a number of epidemiologic studies have reported a positive relationship between heart rate, cardiovascular disease and mortality. to examine the correlation between heart rate and mortality after acute myocardial infarction (ami), 2147 patients hospitalized in coronary care units in isfahan were investigated in a cross-sectional study. their heart rate was measured according to an electrocardio...

background: patients with chronic stable angina often have a state of sympathetic hyperactivity. it is considered associated with myocardial ischemia and disappears after ischemia elimination. the aim of this study was to investigate the changes in heart rate variability parameters, a noninvasive technique for the evaluation of the autonomic nervous system activity, after successful revasculari...

background: esophagectomy is considered to be the main treatment for esophageal malignancies. among the different methods, transhiatal approach can cause less damage to patients and is widely used however, manipulation of esophagus result in heart rate and blood pressure variations. the aim of this study was to investigate changes in blood pressure and heart rhythm during transhiatal esophagect...

conclusions: the effects of propofol on hemodynamics and arterial oxygen pressure during one- or two-lung ventilation were not different from those of isoflurane. results: sixty patients (mean age = 4124.18 ± 18.63 years) were divided into two groups. the age and gender of the subjects were not statistically different between the two groups. in the propofol group, the arterial oxygen pressure d...

atraumatic restorative treatment (art) is a minimal intervention technique in the management of carious lesions, which results in negligible discomfort to the patient. the aim of this study was to assess and compare the discomfort levels during atraumatic restorative treatment and minimal cavity preparation (mcp: a method using rotary instruments) treatment procedures in a sample of school chil...

pyridostigmine bromide (pb) is a reversible cholinesterase inhibitor. the aim of this study was to determine the effect of orally administration of single dose sustained-released tablet of pyridostigmine bromide (pbsr) on the frequency domain indices of heart rate variability (hrv). thirty-two healthy young men were participated in this study. they were divided into 2 groups; the pyridostigmine...