The nurse is preparing to assist the physician with a bone marrow biopsy. Which intervention is most important for the nurse to carry out before the procedure?

Drape the biopsy site.

Observe the patient for bleeding.

Explain the procedure to the patient's family.

Administer an analgesic to the patient.

Answer and Explanation

The Correct Answer is D

A.   While draping is essential for maintaining sterility, it's typically done right before the physician performs the biopsy, not as a primary pre-procedure step for the nurse.
B.   Monitoring for bleeding is important after the procedure, not necessarily beforehand.
C.   Although informing the family can be helpful, the patient's understanding and consent are the top priority. Pain management is crucial for patient comfort and cooperation during the procedure.
D.   Administering an analgesic helps reduce the patient's anxiety and discomfort during the bone marrow biopsy, which can be a painful procedure. This improves patient tolerance and allows the physician to perform the procedure more efficiently.

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Correct Answer is A

Explanation

A. The P wave on an ECG represents atrial depolarization, which occurs as the electrical impulse originates in the sinoatrial (SA) node and spreads through the atria, initiating atrial contraction.
B. Atrial repolarization typically occurs during the QRS complex and is not represented by the P wave. Atrial repolarization is masked by the larger QRS complex.
C. Ventricular depolarization is represented by the QRS complex on an ECG, as the electrical impulse spreads through the ventricles, leading to ventricular contraction.
D. Ventricular repolarization typically occurs during the T wave and is not represented by the P wave. Ventricular repolarization involves the recovery of ventricular muscle cells after contraction.

A. Rhythm: Irregularly irregular B. P waves: No identifiable P waves C. PR interval: Measurable D. Heart rate: Atrial rate not measurable E. QRS interval: <0.10 seconds

Correct Answer is ["A","B","D"]

Explanation

A. Irregularly irregular: Atrial fibrillation is characterized by an irregularly irregular rhythm.
B. No identifiable P waves: P waves are typically absent in atrial fibrillation or may be difficult to identify.
C. PR interval is not typically measured in atrial fibrillation as it is not relevant to the rhythm.
D. Atrial rate not measurable: The atrial rate in atrial fibrillation is not measurable due to the rapid and irregular nature of the rhythm.
E. QRS interval is typically normal in atrial fibrillation and does not exceed 0.10 seconds.

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The nurse is preparing to assist the physician with a bone marrow biopsy. Which intervention is most important for the nurse to carry out before the procedure?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Correct Answer is A

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Correct Answer is ["A","B","D"]

Explanation

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