Percutaneous left ventricular assist support is associated with less pulmonary congestion and lower rate of pneumonia in patients with cardiogenic shock.

Open Heart · 2020 · PMC7607612 · PMID 33132209

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a numerical trendno p-value reported

While we observed a numerical trend in 90-day survival of patients with Impella support, our study was not powered to detect a mortality difference.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.