The rate of serious adverse events in cohort 1 was 0.07 events per patient-day (95% confidence interval [CI], 0.06 to 0.08), and in cohort 2, the rate was 0.08 events per patient-day (95% CI, 0.06 to 0.09). The upper bounds of the 95% confidence intervals were both below the prospectively set criterion for success of 0.25.
The most common serious adverse events were major bleeding (in 42% of participants in cohort 1 and in 50% of those in cohort 2), infection (in 63% and 50%, respectively), stroke (in 29% and 29%), and hypertension (in 50% and 33%). More details regarding deaths and adverse neurologic outcomes, as well as a table of adverse events (Table S7 in the Supplementary Appendix), are provided in the Supplementary Appendix.
Forty-six pump changes occurred in cohorts 1 and 2 combined. Thrombus formation in the device was identified as the reason for 43 of these pump changes. Pump changes were required in three participants for whom no thrombus in the device was identified: one participant had multiple infarcts on computed tomography of the head, one had a neurologic event, and one had positive fungal blood cultures.
The rate of serious adverse events in cohort 1 was 0.07 events per patient-day (95% confidence interval [CI], 0.06 to 0.08), and in cohort 2, the rate was 0.08 events per patient-day (95% CI, 0.06 to 0.09). The upper bounds of the 95% confidence intervals were both below the prospectively set criterion for success of 0.25.The most common serious adverse events were major bleeding (in 42% of participants in cohort 1 and in 50% of those in cohort 2), infection (in 63% and 50%, respectively), stroke (in 29% and 29%), and hypertension (in 50% and 33%). More details regarding deaths and adverse neurologic outcomes, as well as a table of adverse events (Table S7 in the Supplementary Appendix), are provided in the Supplementary Appendix.Forty-six pump changes occurred in cohorts 1 and 2 combined. Thrombus formation in the device was identified as the reason for 43 of these pump changes. Pump changes were required in three participants for whom no thrombus in the device was identified: one participant had multiple infarcts on computed tomography of the head, one had a neurologic event, and one had positive fungal blood cultures.
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