If you’re preparing for the United States Medical Licensing Examination® (USMLE®) Step 1 exam, you mightiness privation to cognize which questions are astir often missed by test-prep takers. Check retired this illustration from Kaplan Medical, and work an adept mentation of the answer. Also cheque out all posts successful this series.
This month’s stumper
This month’s stumper
The graph shows 2 sets of cardiovascular relation curves. The coagulated lines picture the cardiovascular show of a 60-year-old man, with constituent "N" indicating mean resting conditions. The 2 breached lines picture cardiovascular show successful the aforesaid antheral six months aft helium suffered a myocardial infarction. Auscultation of his thorax reveals mean rales bilaterally.
He takes regular walks arsenic recommended by his cardiologist, but helium tires easy and coughs excessively whenever helium attempts to locomotion rapidly. His resting cardiac output is present 4.5 L per minute.
Which of the pursuing is astir apt his close atrial unit astatine rest?
A. 0 mm Hg.
B. 1 mm Hg.
C. 4 mm Hg.
D. 7 mm Hg.
E. 9 mm Hg.
F. 11 mm Hg.
The close reply is D.
Kaplan Medical explains why
Kaplan Medical explains why
The patient's cardiovascular show astatine remainder is indicated by the 2 breached lines that intersect astatine a cardiac output of 4.5 L per infinitesimal and a close atrial unit (RAP) of 7 mm Hg.
Did you reply the test-prep question correctly? Login to larn much from Kaplan Medical astir the test-taking strategy down getting the close answer. That includes:
- Evaluating the objective vignette.
- Why different reply choices tin beryllium eliminated.
- Tips to remember.
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