A nurse is caring for a client in a cardiac unit. Using the five criteria for ECG analysis information, the nurse interprets the client's ECG as which of the following rhythm interpretations?

Heart Rate: 59 bpm

Rhythm: Regular

Presence of P waves: One P wave for every QRS complex

PR interval: 0.20 seconds

QRS complex duration: 0.10 seconds

Ventricular tachycardia

Sinus tachycardia

Sinus bradycardia

Normal sinus rhythm

Answer and Explanation

The Correct Answer is C

A) Ventricular tachycardia: Ventricular tachycardia is characterized by a rapid heart rate exceeding 100 bpm, typically arising from abnormal ventricular activity. In this case, the heart rate is 59 bpm, which does not support this interpretation. Additionally, ventricular tachycardia usually presents with wide QRS complexes and no discernible P waves, neither of which is true in this scenario.

B) Sinus tachycardia: Sinus tachycardia is defined by a heart rate exceeding 100 bpm originating from the sinoatrial (SA) node, with a regular rhythm and normal P waves. The heart rate of 59 bpm in this client is too low for a diagnosis of sinus tachycardia, making this option incorrect.

C) Sinus bradycardia: Sinus bradycardia occurs when the heart rate is less than 60 bpm, with a regular rhythm and a normal PR interval and QRS duration. The provided data shows a heart rate of 59 bpm, a regular rhythm, one P wave for every QRS complex, a PR interval of 0.20 seconds, and a QRS duration of 0.10 seconds, which aligns perfectly with the criteria for sinus bradycardia.

D) Normal sinus rhythm: Normal sinus rhythm typically presents with a heart rate of 60-100 bpm, a regular rhythm, and appropriate P waves for each QRS complex. Given the heart rate of 59 bpm, this does not meet the criteria for normal sinus rhythm, as it falls below the acceptable range.

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Correct Answer is C

Explanation

A) Increase of high-density lipoproteins: While higher levels of high-density lipoproteins (HDL) are generally associated with a lower risk of cardiovascular disease, enalapril is not primarily used to target lipid levels. Its main purpose is to manage blood pressure and reduce the risk of heart failure and renal complications, rather than specifically affecting HDL levels.

B) Decreased pain from intermittent claudication: Intermittent claudication is typically related to peripheral artery disease, which may not be directly improved by enalapril. While managing blood pressure can indirectly benefit circulation, enalapril is not indicated specifically for alleviating pain associated with claudication.

C) Decreased blood pressure: Enalapril is an ACE inhibitor used primarily to treat hypertension. A significant decrease in blood pressure is a direct therapeutic effect of the medication, indicating that it is effectively managing the client’s condition. Monitoring blood pressure helps assess the medication's efficacy in achieving the desired therapeutic outcome.

D) Decrease in low-density lipoproteins: Although reducing low-density lipoprotein (LDL) levels can benefit cardiovascular health, enalapril is not primarily prescribed for this purpose. Its effects on lipid levels are minimal compared to its role in lowering blood pressure and protecting renal function, making a decrease in LDL levels an irrelevant indicator of its therapeutic effect.

A. Vitamin A B. Alprazolam C. Vitamin K D. Furosemide

Correct Answer is C

Explanation

A) Vitamin A: While vitamin A can affect various bodily functions, it is not known to have a direct interaction with warfarin. Therefore, it is not considered incompatible with warfarin therapy.

B) Alprazolam: This medication, a benzodiazepine, is primarily used to treat anxiety and does not have a significant interaction with warfarin. Thus, it is not incompatible with warfarin therapy.

C) Vitamin K: This vitamin is a critical consideration when a client is on warfarin therapy. Warfarin works by inhibiting vitamin K-dependent clotting factors, so an increased intake of vitamin K can counteract the effects of warfarin, making this the correct answer. Clients on warfarin should maintain a consistent intake of vitamin K to prevent fluctuations in their INR levels.

D) Furosemide: This loop diuretic is used to manage conditions such as heart failure and edema. While it may affect electrolyte levels, it does not have a direct interaction that would render it incompatible with warfarin. It can be safely used alongside warfarin with appropriate monitoring.

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Naxlex Comprehensive Predictor Exams

A nurse is caring for a client who is taking enalapril (Vasotec). Which of the following outcomes indicates a therapeutic effect of the medication?

Correct Answer is C

Explanation

A nurse is reviewing the medication list for a client who has a new prescription for warfarin. The nurse should recognize which is incompatible with warfarin?

Correct Answer is C

Explanation

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