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 bpmRhythm: RegularPresence of P waves: One P wave for every QRS complexPR interval: 0.20 secondsQRS complex duration: 0.10 seconds
Ventricular tachycardia
Sinus tachycardia
Sinus bradycardia
Normal sinus rhythm
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 A
Explanation
A) Shiny, hairless lower extremities: In advanced peripheral arterial disease (PAD), the skin on the lower extremities often appears shiny and hairless due to reduced blood flow. The lack of hair growth and the shiny appearance are indicative of ischemia and poor circulation, making this a common finding in clients with advanced PAD.
B) Warm lower extremities: This finding is not typical in advanced PAD. Due to compromised blood flow, the lower extremities are more likely to feel cool or cold to the touch rather than warm. Warm skin can indicate good blood flow, which is usually absent in cases of significant arterial disease.
C) Thin toenails: In advanced PAD, toenails may become thin and brittle due to insufficient blood supply, which can lead to impaired nail growth. This change is consistent with the overall effects of reduced circulation and is an expected finding in clients with advanced PAD.
D) Lower extremity bilateral pulse 3+: A 3+ pulse indicates a strong and bounding pulse, which is not typically present in advanced PAD. In fact, patients with PAD often exhibit diminished or absent pulses in the affected extremities due to poor arterial circulation. Therefore, this finding does not align with the expected assessment results for advanced PAD.
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.