Deep venous thrombosis in the medically ill

Area of Science:

• Internal Medicine
• Cardiology
• Pulmonary Medicine

Background:

• Venous thromboembolism (VTE) poses a significant risk to hospitalized medical patients, comparable to surgical patients.
• Pulmonary embolism (PE) accounts for a substantial portion of in-hospital deaths, particularly among non-surgical patients.
• Medical patients with conditions like heart failure, respiratory failure, infections, inflammatory diseases, and cancer are at high risk for VTE.

Purpose of the Study:

• To review the risk of VTE in hospitalized medical patients.
• To discuss current recommendations for thrombosis prophylaxis in medical patients.
• To highlight the underutilization of VTE prophylaxis in the general medical population.

Main Methods:

• Review of epidemiologic and autopsy data on VTE and PE.
• Analysis of consensus conference recommendations for thrombosis prophylaxis.
• Comparison of unfractionated heparin (UFH) and low-molecular-weight heparins (LMWHs) efficacy and safety.

Main Results:

• VTE risk in medical patients is comparable to surgical patients.
• 75% of in-hospital PE deaths occur in non-surgical patients.
• Both UFH and LMWHs are effective for prophylaxis in high-risk medical patients, with LMWHs offering greater safety.

Conclusions:

• Hospitalized medical patients, especially those with specific comorbidities, are at high risk for VTE.
• Thrombosis prophylaxis, particularly with LMWHs, is recommended for high-risk medical patients.
• Routine VTE prophylaxis remains underused in the general medical population, necessitating improved implementation.