ATI LPN
Cardiovascular MCQ Questions Questions
Question 1 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 2 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 3 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.
Question 4 of 5
First-degree heart block is characterized by
Correct Answer: A
Rationale: First-degree block is generally identified by a prolonged PR interval (more than 0.20 second) on ECG. P waves are not absent in first-degree heart block. A widened QRS complex is associated with a particular dysrhythmia, but not first-degree heart block. A variable PR interval is found in type I second-degree block.
Question 5 of 5
A patient's ECG lacks recognizable waveforms and is deemed to be in sinus arrest. The patient's sinus arrest may be a result of
Correct Answer: A
Rationale: Sinus arrest may result from MI, electrical shock, electrolyte disturbances, acidosis, and extreme parasympathetic activity.