نتایج جستجو برای: impedance cardiography
تعداد نتایج: 36187 فیلتر نتایج به سال:
Cardiodynamic and hemodynamic reactions to emotion-eliciting film sequences were investigated. Thirty-two healthy subjects (12 women, 20 men) were randomly assigned to one of two groups. In the first group, anger was induced using selected scenes of the film "Ragtime." In the second group, scenes of the film "The Shining" were chosen to elicit fear. A documentary film was used as a baseline sti...
OBJECTIVE To use the ratio of early mitral inflow peak velocity (E) to mitral flow propagation velocity (FPV) measured in the early phase of myocardial infarction (early phase E/FPV) to evaluate the training effects of 8 weeks' cardiopulmonary rehabilitation in patients post-myocardial infarction. DESIGN Single-blinded, randomized control trial. PARTICIPANTS Eighty-seven patients with acute...
INTRODUCTION Impedance cardiography (ICG) is a reliable, noninvasive method allowing the assessment of the hemodynamic profile in hypertensive patients. The aim of the study was to evaluate the potential hemodynamic effects of diuretics with ICG and examine whether the empiric administration of diuretics actually has a substantial impact on thoracic fluid content (TFC). METHODS The study popu...
Prior work has repeatedly demonstrated that people who have current major depression exhibit blunted cardiovascular reactivity to acute stressors (e.g., Salomon et al., 2009). A key question regards the psychobiological basis for these deficits, including whether such deficits are depressed mood-state dependent or whether these effects are trait-like and are observed outside of depression episo...
Worry has been related to delayed stress recovery and cardiovascular disease risk. Cardiovascular responses to a range of laboratory tasks were examined in this study of high and low worriers. Undergraduate women were recruited with the Penn State Worry Questionnaire to form low (n=19) and high (n=22) worry groups. These individuals engaged in six laboratory tasks (orthostatic stress, supine re...
This research was designed to investigate the relationship between sympathetic and parasympathetic autonomic nervous system (ANS) responses to the perception of social targets varying in social status. Participants varying in subjective financial status were presented with faces assigned with either a low, average, or high financial status. Electrocardiographic and impedance cardiography signal...
Hypertension is a chronic disease that is controlled in the United States in only 34% of those taking antihypertensive medications. Because hypertension is a hemodynamic disorder, the patient's hemodynamic profile before and after medical intervention may assist in the decision and evaluation of ongoing antihypertensive therapy. There are several medication classes used in the management of hyp...
The purpose of the present study was to assess the relationship between the rapidity of increased oxygen uptake (VO2) and increased cardiac output (CO) during heavy exercise. Six subjects performed repeated bouts on a cycle ergometer above the ventilatory threshold (approximately 80% of peak VO2) separated by 10-min recovery cycling at 35% peak VO2. VO2 was determined breath-by-breath and CO wa...
BACKGROUND Although the prone position providing better exposure for anorectal surgery is required it can cause a reduction of cardiac output and cardiac index. The goal was to compare haemodynamic changes assessed by impedance cardiography during anorectal surgery under low-dose spinal anaesthesia in lithotomy and jack-knife position. METHODS The prospective randomized controlled study inclu...
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