What was the cause of death among neonates treated with an oxygenator constructed of dimethylpolysiloxane used in a 1963 ECLS trial?
A. pulmonary embolism?B. intraventricular hemorrhage
C. infant respiratory distress syndrome
D. bronchopulmonary dysplasia
ANS: B
A. Incorrect response: See explanation B.
B. Correct response: An oxygenator constructed of a membrane composed of dimethylpolysiloxane, similar to the one currently in common use, was developed in 1963. Several neonates were supported with ECLS, but all died of intraventricular hemorrhage.
C. Incorrect response: See explanation B.
D. Incorrect response: See explanation B.
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Prevalence is:
a. The number of new cases occurring during a specified period divided by the total population b. The total number of cases at a specific point in time divided by the specified population c. The number of new cases occurring during a specified period divided by the population at risk d. The total number of cases at a specific point in time divided by the population at risk