background and objective: obstructive sleep apnea syndrome (osas) is a prevalent disease in adults. limited evidence regarding the effect of severity of sleep apnea and depression on heart rate variability (hrv) indices exists. hence, we decided to focus on the association between hrv and severity of osas based on depression score. materials and methods: a total of 193 patients with confirmed o...

The matched filter was used to detect different signal features on an human heart electrocardiogram signal. The waveform features of interest were the QRS Complex, the R-R intervals, and the ST segments of four different electrocardiogram signals. The detection of the QRS Complex and the R-R interval were compared for accuracy and used in determining the length of the heart beat interval which ...

in this paper the main objective is to quantify and compare the instantaneous value of heart rate for normal breathing patterns during meditation and non meditation conditions. this paper involves analysis of variance (anova) technique for the analysis of the heart rate variability patterns during the meditative and non meditative states. the analysis is divided into three stages i.e. data acqu...

ramadan is a holy month for muslims and fasting in this month is the rule for any healthy matured person. nutritional and behavioral changes occurred during ramadan fasting may lead to several physiological change, such as blood pressure (2). studies evaluated the effects of ramadan fasting on blood pressure in hypertensive patients, are scarce and reported inadequate results. in this paper a s...

introduction automatic human emotion recognition is one of the most interesting topics in the field of affective computing. however, development of a reliable approach with a reasonable recognition rate is a challenging task. the main objective of the present study was to propose a robust method for discrimination of emotional responses thorough examination of heart rate variability (hrv). in t...

Myocardial substrate extraction, coronary sinus flow, cardiac output, and left ventricular pressure were measured at increasing pacing rates before and after propranolol (0.2 mg/kg) in 13 patients with hypertrophic obstructive cardiomyopathy (HOCM) during diagnostic cardiac catheterisation. At the lowest pacing rate myocardial oxygen consumption varied considerably between patients and very hig...

Twenty patients with angina pectoris associated with obstructive coronary arterial disease were investigated by stressing the heart by atrial pacing. Arterial and coronary sinus blood was sampled and the time taken to provoke angina (pacing time) measured. Nine of the patients acted as a control group and did not receive beta-blocking drugs. In this group both pacing time and myocardial lactate...

BACKGROUND This study aimed to evaluate the safety of tooth extraction in elderly patients with cardiovascular diseases. MATERIAL AND METHODS A total of 13 527 patients underwent tooth extraction at the Affiliated Ninth People's Hospital of Shanghai Jiaotong University. Age, sex, and diseases were analyzed. Cardiac monitoring during tooth extraction was performed in 7077 elderly patients with...

purpose : the present study was designed to evaluate the effects of aerobic and strength training on cardiac variables such as blood pressure, heart rate (hr), and metabolic parameters like cholesterol, high density lipoprotein (hdl), triglycerides and anthropometric parameters of obese women of punjab .   methods: this study was performed as an experimental study, in which subjects were random...