A nurse is caring for a client with a ventricular pacemaker who is on ECG monitoring. The nurse understands that the pacemaker is functioning properly when which of the following appears on the monitor strip?
Pacemaker spikes before each QRS complex
Pacemaker spikes after each QRS complex
Pacemaker spikes before each P wave
Pacemaker spikes with each T wave
The Correct Answer is A
A. Pacemaker spikes before each QRS complex: This is the correct answer. In a client with a ventricular pacemaker, the pacemaker spikes should precede each QRS complex on the ECG strip. This indicates that the pacemaker is appropriately stimulating the ventricles to depolarize and initiate a heartbeat. The
presence of pacemaker spikes before each QRS complex signifies that the pacemaker is functioning properly and effectively pacing the ventricles.
B. Pacemaker spikes occurring after each QRS complex would suggest a malfunction or inappropriate timing of the pacemaker. In this scenario, the pacemaker would not be pacing the ventricles as intended. This would be an abnormal finding and would require further assessment and intervention.
C. Pacemaker spikes preceding each P wave would suggest pacing of the atria rather than the ventricles. This would indicate a different type of pacemaker (atrial pacemaker) or inappropriate pacing settings for a ventricular pacemaker. In either case, it would be considered abnormal for a ventricular pacemaker and would require evaluation and possibly reprogramming of the pacemaker.
D. Pacemaker spikes occurring with each T wave would be an abnormal finding and would suggest interference or oversensing by the pacemaker. This could lead to inappropriate pacing or dysrhythmias. It would require further investigation and correction to ensure proper pacemaker function.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is []
Explanation
In respiratory acidosis, there is an accumulation of carbon dioxide (CO2) in the blood due to inadequate ventilation, leading to an increase in the partial pressure of arterial carbon dioxide (PaCO2) and a decrease in pH.
This is often caused by conditions that impair ventilation, such as airway obstruction, respiratory muscle weakness, lung diseases (e.g., chronic obstructive pulmonary disease, pneumonia), or central nervous system depression (e.g., drug overdose, head injury).
Management of respiratory acidosis include bronchodilators, sodium bicarbonate, adequate ventilation, and treatment of underlying causes.
Correct Answer is C
Explanation
C. This allows for the patient's condition to be re-evaluated, ensuring that they receive the necessary care and attention before being transferred.
A. Benzodiazepines can cause sedation, cognitive impairment, and delirium, which may worsen the patient's condition. Canceling the transfer without addressing the underlying cause of confusion may delay appropriate management.
B. Restraints can increase agitation, anxiety, and risk of injury, and they do not address the underlying cause of confusion. Restraints should only be considered as a last resort if all other measures to ensure patient safety have been exhausted.
D. This option is not appropriate because transferring the patient without addressing the new-onset confusion could compromise patient safety. It's essential to identify and manage the underlying cause of confusion before transferring the patient to another unit.
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