Nokea
The standard policy on the cardiac unit states: 'Notify the health care provider for mean arterial pressure (MAP) less than 70 mm Hg.' Which of the following patients should the nurse report to the health care provider?
- A. Postoperative patient with a BP of 116/42
- B. Newly admitted patient with a BP of 122/60
- C. Patient with left ventricular failure who has a BP of 110/70
- D. Patient with a myocardial infarction who has a BP of 114/50
Correct Answer: A
Rationale: The mean arterial pressure (MAP) is calculated using the formula MAP = (diastolic BP + 1/3 pulse pressure). The MAP for the postoperative patient with a BP of 116/42 is 67. The MAP in the other three patients is higher than 70 mm Hg.
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Which of the following information obtained by the nurse who is admitting the patient for magnetic resonance imaging (MRI) will be most important to report to the health care provider before the MRI?
- A. The patient has an allergy to shellfish and iodine.
- B. The patient has a history of coronary artery disease.
- C. The patient has a permanent ventricular pacemaker in place.
- D. The patient took all the prescribed cardiac medications today.
Correct Answer: C
Rationale: MRI is contraindicated for patients with implanted metallic devices such as pacemakers as the magnets can alter the function of the device. The other information also will be reported to the health care provider but does not impact whether or not the patient can have an MRI.
To auscultate for S3 or S4 gallops in the mitral area, which of the following should the nurse implement?
- A. Use the bell of the stethoscope with the patient in the left lateral position.
- B. Use the bell of the stethoscope with the patient sitting and leaning forward.
- C. Use the diaphragm of the stethoscope with the patient in a reclining position.
- D. Use the diaphragm of the stethoscope with the patient lying flat on the left side.
Correct Answer: A
Rationale: Gallop rhythms generate low-pitched sounds and are most easily heard with the bell of the stethoscope. Sounds associated with the mitral valve are accentuated by turning the patient to the left side, which brings the heart closer to the chest wall. The diaphragm of the stethoscope is best to use for the higher pitched sounds such as S1 and S2.
The nurse is providing teaching to a patient being evaluated for rhythm disturbances with a Holter monitor. Which of the following information should the nurse include in the teaching plan?
- A. Exercise more than usual while the monitor is in place.
- B. Remove the electrodes when taking a shower or tub bath.
- C. Keep a diary of daily activities while the monitor is worn.
- D. Connect the recorder to a telephone transmitter once daily.
Correct Answer: C
Rationale: The patient is instructed to keep a diary describing daily activities while Holter monitoring is being accomplished to help correlate any rhythm disturbances with patient activities. Patients are taught that they should not take a shower or bath during Holter monitoring and that they should continue with their usual daily activities. The recorder stores the information about the patient's rhythm until the end of the testing, when it is removed and the data are analyzed.
The nurse is caring for a patient who is scheduled for a cardiac catheterization with coronary angiography. Which of the following information should the nurse provide to the patient before the test?
- A. Electrocardiographic (ECG) monitoring will be required for 24 hours after the test.
- B. It will be important to lie completely still during the procedure.
- C. A warm feeling may be noted when the contrast dye is injected.
- D. Monitored anaesthesia care will be provided during the procedure.
Correct Answer: C
Rationale: A sensation of warmth or flushing is common when the iodine-based contrast material is injected, which can be anxiety-producing unless it has been discussed with the patient. The patient may receive a sedative drug before the procedure, but monitored anaesthesia care is not used. ECG monitoring is used during the procedure to detect dysrhythmias, but there is not a risk for dysrhythmias after the procedure. The patient is not immobile during cardiac catheterization and may be asked to cough or take deep breaths.
The nurse is assessing a patient who has just arrived in the emergency department and notes a pulse deficit. Which of the following actions should the nurse anticipate for the patient?
- A. A 2-D echocardiogram
- B. A cardiac catheterization
- C. Hourly blood pressure checks
- D. Electrocardiogram monitoring
Correct Answer: D
Rationale: Pulse deficit is a difference between simultaneously obtained apical and radial pulses and indicates that there may be a cardiac dysrhythmia that would be detected with ECG monitoring. Frequent BP monitoring, cardiac catheterization, and echocardiograms are used for diagnosis of other cardiovascular disorders but would not be as helpful in determining the immediate reason for the pulse deficit.