atrioventricular block/nicotine

Pigs in which venous catheters were positioned for long-term use were injected i.v. with high doses of nicotine in physiol. saline. The LD50 was 2.656 mg/kg body weight. Clinical symptoms were mainly: forced respiration, muscular tremor to tetanoid spasms, cyanosis of the skin, salivation and

An attempt was made to study possible interaction between neuromodulation by adenosine and nicotine stimulatory effects. Dose-effect curves were made double blind in 7 nonsmoking, nonsnuffing healthy volunteers (25-49 years) before and during exposition to nicotine roughly corresponding to the

18 pigs in which venous catheters were positioned for long-term use were injected with nicotine in physiological saline: group 1: 1 mg without anaesthesia; group 2: 1 mg/animal, Hypnodil-anaesthesia; group 3: 0.0143 mg/kg body weight, Hypnodil-anaesthesia. The dose of 1 mg is corresponding to that

The usage of marijuana and its legalization has been growing rapidly, being abused by a wide range of age groups. Its effects on the heart are well known, but coronary artery vasospasm causing ST elevation myocardial infarction (STEMI) from Marijuana alone is rather lesser known. Herein, we report a

The incidence of cardiac events in patients with variant angina pectoris without significant coronary stenosis and ST-segment elevation was analyzed during a 12-year follow-up period in 273 consecutive patients (82% men) admitted from 1986 through 2010. Among the 252 patients who underwent

BACKGROUND Patients with syncope or near syncope of unknown etiology represent a great challenge to cardiologists. An initial symptomatic episode triggers a series of diagnostic analysis which remain unsatisfactory when negative. More invasive tools such as electrophysiologic testing yield only

OBJECTIVE Perioperative cardiac risk reduction using perioperative beta-blockade is being widely adopted. Recent research has identified a second-line agent, perioperative clonidine, that can be used to reduce the risk of perioperative cardiac mortality. Perioperative clonidine has some advantages

BACKGROUND The incidence of arrhythmic complications in Thai patients with acute coronary syndromes (ACS) has not been previously reported. The present study results will serve as the local database for future studies. OBJECTIVE To evaluate the incidence of arrhythmic complications in ASC in Thai

Only few data are available about the course of symptoms, cardiac diseases, and spontaneous rhythm in pacemaker patients. Therefore, we followed the course of 308 paced patients (age 72 +/- 11 years) with a mean implantation time of 63 +/- 45 months. RESULTS The symptom triad of syncope, dizziness,

Present-time Greenlanders are living a stressful 'westernized life' complete with an elevated consumption of tobacco and alcohol. The drinking water in Greenland is extremely soft and the diet is very low in calcium (and probably magnesium) and rich in carbohydrate and fat. Despite these different

OBJECTIVE To determine the mechanisms for exercise impairment in symptomatic patients with systemic sclerosis (SSc) using breath-by-breath expired-gas analysis with incremental exercise testing. METHODS Prospective, open trial. METHODS Fifteen consecutive patients with SSc seen at the Medical

A Holter monitorization study was performed in 100 voluntary university students (64 men and 36 women). The mean age was 23.6 years and organic heart disease was ruled out in all cases. Data were analysed in different subgroups including the practice of physical activity and subjects smokers or

Exposure to secondhand smoke (SHS), a major indoor air pollutant, is linked to increased cardiovascular morbidity and mortality, including cardiac arrhythmias. However, the mechanisms underlying the epidemiological findings are not well understood. Impaired cardiac autonomic function, indexed by