Key result
In critically ill older adult patients, age ≥75 years was an independent risk factor for deep venous thrombosis (OR 2.091), along with analgesic/sedative/muscarinic drug use, D-dimer levels, and high Caprini risk scores.
Why the study?
Older adult ICU patients frequently have multiple comorbidities and elevated DVT risk compared with younger adults, motivating an analysis of risk factors in this population.
Observational (n=650)
Yes
Odds Ratio: 2.091 (95% CI 1.308–2.846)
p-value: p=0.001
Advanced age, elevated D-dimer, high Caprini score, and use of analgesic/sedative/muscarinic drugs are independent risk factors for DVT in critically ill older adults, while basic and physical prophylaxis are protective.
Prophylaxis was associated with lower DVT risk in older ICU patients; supports targeted prevention yet leaves open need for RCTs before practice change.
BACKGROUND: Older adult patients mainly suffer from multiple comorbidities and are at a higher risk of deep venous thrombosis (DVT) during their stay in the intensive care unit (ICU) than younger adult patients. This study aimed to analyze the risk factors for DVT in critically ill older adult patients. METHODS: This was a subgroup analysis of a prospective, multicenter, observational study of patients who were admitted to the ICU of 54 hospitals in Zhejiang Province from September 2019 to January 2020 (ChiCTR1900024956). Patients aged > 60 years old on ICU admission were included. The primary outcome was DVT during the ICU stay. The secondary outcomes were the 28- and 60-day survival rates, duration of stay in ICU, length of hospitalization, pulmonary embolism, incidence of bleeding events, and 60-day coagulopathy. RESULTS: A total of 650 patients were finally included. DVT occurred in 44 (2.3%) patients. The multivariable logistic regression analysis showed that age (≥75 vs 60-74 years old, odds ratio (OR) = 2.091, 95% confidence interval (CI): 1.308-2.846, P = 0.001), the use of analgesic/sedative/muscarinic drugs (OR = 2.451, 95%CI: 1.814-7.385, P = 0.011), D-dimer level (OR = 1.937, 95%CI: 1.511-3.063, P = 0.006), high Caprini risk score (OR = 2.862, 95%CI: 1.321-2.318, P = 0.039), basic prophylaxis (OR = 0.111, 95%CI: 0.029-0.430, P = 0.001), and physical prophylaxis (OR = 0.322, 95%CI: 0.109-0.954, P = 0.041) were independently associated with DVT. There were no significant differences in 28- and 60-day survival rates, duration of stay in ICU, total length of hospitalization, 60-day pulmonary embolism, and coagulation dysfunction between the two groups, while the DVT group had a higher incidence of bleeding events (2.6% vs. 8.9%, P < 0.001). CONCLUSION: In critically ill older adult patients, basic prophylaxis and physical prophylaxis were found as independent protective factors for DVT. Age (≥75 years old), the use of analgesic/sedative/muscarinic drugs, D-dimer level, and high Caprini risk score were noted as independent risk factors for DVT. TRIAL REGISTRATION: Chinese Clinical Trial Registry (ChiCTR1900024956).URL: http://www.chictr.org.cn/listbycreater.aspx .
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Li et al. (2022) conducted an observational in Deep venous thrombosis (n=650). Age ≥75 years vs. Age 60-74 years was evaluated on Deep venous thrombosis during ICU stay (OR 2.091, 95% CI 1.308-2.846, p=0.001). In critically ill older adult patients, age ≥75 years was an independent risk factor for deep venous thrombosis (OR 2.091), along with analgesic/sedative/muscarinic drug use, D-dimer levels, and high Caprini risk scores.
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