The nurse is reviewing an electrocardiogram rhythm strip. The P waves and QRS complexes are regular. The PR interval is 0.16 seconds, and the QRS complexes measure 0.06 seconds. The overall heart rate is 64 beats/minute. Which would be a correct interpretation based on these characteristics?
Sinus bradycardia
Sinus arrhythmia
Sinus tachycardia
Normal sinus rhythm
The Correct Answer is D
A. Sinus bradycardia: Sinus bradycardia is characterized by a regular rhythm with a heart rate less than 60 beats per minute. In this case, the heart rate is 64 beats per minute, which falls within the normal range, not consistent with sinus bradycardia.
B. Sinus arrhythmia: Sinus arrhythmia typically presents as a variation in the R-R interval with respiration, often seen as an irregularity in the heart rate. The provided characteristics describe a regular rhythm, so sinus arrhythmia is not the correct interpretation.
C. Sinus tachycardia: Sinus tachycardia is characterized by a regular rhythm with a heart rate greater than 100 beats per minute. The heart rate in this case is 64 beats per minute, which is not indicative of sinus tachycardia.
D. Normal sinus rhythm: Normal sinus rhythm refers to a regular rhythm with a heart rate between 60 and 100 beats per minute, P waves preceding each QRS complex, a normal PR interval (0.12 to 0.20 seconds), and normal QRS complex duration (less than 0.12 seconds). The provided characteristics, including regular P waves, regular QRS complexes, a PR interval of 0.16 seconds, and a heart rate of 64 beats per minute, align with a normal sinus rhythm interpretation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Weigh yourself once a week:
This is an important part of heart failure management as weight gain can indicate fluid retention, a common symptom of heart failure. The nurse should instruct the client to weigh themselves at the same time of day, using the same scale, and wearing similar clothing each time. Any sudden weight gain should be reported to the healthcare provider promptly.
B. Drink 3 liters of fluid per day:
This option is not appropriate for most heart failure patients, especially those with fluid retention issues. Fluid intake should be monitored and restricted based on the individual's condition and healthcare provider's recommendations. Consuming too much fluid can exacerbate fluid retention and worsen heart failure symptoms.
C. Engage in exercise daily:
Exercise is generally recommended for heart failure patients, but the type, intensity, and frequency of exercise should be tailored to the individual's condition. The nurse should encourage the client to engage in regular physical activity as tolerated, following a structured exercise plan approved by their healthcare provider. Activities like walking, cycling, or water aerobics can be beneficial for heart health.
D. Restrict dietary potassium:
This option is not typically included in lifestyle modifications for heart failure unless the client has specific potassium-related issues or is taking medications that require potassium restriction. Potassium is an important electrolyte for heart function, and most heart failure patients are advised to consume a balanced diet with moderate potassium intake, unless otherwise directed by their healthcare provider.
Correct Answer is B
Explanation
A. Administer aspirin:
Aspirin is commonly given to patients suspected of having a heart attack because it helps to inhibit platelet aggregation and reduce the risk of further clot formation. However, the administration of aspirin typically follows the confirmation of a cardiac event through diagnostic tests like the ECG. Aspirin is not the initial priority compared to obtaining diagnostic data.
B. 12 Lead Electrocardiography (ECG):
This is the most critical and time-sensitive action because it helps to quickly assess the patient's cardiac status. A 12 Lead ECG can identify important findings such as ST-segment elevation or depression, which are indicative of acute myocardial infarction (heart attack) or other cardiac abnormalities. Early detection and intervention are crucial in improving outcomes for patients with suspected cardiac events.
C. Assess vital signs:
Vital signs, including blood pressure, heart rate, respiratory rate, and oxygen saturation, provide valuable information about the patient's overall condition and can help determine the severity of the cardiac event. While assessing vital signs is important, performing the ECG takes precedence due to its immediate relevance in diagnosing and managing a potential cardiac emergency.
D. Administer morphine:
Morphine may be indicated for pain relief in patients with acute coronary syndromes. However, its administration should be based on the patient's pain level, hemodynamic stability, and other factors assessed after obtaining the ECG and vital signs. Morphine administration is not the primary action within the first 10 minutes of the patient's arrival; it follows the initial assessment and diagnostic procedures.
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