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[i][b]The Antiarrhythmic Properties of Lidocaine and Procaine Amide[/b]
The operative management of patients with congenital or acquired heart disease is often complicated by the occurrence of ventricular arrhythmias. Bigeminal rhythm or premature ventricular contractions are frequently noted with the induction of anesthesia, with tracheal intubation, during dissection and manipulation of the heart and great vessels, and with nasotracheal aspiration in the postoperative period. Their initial occurrence is most often related to a temporary period of hypoxia...[/i]
[i][b]Intensive coronary care:
Arrhythmias after acute myocardial infarction
Patrick Mounsey, M.D.[/b]
Cardiac arrhythmias after acute cardiac infarction were previously thought to be rare, this opinion having been based on clinical observation and routine electrocardiography. Recently, continuous electrocardiographic monitoring has shown that transient arrhythmias after cardiac infarction are relatively common. Indeed, if simple extrasystoles are included, they probably occur in over 80 per cent of patients, while more serious arrhythmias are seen in roughly 60 per cent. The arrhythmias develop during the first 10 days after acute cardiac infarction ; many are asymptomatic, short-lived and terminate spontaneously without specific antiarrhythmic treatment. Others, however, are potentially serious and call for highly specialized forms of treatment, including the use of antiarrhythmic drugs, electrical pacing for complete heart block and resuscitation of cardiac arrest. It is essential in planning an acute coronary care unit to provide continuous electrocardiographic monitoring during the first two to three days and for as long as arrhythmias continue, which may be up to a week or 10 days in certain cases. Only thus can arrhythmias be rapidly recognized and immediate appropriate treatment given where required...
The essential features of arrhythmias after acute cardiac infarction are their transience and rapidly changing nature.[/i]
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