Any aortic outflow obstruction (e.g., the narrowing of the artery due to hypertrophic cardiomyopathy) can lead to the development of ____.

Upon delivery of a baby's head, you see that the umbilical cord is wrapped around its neck. You should manage this situation initially by

A. clamping and cutting the umbilical cord B. gently pulling on the cord to facilitate removal C. trying to remove the cord from around the neck. D. keeping the cord moist and providing rapid transport

If you can't identify an R wave on the ECG tracing, which of the following wave(s) can you use to determine the regularity of the ventricles?

A. P and R wave junction B. Q and S wave junction C. T wave D. P wave