INTRODUCTION Studies in Europe and America showed that tachycardia, less often bradycardia, frequently accompanied partial seizures in Caucasian patients. We determine frequency, magnitude and type of ictal heart rate changes during partial seizures in non-Caucasian patients in Singapore. METHODS Partial seizures recorded during routine EEGs performed in a tertiary hospital between 1995 and 1...

BACKGROUND AND OBJECTIVES Intraoperative cardiac arrest is a severe event and its incidence in our hospital is 31:10000 anesthesias. This report aimed at presenting a case of cardiac arrest during general anesthesia in a patient submitted to cholecystectomy. CASE REPORT Female patient, 16 years old, 62 kg, physical status ASA I, submitted to cholecystectomy. Patient was premedicated with 15 m...

this report details the presence of hyperammonemia in a patient who sustained cardiac arrest after a traumatic amputation. serum ammonia levels may rise due to numerous etiologies; however, few reports detail its usefulness in diagnosing subclinical seizures. in this case, we successfully utilized persistently elevated serum ammonia levels as a marker of subclinical seizures in a patient who su...

AIMS The aim of this study was to examine the effect on symptoms in patients with induced cardioinhibitory carotid sinus syndrome (ICSS) when treated or not treated with a pacemaker. METHODS AND RESULTS Sixty patients with a history of syncope or pre-syncope and ICSS were randomized to receive a permanent pacemaker (P group, n = 30) or no pacing (NP group, n = 30). ICSS was defined as a ventr...

Use of continuous transtracheal oxygen delivery systems combined with rhythmic chest compressions can provide excellent oxygenation and ventilation during cardiopulmonary resuscitation. However, occasional displacement of the transtracheal catheter results in life-threatening pneumomediastinal complications. We investigated using the pharyngeal lumen of a pharyngeal-tracheal lumened airway (PtL...

BACKGROUND Anything other than normal sinus rhythm can be classified as an arrhythmia. However not all arrhythmias need acute intervention. OBJECTIVE This article reviews which arrhythmias need intervention in an acute setting, and the various options available for intervention. DISCUSSION The impact of an arrhythmia upon perfusion determines what intervention should be considered. Consciou...

Ambulatory monitoring of the electrocardiogram in 100 healthy 14 to 16 year old boys showed heart rates ranging from 45 to 200 beats/minute during the day and from 23 to 95 beats/minute during sleep. Sinus arrhythmia was present in all cases and was the only variation noted in 17%. Sudden variations in the PP interval occurred in 41%, but a precise diagnosis of the mechanism was usually impossi...

OBJECTIVE The aim of this study was to assess whether the presence of procaine in crystalloid cardioplegic solution increases myocardial protection at the ultra structural level. METHODS Eighteen patients that underwent aortic valve replacement in the Hospital de Clínicas de Porto Alegre over a 10-month period were studied. They were randomly allocated into two groups: group A--eight patients...

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BACKGROUND Syncope is a transient loss of consciousness occasionally occurring in dogs with advanced myxomatous mitral valve disease (MMVD). OBJECTIVE (1) To study ECG changes during syncopal episodes in dogs with advanced MMVD and (2) to compare the occurrence of arrhythmias and changes in heart rate variability (HRV) between dogs with advanced MMVD with and without a history of syncope. A...