Effectiveness of systemic thrombolysis on clinical outcomes in high-risk pulmonary embolism patients with venoarterial extracorporeal membrane oxygenation: a nationwide inpatient database study.

"Declarations Ethics approval and consent to participateThis study was performed in accordance with the amended Declaration of Helsinki, and the Institutional Review Board of The University of Tokyo approved this study (approval number, 3501-(5); 19 May 2021). Consent for publicationThe review board waived the requirement for informed consent because of the anonymous nature of the data. No information describing individual patients, hospitals, or treating physicians was obtained. Competing interestsThe authors declare that they have no competing interests. Competing interests The authors declare that they have no competing interests."

"Funding This research was funded by grants from the Ministry of Health, Labour and Welfare, Japan, grant numbers 19AA2007 and H30-Policy-Designated-004, and the Ministry of Education, Culture, Sports, Science and Technology, Japan, Grant number 17H04141."