The clinical significance for a client who is having premature ventricular contractions (PVC) is that they: Select all that apply
1. Indicate myocardial ischemia and injury.
2. Could become the dominant pacemaker.
3. Are a life-threatening cardiac rhythm.
4. Are not significant; PVCs are not dangerous.
5. Show that the rhythm is regular.
1. Indicate myocardial ischemia and injury.
2. Could become the dominant pacemaker.
3. Are a life-threatening cardiac rhythm.
Rationale: Indicate myocardial ischemia and injury. When the cardiac muscle does not receive adequate blood supply, the muscle becomes ischemic and irritable, resulting in PVCs. Could become the dominant pacemaker. With a PVC that becomes the dominant pacemaker, the rhythm is ventricular tachycardia, which is life threatening and must be terminated. Are a life-threatening cardiac rhythm. Ventricular dysrhythmias are considered to be very serious life-threatening dysrhythmias, mainly because they drop cardiac output. Are not significant; PVCs are not dangerous. Ventricular dysrhythmias are considered to be very serious, life-threatening dysrhythmias, mainly because they drop cardiac output. Show that the rhythm is regular. When PVCs occur, the rhythm is irregular, not regular.
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