4.1–7.0), respectively. Overall, the incidence rate of VTE in our study was 2.82 (95% CI 2.18–3.66) per 100 person-years. The study indicated a considerably high lifetime prevalence and incidence of VTE during residence in long-term care hospital settings, requiring further evaluation in larger prospective studies.

Web-Based Warfarin Management (Alfalfa App) Versus Traditional Warfarin Management: Multicenter Prospective Cohort Study.

Poor anticoagulation management of warfarin may lead to patient admission, prolonged hospital stays, and even death due to anticoagulation-related adverse events. Traditional non-web-based outpatient clinics struggle to provide ideal anticoagulation management services for patients, and there is a need to explore a safer, more effective, and more convenient mode of warfarin management. This study aimed to compare differences in the quality of anticoagulation management and clinical adverse events between a web-based management model (via a smartphone app) and the conventional non-web-based outpatient management model. This study is a prospective cohort research that includes multiple national centers. Patients meeting the nadir criteria were split into a web-based management group using the Alfalfa app or a non-web-based management group with traditional outpatient management, and they were then monitored for a 6-month follow-up period to collect coagulation test results and clinical events. The effectiveness and safety of the 2 management models were assessed by the following indicators: time in therapeutic range (TTR), bleeding events, thromboembolic events, all-cause mortality events, cumulative event rates, and the distribution of the international normalized ratio (INR). This national multicenter cohort study enrolled 522 patients between June 2019 and May 2021, with 519 (99%) patients reaching the follow-up end point, including 260 (50%) in the non-web-based management group and 259 (50%) in the web-based management group. There were no observable differences in baseline characteristics between the 2 patient groups. The web-based management group had a significantly higher TTR than the non-web-based management group (82.4% vs 71.6%, P<.001), and a higher proportion of patients received effective anticoagulation management (81.2% vs 63.5%, P<.001). The incidence of minor bleeding events in the non-web-based management group was significantly higher than that in the web-based management group (12.1% vs 6.6%, P=.048). Between the 2 groups, there was no statistically significant difference in the incidence of severe bleeding and thromboembolic and all-cause death events. In addition, compared with the non-web-based management group, the web-based management group had a lower proportion of INR in the extreme subtreatment range (17.6% vs 21.3%) and severe supertreatment range (0% vs 0.8%) and a higher proportion in the treatment range (50.4% vs 43.1%), with statistical significance. Compared with traditional non-web-based outpatient management, web-based management via the Alfalfa app may be more beneficial because it can enhance patient anticoagulation management quality, lower the frequency of small bleeding events, and improve INR distribution.

Usefulness of Elastic Bandage Compression Compared to Calf Massage to Prevent Venous Thromboembolism-A Retrospective Evaluation.

Background: Manual calf massage and passive ankle motion (CaM) can reduce the incidence of venous thromboembolism (VTE) after total hip arthroplasty (THA). However, these methods cannot be used in all patients; thus, elastic bandage (EB) compression is an alternative method. The efficacy of EB compression in preventing VTE has not yet been investigated; thus, this study aimed to compare the effects of EB compression and manual calf massage. Methods: Of the 363 patients who underwent unilateral primary THA at our hospital between 1 August 2018 and 31 October 2023, CaM without anticoagulation therapy was administered to 206 patients (CaM group) and 157 patients underwent EB without anticoagulation therapy (EB group). Duplex ultrasonography was performed 7 days postoperatively to check for deep vein thrombosis (DVT) in both legs. Results: The surgical time (122.2 min vs. 155.5 min), the incidence of DVT (4.5% vs. 4.8%) and pulmonary thromboembolism (PTE) (0% vs. 0.7%), intraoperative bleeding (305.4 mL vs. 301 mL), and estimated actual blood loss (846.6 mL vs. 811.6 mL) were not significantly different between the CaM and EB group. However, there was one case of symptomatic PTE in the EB group. Conclusions: The incidences of DVT, PTE, and intraoperative bleeding were not significantly different between the groups. Moreover, EB can be administered to patients with DVT and is considered to be a DVT prophylaxis method that can be used in a larger number of patients. Therefore, we recommend that EB be performed in all the patients undergoing THA.

Higher incidence of venous thromboembolism associated with increasing lines of treatment in heavily treated ovarian cancer patients

ObjectiveOvarian cancer is associated with a high rate of venous thromboembolism. Our objective is to report the incidence of venous thromboembolism in recurrent ovarian cancer, assess the impact on morbidity...

Evaluation of the impact of bundled nursing strategies on the prevention of venous thromboembolism in patients with cerebral hemorrhage.

To investigate the effectiveness and value of bundled nursing strategies for venous thromboembolism prevention in nonsurgical patients with cerebral hemorrhage, 200 patients who underwent treatment for cerebral hemorrhage in our hospital from January 2023 to July 2023 were chosen as the study subjects. Patients were divided into control group and experimental group according to different treatment methods. For patients in the control group, regular care was used, while for patients in the observation group, bundled care was used for intervention. This study used a venous thromboembolism risk factor assessment form to assess the probability of patients suffering from venous thromboembolism. It used the incidence of venous thromboembolism, disease cognition level, coagulation function, fibrinolysis, changes in blood routine, exercise ability, improvement in quality of life, and patient satisfaction with nursing mode as detection indicators to obtain the changes in various indicator values and patient satisfaction scores under different nursing interventions. Prior to nursing intervention, the significant statistical differences did not exist (P > .05) between the control group and the observation group in terms of general information, number of venous thromboembolism risk levels, degree of disease cognition, coagulation function, blood routine, exercise ability, quality of life, and fibrinolysis indicators. After a period of nursing intervention, the significant statistical difference existed (P < .05) between the control group and the observation group in terms of general information, number of venous thromboembolism risk levels, degree of disease cognition, coagulation function, blood routine, exercise ability, quality of life, and fibrinolysis indicators. In the patient satisfaction score, the satisfaction scores of male and female patients with general care were 0.865 and 0.878, respectively, and the satisfaction scores for bundled care were 0.942 and 0.965, respectively. In conclusion, bundled care can better improve the coagulation status and blood routine indexes of nonsurgical patients with cerebral hemorrhage compared with ordinary care, thus contributing to better prevention of venous thromboembolism in nonsurgical patients with cerebral hemorrhage.

Incidence and impact of venous thromboembolism in hospitalized patients with acute pancreatitis

BackgroundAcute pancreatitis (AP) and venous thromboembolism (VTE) remain common and potentially lethal disease entities. AP might be an important trigger of systemic inflammtion and may activate the coagulation system with increased VTE risk. MethodsThe German nationwide inpatient sample was screened for patients admitted due to AP (ICD-code K85) 2005–2019. AP hospitalizations were stratified for VTE as well as risk-factors and the impact of VTE on in-hospital case-fatality rate were investigated. ResultsOverall, 797,364 hospitalizations of patients due to AP (aged in median 56.0 [IQR 44.0–71.0] years), 39.2 % females) were detected in Germany 2005–2019. Incidence of VTE in hospitalized AP patients was 1764.8 per 100,000 hospitalizations (1.8 %) with highest VTE rate between 5th and 6th decade. Cancer (OR 1.656 [95 %CI 1.513–1.812], P < 0.001), any surgery (OR 4.063 [95 %CI 3.854–4.284], P < 0.001), and heart failure (OR 1.723 [95 %CI 1.619–1.833], P < 0.001) were independently associated with VTE occurrence. Case-fatality (8.8 % vs. 2.7 %, P < 0.001) was more than 3-fold higher in AP patients with than without VTE. VTE was associated with increased case-fatality in AP patients (OR 3.925 [95 %CI 3.684–4.181], P < 0.001). ConclusionsVTE is a life-threatening event in hospitalized AP patients associated with an almost 4-fold increased case-fatality rate. Cancer, any surgery, thrombophilia and heart failure were important risk factors for occurrence of VTE in AP.

Exploratory rivaroxaban trial for isolated calf deep vein thrombosis with a risk factor of thrombosis extension: an open-label, multicenter, randomized controlled trial

BackgroundLimited evidence exists regarding the incidence of recurrent venous thromboembolism (VTE) in patients diagnosed with isolated distal deep vein thrombosis (DVT) who are at risk of thrombosis extension whether they receive anticoagulation therapy or not. ObjectivesThe study aimed to investigate the incidence of recurrent VTE and the impact of rivaroxaban in this patient population. MethodsThis open-label, exploratory, and randomized controlled trial was conducted at 7 centers in Japan between April 2019 and April 2022. Adult patients with isolated distal DVT at risk of thrombosis extension received either rivaroxaban combined with physical therapy or physical therapy alone for 90 days. Whole-leg ultrasound was performed at 14 and 90 days. We assessed a composite outcome of symptomatic or asymptomatic proximal DVT or symptomatic pulmonary embolism as the primary outcome until the end of the treatment period using an intention-to-treat analysis. Major bleeding was evaluated as a key secondary outcome. ResultsOut of 90 enrolled patients, 3 were excluded due to withdrawal of consent; therefore, we analyzed 87 participants. The rivaroxaban group (n = 42) reported no primary outcomes (0%; 95% CI, 0.0%-8.4%), whereas the physical therapy group (n = 45) had 2 cases of symptomatic proximal DVT (4.4%; 95% CI, 0.5%-15.1%). Major bleeding events occurred in 4 patients in the rivaroxaban group (9.5%; 95% CI, 2.7%-22.6%), whereas no events occurred in the physical therapy group (0%; 95% CI, 0%-7.9%). ConclusionPreliminary data suggest that rivaroxaban may reduce the risk of VTE recurrence among this patient subset, albeit with an increased incidence of bleeding events.

Venous thromboembolism risk and its assessment in hospitalized patients

Abstract The annual incidence of symptomatic deep venous thrombosis (DVT) and venous thromboembolic (VTE) (DVT plus pulmonary embolism) in the adult population is estimated to be 50–100 and 75–150/100,000, respectively, and the incidence doubles for every 10-year increase in age. Patients admitted to hospitals, both surgical and medical, are at particularly increased risk for VTE, and the problem has been shown to continue after discharge. The risk is increased by age, obesity, malignancy, history of VTE, family history of DVT, stay in the intensive care unit, hereditary or acquired thrombophilia, and more recently, an elevated D-dimer. This risk is also affected by the nature and duration of the operation, type of anesthesia, immobility, dehydration, sepsis, varicose veins, inflammatory bowel disease, hormone replacement therapy, pregnancy, and pregnancy-related complications (stillborn infant, unplanned abortions, placental insufficiency, and growth retarded infant). Several risk assessment scoring systems are now available for clinical use. The ones most commonly used are the Rogers, Caprini, and Chao-Yang in surgical patients and the Padua, International Medical Prevention Registry on Venous Thromboembolism, and IMPROVEDD in acutely ill medical patients. The mandatory use of a risk assessment tool on admission and in high VTE risk patients at discharge as well and implementation of an evidence-based pathway for thromboprophylaxis have made the prevention of many fatal pulmonary emboli after surgery or hospitalization a reality.

Surgical Thromboprophylaxis in Patients With Head and Neck Cancer: An Economic Model.

To quantify postoperative venous thromboembolism (VTE) incidence in head and neck cancer (HNC) patients, and assess the economic implications of chemoprophylaxis. Retrospective cost-effective analysis. Fifty-threehealth care organizations. The TriNetX Research Network was queried to identify the 1-month VTE rate in HNC patients undergoing neck dissection from 2012 to 2022. A literature search provided additional postsurgical VTE rates in HNC patients. Costs of prophylactic heparin and enoxaparin were obtained from a drug wholesaler, and VTE-associated medical costs were sourced from the literature. A break-even analysis determined the absolute risk reduction (ARR) in the VTE rate necessary for a medication to break-even on cost. In TriNetX, 8193 HNC surgical patients underwent neck dissection, and an additional 1640 patients underwent neck dissection plus free flap reconstruction without chemoprophylaxis. Respective 1-month VTE rates were 1.3% (n = 103) and 2.5% (n = 41). Four additional studies of 1546 postoperative HNC patients not prescribed chemoprophylaxis reported a mean VTE rate of 3.8% (n = 59), ranging from 1.9% to 13.0%. At $8.40 per week, heparin resulted in cost savings if it decreased the VTE rate by an ARR of at least 0.05%, while enoxaparin, at $23.66 per week, needed to achieve a 0.14% ARR. Considering potential added costs from bleeding complications, heparin, and enoxaparin remained cost-effective if chemoprophylaxis did not increase bleeding complications by an absolute risk of more than 2.86% and 2.79%, respectively. Postoperative VTE rates varied in HNC patients. Despite this, achievable ARRs suggested the potential cost-effectiveness of routine chemoprophylaxis with heparin and enoxaparin.

Venous thromboembolism incidence and association with overall survival in pancreatic cancer: A Finnish nationwide cohort study.

Pancreatic cancer (PC) is associated with a high risk of venous thromboembolic events (VTEs). We investigated the incidence of VTE before and after the diagnosis of PC and its association with overall survival. We identified PC patients diagnosed in 2013-2016 from the Finnish Cancer Registry. Data on healthcare visits and death were collected, along with follow-up data through the end of 2020. We compared patients who underwent radical-intent surgery (RIS) to those who underwent palliative treatment (PT) alone. We identified 4086 PC patients, of whom 343 (8.4%) underwent RIS and 3743 (91.6%) received PT. VTE incidence within 1 year before a PC diagnosis was higher in the PT (4.2%, n = 156) than in the RIS group (0.6%, n = 2; p < 0.001). The cumulative incidence of VTE at 12 and 24 months after a PC diagnosis was 6% (n = 21) and 9% (n = 31), respectively, within the RIS group, and 8% (n = 286) and 8% (n = 304) within the PT group. In the PT group, a VTE within 1 year before a PC diagnosis was independently associated with a worse survival {hazard ratio, HR 1.9 [95% confidence interval (CI) 1.6-2.2]}. In both groups, VTE after a PC diagnosis was associated with a worse survival [RIS group: HR 2.6 (95%CI 1.8-3.7) vs. PT group: HR 2.2 (95%CI 1.9-2.4)]. A VTE within 1 year before a PC diagnosis more often occurred among PT PC patients than among patients who underwent RIS. VTE might serve as a diagnostic clue to detect PC at an earlier stage.

Positive predictive value and sensitivity of cancer-associated venous thromboembolism diagnoses in the Danish National Patient Register

IntroductionHospital discharge diagnoses from administrative registries are frequently used in studies of cancer-associated venous thromboembolism, but the validity of International Classification of Diseases (ICD) codes for identifying such events is unknown. Materials and methodsUsing patient samples from the Danish National Patient Register, we calculated positive predictive values (PPV), i.e., the proportion of registered ICD codes, which could be confirmed after manual search of the electronic health record. Sensitivity was estimated in a sample of patients with imaging-verified venous thromboembolism but without prior knowledge about their ICD coding status. Sensitivity was calculated as the proportion of these patients, who were discharged with an ICD code for venous thromboembolism. ResultsThe overall PPV of an ICD-10 diagnosis of cancer-associated venous thromboembolism was 75.9 % (95 % confidence interval 71.3–80.0). In subgroups, the PPV was particularly low for recurrent venous thromboembolism (44.2 %), diagnoses in a secondary position (55.7 %), outpatient diagnoses (65.3 %), and diagnoses given at surgical (66.7 %), emergency wards (48.4 %), or via hospices/palliative teams (0 %).The overall sensitivity was 68 %, meaning 32 % of patients with cancer diagnosed in hospital with venous thromboembolism were discharged without any registered ICD code for venous thromboembolism. ConclusionsThe positive predictive value of an ICD diagnosis of cancer-associated venous thromboembolism in the Danish Patient Register was overall adequate for research purposes, but with notable variation across subgroups. Sensitivity was limited, as 1/3 of patients with venous thromboembolism were discharged without any relevant ICD code. Cautious interpretation of incidence of cancer-associated venous thromboembolism based on administrative register-based data is warranted.

Development and validation of a multi-parameter nomogram for venous thromboembolism in gastric cancer patients: a retrospective analysis.

Gastric cancer (GC), one of the highest venous thromboembolism (VTE) incidence rates in cancer, contributes to considerable morbidity, mortality, and, prominently, extra cost. However, up to now, there is not a high-quality VTE model to steadily predict the risk for VTE in China. Consequently, setting up a prediction model to predict the VTE risk is imperative. Data from 3,092 patients from December 15, 2017, to December 31, 2022, were retrospectively analyzed. Multiple logistic regression analysis was performed to assess risk factors for GC, and a nomogram was constructed based on screened risk factors. A receiver operating curve (ROC) and calibration plot was created to evaluate the accuracy of the nomogram. The risk factors of suffering from VTE were older age (OR = 1.02, 95% CI [1.00-1.04]), Karnofsky Performance Status (KPS) ≥ 70 (OR = 0.45, 95% CI [0.25-0.83]), Blood transfusion (OR = 2.37, 95% CI [1.47-3.84]), advanced clinical stage (OR = 3.98, 95% CI [1.59-9.99]), central venous catheterization (CVC) (OR = 4.27, 95% CI [2.03-8.99]), operation (OR = 2.72, 95% CI [1.55-4.77]), fibrinogen degradation product (FDP) >5 µg/mL (OR = 1.92, 95% CI [1.13-3.25]), and D-dimer > 0.5 mg/L (OR = 2.50, 95% CI [1.19-5.28]). The area under the ROC curve (AUC) was 0.82 in the training set and 0.85 in the validation set. Our prediction model can accurately predict the risk of the appearance of VTE in gastric cancer patients and can be used as a robust and efficient tool for evaluating the possibility of VTE.

Incidence of venous thromboembolism and bleeding in patients with malignant central nervous system neoplasm: Systematic review and meta-analysis.

This systematic review and meta-analysis (PROSPERO CRD42023423949) were based on a standardized search of PubMed, Virtual Health Library and Cochrane (n = 1653) in July 2023. After duplicate removal, data screening and collection were conducted by independent reviewers. The combined rates and 95% confidence intervals for the incidence of VTE and bleeding were calculated using the random effects model with double arcsine transformation. Subgroup analyses were performed based on sex, age, income, and type of tumor. Heterogeneity was calculated using Cochran's Q test and I2 statistics. Egger's test and funnel graphs were used to assess publication bias. Only 36 studies were included, mainly retrospective cohorts (n = 30, 83.3%) from North America (n = 20). Most studies included were published in high-income countries. The sample size of studies varied between 34 and 21,384 adult patients, mostly based on gliomas (n = 30,045). For overall malignant primary CNS neoplasm, the pooled incidence was 13.68% (95%CI 9.79; 18.79) and 11.60% (95%CI 6.16; 18.41) for VTE and bleeding, respectively. The subgroup with elderly people aged 60 or over had the highest incidence of VTE (32.27% - 95%CI 14.40;53.31). The studies presented few biases, being mostly high quality. Despite some variability among the studies, we observed consistent results by performing sensitivity analysis, which highlight the robustness of our findings. Our study showed variability in the pooled incidence for both overall events and subgroup analyses. It was highlighted that individuals over 60 years old or diagnosed with GBM had a higher pooled incidence of VTE among those with overall CNS malignancies. It is important to note that the results of this meta-analysis refer mainly to studies carried out in high-income countries. This highlights the need for additional research in Latin America, and low- and middle-income countries.

Invasive Mechanical Ventilation and Risk of Hospital-Acquired Venous Thromboembolism.

This study sought to estimate the overall cumulative incidence and odds of Hospital-acquired venous thromboembolism (VTE) among critically ill children with and without exposure to invasive ventilation. In doing so, we also aimed to describe the temporal relationship between invasive ventilation and hospital-acquired VTE development. We performed a retrospective cohort study using Virtual Pediatric Systems (VPS) data from 142 North American pediatric ICUs among children < 18 y of age from January 1, 2016-December 31, 2022. After exclusion criteria were applied, cohorts were identified by presence of invasive ventilation exposure. The primary outcome was cumulative incidence of hospital-acquired VTE, defined as limb/neck deep venous thrombosis or pulmonary embolism. Multivariate logistic regression was used to determine whether invasive ventilation was an independent risk factor for hospital-acquired VTE development. Of 691,118 children studied, 86,922 (12.4%) underwent invasive ventilation. The cumulative incidence of hospital-acquired VTE for those who received invasive ventilation was 1.9% and 0.12% for those who did not (P < .001). The median time to hospital-acquired VTE after endotracheal intubation was 6 (interquartile range 3-14) d. In multivariate models, invasive ventilation exposure and duration were each independently associated with development of hospital-acquired VTE (adjusted odds ratio 1.64 [95% CI 1.42-1.86], P < .001; and adjusted odds ratio 1.03 [95% CI 1.02-1.03], P < .001, respectively). In this multi-center retrospective review from the VPS registry, invasive ventilation exposure and duration were independent risk factors for hospital-acquired VTE among critically ill children. Children undergoing invasive ventilation represent an important target population for risk-stratified thromboprophylaxis trials.

Inferior vena cava filter thromboprophylaxis in surgical cancer patients.

This study evaluated the utilization and outcomes of inferior vena cava (IVC) filters as thromboprophylaxis in cancer patients undergoing surgery. This single-center retrospective study analyzed baseline patient characteristics and clinical outcomes of surgical cancer patients who received perioperative prophylactic IVC filters. Primary clinical endpoints included venous thromboembolism (VTE) incidence and filter complications. A statistical correlative analysis was conducted to identify risk factors related to pulmonary embolism (PE), deep vein thrombosis (DVT), and filter thrombi, as well as advanced technique filter removal and mortality at 6 months. A total of 252 surgical oncology patients (median age, 59; female 51%) received IVC filters for the perioperative prevention of PE. Primary surgical sites included spine (n = 91, 36%), orthopedic extremity/joint (n = 49, 19%), genitourinary (n = 47, 19%), brain/cranial (n = 40, 16%), abdominal (n = 18, 7%), multisite (n = 4, 2%), and chest (n = 3, 1%). Moreover, 15% of patients experienced DVTs in the postplacement preretrieval period, while 2% (n = 6) of patients experienced definitive PEs. A total of 36% of IVC filters were ultimately retrieved, with an average filter dwell time of 7.4 months. Complications occurred in one retrieval. Prophylactic perioperative IVC filters in surgical cancer patients resulted in minimal complications while ultimately resulting in a low incidence of PE.

The Incidence and Outcomes of Venous Thromboembolisms in Patients Admitted with Different Gastrointestinal Malignancies

Introduction: Venous thromboembolism (VTE) is associated with significant morbidity and mortality in cancer patients. Our study compares the mortality in hospitalized VTE patients among the four most common gastrointestinal (GI) malignancies which include esophageal, gastric, pancreatic, and colorectal cancer. Methods: A retrospective study was conducted utilizing the Nationwide Inpatient Sample database (NIS) from 2016 to 2019. Patients with VTE were identified using ICD-10 codes from all primary discharge diagnoses. Only deep venous thrombosis (DVT) and pulmonary embolism (PE) were considered. Patients with VTE were further divided into groups: esophageal cancer, gastric cancer, pancreatic cancer, and colorectal cancer, and compared with patients who did not have these malignancies. The adjusted odds ratio (aOR) was calculated using multivariate regression analysis. Results: Among 999,559 patients discharged with a VTE diagnosis, 25,775 (2.6%) had one of the four GI malignancies. Among patients with one of the four included GI malignancy diagnosis, 18,816 (73%) patients had PE and 6,959 (27%) patients had DVT. The study shows that adults admitted to the hospitals for VTE have higher mortality when compared to patients who did not have GI malignancies, with esophageal cancer having the highest inpatient mortality with an aOR of 2.701; 95% confidence interval (CI) 1.989–3.669, p value <0.000. For the remaining GI cancers, gastric cancer had an aOR 1.576; CI: 1.094–2.269, p value 0.015, and pancreatic cancer had an aOR of 1.736; 95% CI: 1.445–2.085, p value <0.000. Patients with colorectal cancer had no significant increase in the odds of mortality with aOR of 1.213; 95% CI: 0.988–1.489, p value 0.066. Conclusions: This study demonstrates that VTE in hospitalized patients with esophageal cancer is associated with greater mortality compared to other GI malignancies.

Relationship between DTA Mutations and Thromboembolism in Patients with Myeloproliferative Neoplasms

To analyze the DTA (DNMT3A, TET2, ASXL1) mutations in patients with myeloproliferative neoplasms (MPN), and preliminarily explore their correlation with thromboembolism. Clinical characteristics of 62 patients diagnosed de novo MPN at Central Hospital Affiliated to Shandong First Medical University from September 2016 to September 2022 were retrospectively analyzed. Next-generation sequencing was used to detect 35 MPN-related genes, and the DTA mutations in MPN patients and their relationship with thromboembolic events were analyzed. 75.8% (47/62) of the patients presented pathogenic non-driver mutations, and the mean number of pathogenic non-driver mutations per patient was 1.08. Among them, the most frequently mutated non-driver genes were TET2 (38.7%, 24/62), DNMT3A (9.7%, 6/62) and ASXL1 (6.5%, 4/62). The presence of DTA gene mutations was 50% (31/62) in the total MPN patients, and mainly accompanied by driver mutations. The mutation rate of DTA in patients aged ≥60 years was significantly higher than that in patients <60 years old (P =0.039). The incidence of thromboembolism in patients with DTA mutation was 58.1% (18/31), which was significantly higher than that in patients without DTA mutation (19.4%, 6/31) (P =0.002). The TET2 gene mutation rate in MPN patients with thromboembolism was 66.7% (16/24), which was significantly higher than that in patients without thromboembolism (21.1%, 8/38) (P =0.00). Patients with MPN have a higher incidence of DTA mutations, which are mainly accompanied by driver gene mutations. The incidence of thromboembolism in MPN patients with DTA mutations is higher than that in patients without DTA mutations. Especially, the elderly (≥60 years) essential thrombocythemia(ET) and polycythemia vera(PV) patients with TET2 mutation should be vigilant for thromboembolic events.

Unveiling the impact: Exploring thrombotic outcomes in hospitalized patients with COVID-19—Comparing those with and without a cancer diagnosis.

e23318 Background: There is a shared hypercoagulable association of COVID-19 and cancer, noting an increased risk of thromboembolic events (TEE)in both conditions. The current study focuses on patients with concurrent COVID-19 and underlying cancer and compares incidence of TEE and related outcomes in this complex intersection of acute viral infection and oncological challenges. Methods: In this retrospective cohort study, we examined data from the Charleston Area Medical Center’s (CAMC) COVID-19 Registry, involving 5,479 adult, symptomatic, PCR-positive COVID-19 hospitalized patients (3/1/2020 to 1/20/2024). Demographics, co-morbidities, lab values, treatments, and outcomes were assessed. Propensity score matching (3:1) non-cancer patients vs those with an active cancer diagnosis was undertaken using sex and age. SAS 9.4 was utilized for the analysis. The groups were compared using Chi-square/Fisher’s Exact tests for categorical variables and t-tests for continuous variables and a logistic regression modelling to determine differences in key variables, the incidence of thromboembolic events and other outcomes. Results: After propensity matching, 1,623 non-cancer and 427 active cancer patients were included. The incidence of venous thromboembolism (VTE) was higher in the active cancer group (9.42% vs 4.2%, P &lt; 0.001) with no significant differences in acute stroke. Intensive care unit (ICU) admissions, mechanical or non-invasive ventilation requirement, and mortality were not different although more patients with cancer were discharged to hospice (11.8% vs 3.3%, P &lt; 0.001). However, mean D-dimer results in both groups were &gt; 2.5 mg/L, it was not performed consistently. The active cancer group had greater frequencies of abnormal ferritin levels (59.1% vs 49.1%, P=0.01), and elevated procalcitonin levels &gt; 0.05 ng/mL (72.9% vs 60.6%, p &lt; 0.001). Among key treatments, remdesivir was used more frequently in cancer patients (41.4% vs 35.7%, P &lt; 0.01). In addition to the cancer diagnosis (OR = 1.729 95% CI [1.1-2.8] P =0.02), LOS &gt; / = 7days was also a predictor of TEE (OR= 1.825 95% CI [1.1-2.9] P &lt; 0.01). Conclusions: Symptomatic VTE rates in our COVID-19 and active cancer cohort align with published studies. Diligence in evaluation of D-dimer, early detection of TEE and adherence to published guidelines in prophylaxis and treatment is recommended.