The nurse is attempting to determine the ventricular rate and rhythm of a patient's telemetry strip. What should the nurse examine to determine this part of the analysis?
RR Interval
QT interval
PP interval
PR interval
The Correct Answer is A
A. RR Interval:
The RR interval is the time between two consecutive R waves on an electrocardiogram (ECG) strip. It is primarily used to determine the ventricular rate and rhythm of the heart. A regular RR interval suggests a regular heart rhythm, while irregular intervals may indicate arrhythmias or other cardiac abnormalities. Calculating the RR interval can help determine the heart rate (ventricular rate) by dividing 60 seconds by the RR interval in seconds (e.g., if the RR interval is 0.8 seconds, the heart rate would be approximately 75 beats per minute).
B. QT Interval:
The QT interval represents the time from the start of the Q wave to the end of the T wave on an ECG. It reflects the time it takes for the ventricles to depolarize and repolarize. Prolongation or shortening of the QT interval can indicate certain cardiac conditions or medication effects, including an increased risk of arrhythmias such as torsades de pointes. However, it is not directly used to determine ventricular rate and rhythm as the RR interval is.
C. PP Interval:
The PP interval is the time between two consecutive P waves on an ECG strip. It is primarily used to assess the atrial rate and rhythm. Regular PP intervals indicate a regular atrial rhythm, while irregular intervals may suggest atrial arrhythmias such as atrial fibrillation or atrial flutter. The PP interval is not directly used to determine ventricular rate and rhythm.
D. PR Interval:
The PR interval is the time from the start of the P wave to the start of the QRS complex on an ECG strip. It represents the time it takes for the electrical impulse to travel from the atria to the ventricles. A normal PR interval is typically between 0.12 to 0.20 seconds. Prolongation or shortening of the PR interval can indicate certain cardiac conduction abnormalities.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. "If I take my blood pressure and it is normal, I don't have to take my blood pressure pills": This statement reflects a misunderstanding of hypertension management. Blood pressure medications are typically prescribed to help control blood pressure over the long term, regardless of individual blood pressure readings. Stopping medication without consulting a healthcare provider can be dangerous and is not recommended.
B. "When getting up from bed, I will sit for a short period before standing up": This statement demonstrates an understanding of orthostatic hypotension prevention, which is important for clients with hypertension and can be a side effect of certain medications.
C. "I will consult a dietician to help get my weight under control": This statement indicates the client's awareness of the importance of weight management in hypertension control and is a positive step toward healthy lifestyle changes.
D. "I think I'm going to sign up for a yoga class twice a week to help reduce my stress": This statement shows the client's proactive approach to stress reduction, which is beneficial for hypertension management as stress can contribute to elevated blood pressure.
Correct Answer is D
Explanation
A. Remove the client's IV access:
Removing the client's IV access is not the most appropriate initial action when a client experiences difficulty breathing and severe chest tightness during a transfusion. While it's important to discontinue the infusion, the immediate priority is to stop the transfusion itself to prevent further reaction and assess the client's condition.
B. Assess the client's chest sounds and vital signs:
This choice is the correct answer. After stopping the transfusion, the nurse should assess the client's respiratory status by listening to chest sounds for any wheezing or crackles, as well as checking vital signs such as oxygen saturation, respiratory rate, blood pressure, and heart rate. These assessments help evaluate the severity of the reaction and guide further interventions.
C. Notify the client's healthcare provider:
Notifying the healthcare provider is an essential step, but it typically follows the immediate action of stopping the transfusion and assessing the client's condition. The healthcare provider needs to be informed promptly about the client's condition, transfusion reaction, and the actions taken for further guidance and orders.
D. Stop the transfusion immediately:
This is the initial and most critical action when a client experiences signs of a transfusion reaction such as difficulty breathing and severe chest tightness. Stopping the transfusion promptly helps prevent the reaction from worsening and allows for immediate assessment and intervention to ensure client safety.
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