ATI LPN
Cardiovascular Questions Questions
Question 1 of 5
Which of the following factors have no effect on blood return?
Correct Answer: A
Rationale: GI motility affects digestion, not venous return, unlike the respiratory pump, muscle contraction, and gravity, which influence venous return.
Question 2 of 5
If the origin of the stimulus that causes atrial paroxysmal tachycardia is near the AV node, which of the following statements about P-wave in standard limb lead I is most accurate?
Correct Answer: C
Rationale: A stimulus near the AV node causes retrograde atrial activation, inverting the P-wave in lead I.
Question 3 of 5
The tendency for edema to occur will be increased by:
Correct Answer: B
Rationale: Arteriolar constriction raises capillary pressure, promoting edema.
Question 4 of 5
Which one of the following lipoproteins is involved in the pathogenesis of atherosclerosis?
Correct Answer: A
Rationale: LDL contributes to atherosclerosis by depositing cholesterol in arterial walls.
Question 5 of 5
A 7-year-old child has had abdominal pain and dark urine for 10 days. Physical examination shows purpuric skin lesions on the trunk and extremities. Urinalysis shows hematuria and proteinuria. Serologic test results are negative for P-ANCAs and C-ANCAs. A skin biopsy specimen shows necrotizing vasculitis of small dermal vessels. A renal biopsy specimen shows immune complex deposition in glomeruli, with some IgA-rich immune complexes. Which of the following is the most likely diagnosis?
Correct Answer: B
Rationale: Henoch-Schönlein purpura features IgA immune complexes, purpura, and glomerulonephritis.