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BackgroundDuring the past few years, there has been a surge in the use of ultrasound‐assisted catheter‐directed thrombolysis (UACDT) for submassive pulmonary embolism (SPE). However, few studies evaluated the feasibility of UACDT for SPE. PurposeTo evaluate the feasibility of UACDT in treating SPE.MethodsA comprehensive search of online databases was performed. Search terms UACDT in SPE were entered into PubMed, Embase, Scopus and the Cochrane Library to identify related articles published until October 2018. A quality assessment and data extraction were performed by two researchers. Meta‐analysis was performed using R statistical software.ResultsTwelve studies with 485 patients were included in this meta‐analysis. The pooled right ventricular/left ventricular ratio decrease and pulmonary artery systolic pressure drop after treatment was −0.34 (95% CI: −0.43, −0.25) and −15.05 (95% CI: −18.10, −12.00) mm Hg, respectively. The pooled major bleeding rate was 1.0% (95% CI: 0.0%, 3.0%), and the in‐hospital mortality was 0.0% (95% CI: 0.0%, 1.0%).ConclusionThis up to data meta‐analysis confirms that UACDT is a feasible treatment for SPE.

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