Page 106 - Critical Care Notes
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4223_Tab02_045-106 29/08/14 10:00 AM Page 100
CV ■ ■ ■ ■ ■ P wave: Absent before PVC. edness, palpitations, heart skipping a beat.
Rhythm: Irregular where PVC occurs.
Management: Correct the cause; amiodarone, lidocaine.
QRS: Wide, bizarre, >0.10 sec; may be followed by compensatory pause.
Causes: Healthy persons, caffeine, nicotine, stress, cardiac ischemia or infarction, digoxin toxicity, elec-
trolyte imbalances, hypovolemia, fever, hypokalemia, hypoxia, hypermagnesemia, acid-base imbalance.
May be uniform (one ectopic focus or unifocal) or different foci (multifocal). Patient may complain of lighthead-
100 PVC Premature Ventricular Contraction (PVC)
