In clinical practice, time is a decisive factor, the optimal use of which directly reflects on patient survival rates. In the case of pulmonary embolism (PE), the speed of intervention determines both the treatment outcome and the patient’s subsequent quality of life.
Pulmonary embolism ranks third in mortality among cardiovascular pathologies. The acute form of the disease often leads to shock, arrhythmia, pulmonary hypertension, and irreversible damage to the right ventricle. While standard anticoagulant therapy (blood thinners) is sufficient for managing relatively mild cases, rapid reperfusion (restoration of blood flow) is vital for high-risk patients.
As part of a systematic review and meta-analysis, scientists compared the outcomes of early and late catheter-directed intervention (CDI). CDI is a minimally invasive procedure in which a catheter is inserted into a blood vessel to perform mechanical thrombectomy (clot fragmentation) or infusion of a fibrinolytic agent.
The study relies on data from six large-scale works in the United States and integrates the clinical histories of 53,472 patients. Experts meticulously evaluated critical indicators such as mortality, rehospitalization frequency, hemorrhagic complications, length of hospital stay, and pulmonary arterial pressure dynamics.
Data analysis confirmed that early intervention (within the first 12–48 hours) significantly increases the chance of survival without increasing the risk of bleeding. This discovery is particularly important against the backdrop of an aging population, where the incidence of PE is steadily rising. In clinical practice, this approach establishes the principle that “time is myocardium”—aiming for the maximal preservation of right ventricular function.
The study was conducted in compliance with PRISMA and Cochrane standards. Four experts independently processed leading databases (PubMed, Embase, Scopus, Web of Science), selecting 6 retrospective works (2018–2025) from 153 identified articles. The time threshold for early intervention in the considered studies ranged from 12 to 48 hours.
Research Outcomes
Mortality: Early intervention reduced the probability of mortality by 35% overall; the most notable effect, a 39% reduction, was recorded during procedures performed within the first 24 hours.
Rehospitalization: The risk of readmission decreased by 21%.
Hospital Stay: The duration of hospitalization was reduced by an average of 2.36 days.
Safety: From a safety perspective, no increase in the risk of bleeding was observed, indicating the high reliability of the procedure.
These positive indicators are directly linked to the pathophysiological mechanisms of PE. Rapid removal of the thrombus relieves the load on the right ventricle, preventing its collapse and complications such as chronic hypertension. Additionally, reducing the length of hospitalization significantly lowers the risk of nosocomial (hospital-acquired) infections and treatment costs.
Despite certain limitations (the retrospective nature of the studies and the primary focus on U.S. clinical practice), based on currently available evidence, the optimal interval for intervention in the management of high-risk PE encompasses the first 24 hours.
Source: Pulmonary Circulation
