A health care provider in a clinic finds a patient in a room, unresponsive and pale. Which sign should be used to identify the need to initiate cardiopulmonary resuscitation (CPR)? Evaluation of peripheral perfusion and level of consciousness Obtaining a history of previous myocardial infarction Determination of pulselessness or bradycardia Assessment of gasping breaths or not breathing Assessment of gasping breaths or not breathing An African-American patient who is being treated with a thiazide diuretic for chronic hypertension reports blurred vision and shortness of breath. The provider notes a blood pressure of 185/115. What is the recommended action for this patient? Increase the dose of the thiazide medication Add a beta blocker to the patient's regimen Admit to the hospital for evaluation and treatment Prescribe a calcium channel blocker Admit to the hospital for evaluation and treatment A patient reports sustained, irregular heart palpitations. What is the most likely cause of these symptoms? Atrial fibrillation Anemia Extrasystole Paroxysmal attacks Atrial fibrillation A patient has a cardiac murmur that peaks in midsystole and is best heard along the left sternal border. The provider determines that the murmur decreases in intensity when the patient changes from standing to squatting and increases in intensity with the Valsalva maneuver. Which cause will the provider suspect for this murmur? Aortic stenosis