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Biomedical subjects

K Karlócai

Publications and source records attributed to K Karlócai.

14 recordsLinked to original sources
PubMed1999

Early proarrhythmia during intravenous amiodarone treatment.

We present a case of early (within the first 24 hours) development of malignant torsades de pointes (TdP) associated with intravenous amiodarone therapy. After correction of predisposing factors (heart failure, hypokalemia, digoxin) amiodarone again resulted in torsades. This observation suggests that in patients who have experienced amiodarone-induced proarrhythmia, amiodarone administration under different, more stable clinical conditions may still be hazardous.

Adult↗
PubMed1998

[Ventricular tachycardia masquerading as supraventricular tachycardia].

To distinguish supraventricular tachycardia with aberrancy from ventricular tachycardia is sometimes difficult. It seems to be easy to distinguish the two forms in patients with preexisting bundle branch block: if the QRS morphology during tachycardia is identical to those during at rest the tachycardia is supraventricular, if different, ventricular. We present two cases with preexisting bundle branch block and wide complex tachycardia whose QRS morphologies were almost same to those during normal rest rhythm. The atrioventricular dissociation and the response to adenosine and lidocaine strongly suggests ventricular tachycardia. In these cases ventricular tachycardia masqueraded as supraventricular tachycardia and the identical QRS morphology with the preexisting bundle branch block may suggest a misdiagnosis of supraventricular tachycardia.

Aged↗
PubMed1997

[The use of adenosine in the diagnosis and treatment of cardiac arrhythmias].

The authors investigated the effect of adenosine or ATP on narrow QRS tachycardia in 56 pts, 3 pts with wide QRS tachycardia 9 pts with suspected latent preexcitation and 10 pts with PVC suspected to be ventricular parasystole. After the bolus iv. administration of adenosine or ATP every SVT was stopped related to AV node (44 pts), but in the rest twelve related to atrial origin of SVT only one automatic atrial tachycardia could be stopped. From the 9 patient suspected to have concealed WPW 2 pts had delta wave during the effect of adenosine, and in four pts parasystole was demonstrated among the pts had varying coupling interval PVC. None of the pts who had wide QRS tachycardia was the tachycardia stopped, but in two cases the supraventricular origin--atrial flutter and tachycardia--was discovered. The authors emphasize the favourable effect of adenosine in narrow complex tachycardia and suggest that it can given safely in wide QRS tachycardia of unknown origin either. The diagnostic effect of adenosine can be used in sinus rhythm too if latent preexcitation or ventricular parasystole is suspected.

Adenosine Triphosphate↗
PubMed1997

[Headache as a symptom of angina].

The authors report two cases where headaches was the only manifestation of severe myocardial ischemia. They had high degree coronaria sclerosis which was demonstrated by angiocardiography in one patient and at autopsy in the second patient. These findings suggest that in the mechanism of headache angina rather the pain perception than generalized vasospasm plays an important role.

Adult↗
PubMed1994

Effect of theophylline on periodic breathing in congestive heart failure measured by transcutaneous oxygen monitoring.

The effect of theophylline on periodic breathing was measured by transcutaneous oxygen monitoring in 7 patients suffering from chronic congestive heart failure. Theophylline significantly decreased the frequency of Cheyne-Stokes breathing. Transcutaneous oxygen monitoring proved to be a useful method to follow changes in the breathing pattern. The suggested mechanism of action of theophylline in reducing the incidence of periodic breathing is blockade of adenosine receptors.

Adult↗
PubMed1993

[Pathogenic role of a pacemaker in occult infection].

A case of seronegative pacemaker lead infection is presented. The diagnosis based on patient history and echocardiography was proved by removing the infected leads from the beating heart through surgery.

Echocardiography↗
PubMed1992

[Rhabdomyoma of unusual manifestation].

According to our knowledge in adult pericardial effusion has never been reported to be present in cases of cardiac rhabdomyoma. We present the history of an adult patient with pericardial effusion due to cardiac rhabdomyoma.

Adult↗
PubMed1992

[Parasystole?].

Explore the source record for details and available documents.

Arrhythmias, Cardiac↗
PubMed1992

[Parasystole?].

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Arrhythmias, Cardiac↗
PubMed1991

[Prinzmetal angina and syncope].

Authors report an unusual case of variant angina associated with unconsciousness. They were able to prove by coronary angiography the vasospasm of the circumflexus artery which was responsible for the morning attacks of the 35 year old patient with unconsciousness, ST segment elevation and high degree AV block. Unconsciousness was the first and earliest sign of the coronary vasospasm.

Adult↗