Parasistolia ventricular / Ventricular parasistolia

Se presenta el caso de un hombre de 54 años de edad con historia de un infarto del miocardio inferior antiguo y función ventricular izquierda normal, cuya atención en la consulta externa de nuestra institución se inició por palpitaciones frecuentes. El electrocardiograma mostró extrasístoles ventriculares de una morfología y en el monitoreo Holter se documentó extrasístoles ventriculares frecuentes de una morfología con periodos de acoplamiento variable y con latidos de fusión. Se concluyó la presencia de un foco parasistólico ventricular.

We present a case of a 54 years old male who had had an inferior myocardial infarction previously, with normal ejection fraction of the left ventricle whose care in the autopatient clinic of our institution started by frequent palpitations. The electrocardiogram showed premature ventricular contractions and Holter monitoring documented frequent premature ventricular contractions with periods of variable coupling and fusion beats. It was concluded the presence of ventricular parasystole.

Unexpected Intermittent Preexcitation Syndrome (WPW Type) in Patient with Ventricular Parasystole during General Anesthesia: A case report / 대한마취과학회지

We report a case in which WPW (Wolff-Parkinson-White)-type preexcitation syndrome arose unexpectedly immediately after induction of general anesthesia on a 25-yr-old man who had another rare cardiac arrhythmia, parasystole. His preoperative ECG showed ventricular bigeminy and a delta wave was observed after induction of anesthesia with fentanyl, midazolam and propofol. Anesthesia was maintained with propofol, fentanyl and nitrous oxide. The intraoperative ECG showed varying and temporary responsiveness to drugs such as atropine, lidocaine and ephedrine. After we started to infuse the dobutamine, the delta wave, ventricular bigeminy disappeared on the intraoperative ECG. We should consider the influence of anesthesia-related agents on arrhythmia, and aim to prevent and manage tachyarrhythmias caused by this syndrome.

A Case Report about Anesthesia of the Patient with Ventricular Parasystole / 대한마취과학회지

Parasystole is of special interest among the disturbances of ectopic impulse formatioo. First, a parasystolic arrhythmia is of clinical importance because the ventricular origin ordinarily indicates the presence of organic heart disease. Second, parasystole, although not rare, is frequently overlooked because it is difficult to be differentiated from extrasystole. In this paper a ventricular parasystole is presented. A 48 year-old woman was seen with an irregular pulse rate not accompanying cardiac symptoms or signs. The chest radiograph failed to show cardiomegaly. E.K.G. revealed the dominant rhythm of sinus origin with intermittent ventricular parasystolic beats. The basic rhythm was sinus with a rate of 83 per minute. The coupling interval varied between 0.52 & 0.7 second. The shortest, calculated interectopic interval ranged from 45.2 to 49.7 (These numbers represent hundreds of a second). Occasional ventricular fusion beats appeared. She was uneventfully nephrectomized under general anesthesia with halothane-N2O-O2for left renal empyema of tuberculosis. She dispensed well with any antiarrhythmic agent during admission.