Thrombolytic Therapy Does Not Improve Long-Term Mortality Rates in Intermediate-Risk PE

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 Thrombolytic therapy did not affect long-term mortality rates or reduce right ventricular dysfunction in patients after intermediate-risk pulmonary embolism.
Thrombolytic therapy did not affect long-term mortality rates or reduce right ventricular dysfunction in patients after intermediate-risk pulmonary embolism.

HealthDay News - Among patients with intermediate- to high-risk pulmonary embolism (PE), thrombolytic treatment with tenecteplase does not affect long-term mortality rates or rates of other complications, according to a study published in the Journal of the American College of Cardiology.

Stavros V. Konstantinides, MD, PhD, from the University Medical Center in Mainz, Germany, and colleagues conducted a multisite randomized controlled trial in an effort to compare thrombolysis with tenecteplase (359 patients) vs placebo (350 patients) in normotensive patients with acute PE, right ventricular (RV) dysfunction on imaging, and a positive cardiac troponin test result.

Both groups received standard anticoagulation.

The researchers found that overall mortality rates were 20.3% in the thrombolysis arm and 18.0% in the placebo arm (P = .43). At long-term follow-up examination of survivors (median 37.8 months), persistent dyspnea (mostly mild) or functional limitation was reported by 36.0% in the thrombolysis group versus 30.1%of the placebo group (P = .23). 

Among those receiving echocardiography, no significant differences in residual pulmonary hypertension or RV dysfunction were seen. Chronic thromboembolic pulmonary hypertension was diagnosed in four thrombolysis patients versus six placebo patients (P = 0.79).

"An expectant strategy of anticoagulation, early monitoring, and rescue reperfusion in cases of hemodynamic decompensation is the preferable initial approach to patients with intermediate-risk PE," the authors write.

Several authors disclosed financial ties to pharmaceutical companies, including Boehringer Ingelheim, which funded the study.

Reference

Konstantinides SV, Vicaut E, Danays T, et al. Impact of thrombolytic therapy on the long-term outcome of intermediate-risk pulmonary embolism. J Am Coll Cardiol. 2017;69(12):1536-1544.

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