An adolescent is hospitalized for dehydration. an intravenous infusion of 1000 ml of 0.9% sodium chloride with 20 meq/l of potassium chloride is prescribed. hospital policy states that potassium should be mixed in a 500-ml bag of 0.9% sodium chloride. the potassium chloride label reads "2 meq/ml." how many milliliters of potassium chloride should the nurse add to the 500 ml-bag? record your answer as a whole number. ml

An 80-year-old woman comes to the urgent care clinic with dyspnoea on exertion. on physical examination, her blood pressure is 100/70, and her pulse is 75. she has no pulsus paradoxus. her jugular veins are distended, and she has distant heart sounds. in addition, she has extra third and fourth heart sounds. her liver is enlarged, and she has pedal oedema. she has occasional premature ventricular contractions on her electrocardiogram. a chest x-ray reveals clear lung fields with a dilated cardiac silhouette. her echocardiogram reveals ventricular walls with a "speckled pattern". which of the following is the most likely diagnosis? - alcoholic cardiomyopathy- amyloidosis- haemochromatosis- tuberculosis- viral myocarditis