Background: Mortality rates due to massive pulmonary embolism (PE) are much higher than
estimated. Although thrombolytic therapy is controversial, it can be a life-saving procedure
and can be safely used in patients with massive PE. Study aim: We aimed to share the results of
thrombolytic treatment in patients with massive PE. Material and methods: We retrospectively
evaluated 72 patients with PE admitted between January 2010 and April 2018 to the Department
of Pulmonary Medicine, VM Medicalpark Samsun Hospital, Samsun, Turkey. The data of patients
who received thrombolytic treatment were retrospectively analyzed. Results: The female to male
ratio was 24/48, with a mean age of 62.7 ± 12.6 (minimum 27, maximum 88) years. The diagnosis
of massive PE was established with echocardiography in all patients and was confirmed via pulmonary CT angiography in 45 patients (62.5%) who presented an appropriate clinical status for
this imaging technique. The most common symptoms were dyspnea (90.3%), chest pain (83.3%),
and syncope (40.2%). The S1Q3T3 electrocardiography pattern was noted in 82% of patients, who
rapidly recovered after thrombolytic therapy. Cardiopulmonary arrest was seen in 25 patients
(37.2%), and thrombolytic treatment was administered during cardiopulmonary resuscitation in
18% (n = 13) of patients. The survival rate was 30.7% (n = 4) in patients with cardiopulmonary
arrest who received thrombolytic treatment in the emergency room. The complications of rt-PA
treatment included minor hemorrhages in 6.4% (n = 5), major hemorrhages in 2.7% (n = 2), and
allergic reactions in 1.3% (n = 1) of patients. None of the patients had deceased as a complication
of thrombolytic treatment. The overall mortality rate was 26.2% (n = 19), and 12.5% (n = 9) of the
patients have died in first 24 hours after thrombolysis. Conclusions: We concluded that the risk
factors, ECG, and echocardiography are key indicators for the suspicion of massive PE in patients
with hemodynamic shock. Based on our experience, early thrombolytic therapy is a life-saving
intervention in patients with diagnosed and/or suspected massive PE.