Steve used a spirometer to analyze his respiratory capacities. He found the following results: a) after normal inspiration, a normal expiration was 500 ml
b) following a normal expiration, he was able to expel an additional 1000 ml
c) taking as deep a breath as possible, then forcefully exhaling all the air possible, he yielded an output of 4500 ml.

On the outcome of these measurements, what is Steve’s inspiratory reserve?

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