PCCN Master Questions With A Graded Answers 2024.docx

PCCN Master Questions With A Graded Answers 2024 _________ is the amount of pressure the left ventricle must work against to pump blood into the circulation. Correct Answer Afterload; The greater this resistance, the more the heart works to pump out blood. ____________is the stretching of muscle fibers in the ventricles and is determined by the pressure and amount of blood remaining in the left ventricle at the end of diastole. Correct Answer Preload This stretching results from blood volume in the ventricles at end-diastole. According to Starling's Law, the more the heart muscles stretch during diastole, the more forcefully they contract during diastole. 15 little blocks = __ seconds Correct Answer 3 A common cause of restrictive cardiomyopathy is? Correct Answer Glycogen storage disease and Amyloidosis. The myocardium, especially the left ventricle, becomes rigid from fibrosis, which results in inadequate left ventricular filling and increased atrial dilation. Left ventricular diastolic dysfunction occurs, but systolic function remains normal in this type of cafrdiomyopathy. Fluid backs up into the lungs and the patients looks as if he has CHF. There is no cure for restrictive cardiomyopathy; instead symptoms are treated as they occur. A definitive diagnosis of myocarditis can be made via? Correct Answer ENDOMYOCARDIAL BIOPSY A biopsy is the ONLY definitive way to diagnose myocarditis. A diastolic murmur will occur as a result of regurgitant blood flow over which of the following valves? Correct Answer Pulmonic and aortic During ventricular diastole, both the aortic and pulmonic valves close. If a valve is incompetent, the blood will flow backwards through the valve, creating turbulent blood flow-- that is, a murmur.