ATI LPN
Cardiovascular MCQ Questions Questions
Question 1 of 5
Which is the correct order of importance in reducing myocardial oxygen consumption?
Correct Answer: D
Rationale: Myocardial oxygen consumption is primarily influenced by heart rate, followed by blood pressure and left ventricular (LV) volume, as these factors directly affect the workload and oxygen demand of the heart.
Question 2 of 5
The biology of tumor growth most commonly follows which of the following mechanisms?
Correct Answer: C
Rationale: Tumor growth typically follows Gompertzian kinetics where growth rate slows as the tumor size increases.
Question 3 of 5
A pleasant 58 y.o male, diabetic for at least the last 10 years, is brought to the emergency room by his wife because of her concern over foul smelling drainage and discoloration from a long standing callus on his foot. He is noted to have a low grade fever, with a WBC of 13,000. You decide to order antibiotics. Which empiric option would make the most sense?
Correct Answer: D
Rationale: Piperacillin/tazobactam [Zosyn ®] provides broad coverage including Pseudomonas, which is important in diabetic foot infections.
Question 4 of 5
Which of the following statements is true regarding fluid management in AKI?
Correct Answer: D
Rationale: Both Ringer's lactate and normal saline have similar outcomes in AKI fluid management, as studies show no significant difference in mortality or renal recovery.
Question 5 of 5
A 45-year-old woman presents with a chief complaint of fatigue. Her BMI is 27, and her sleep experience includes frequent loud snoring and witnessed apneas. A polysomnography is performed and reveals an apnea hypopnea index of 11 (normal less than 5). Patient is started on continuous positive airway pressure (CPAP) therapy, as well as dietary modification and recommended an exercise program. At follow-up visit patient reports compliance with CPAP therapy and improved energy. She has also lost 6 kg because of lifestyle modifications. Her BMI is now 24. Which of the following management strategies would be most appropriate for this patient?
Correct Answer: B
Rationale: Weight loss and lifestyle changes may reduce OSA severity, but the current AHI and optimal CPAP settings need reassessment. A repeat polysomnography with CPAP titration is the most appropriate step to ensure therapy aligns with her current condition, per sleep medicine guidelines.