نتایج جستجو برای: 70 of maximum heart rate
تعداد نتایج: 21270622 فیلتر نتایج به سال:
Background and Aim: The purpose of this study was to compare the effect of thiopental sodium-midazolam combination on the stress response and hemodynamic changes between tracheal intubation and laryngeal mask airway insertion during airway management. Materials and Methods: In this clinical trial study, 70 patients ASA 1, 2 candidates for elective surgery were randomly divided into two groups o...
while performance-based language assessment has led to an increased authenticity and content validity in the practice of writing assessment, the reliability of ratings has become a major issue. research findings have shown different reactions by native english speaker (nes) and non-native english speaker (nns) teachers to students’ writings. the focus of this study is on investigating whether i...
let g=(v,e) be a graph with vertex set v and edge set e.for two vertices u,v of g ,the closed interval i[u,v] ,consists of u,v and all vertices lying in some u-v geodesic in g.if s is a set of vertices of g then i[s]is the union of all sets i[u,v]for u,v ? s. if i[s]=v(g) , then s is a geodetic set for g.the geodetic number g(g) is the minimum cardinality of geodetic set.the maximum cardinalit...
Background: We designed a cross-sectional study to determine electrocardiographic disorders in Down syndrome patients with congenitally normal hearts in a bid to predict fatal cardiac arrhythmia in the future. Materials and Methods: We investigated 60 children with DS without congenital abnormal hearts. Sixty healthy juveniles were also included in the study as a control group. Physical examina...
A percentage of either measured or predicted maximum heart rate is commonly used to prescribe and measure exercise intensity. However, maximum heart rate in athletes may be greater during competition or training than during laboratory exercise testing. Thus, the aim of the present investigation was to determine if endurance-trained runners train and compete at or above laboratory measures of 'm...
Objective: To determine the safety and cardiac chronotropic responsiveness to early atropine dobutamine stress echocardiography (DSE) in the elderly. Design: Retrospective study of 258 patients > 70 years who underwent early atropine DSE and 290 patients> 70 years who underwent conventional DSE. In the early atropine protocol, atropine was started at 20 mg/kg/min of dobutamine if heart rate was...
OBJECTIVE To determine the safety and cardiac chronotropic responsiveness to early atropine dobutamine stress echocardiography (DSE) in the elderly. DESIGN Retrospective study of 258 patients >or= 70 years who underwent early atropine DSE and 290 patients >or= 70 years who underwent conventional DSE. In the early atropine protocol, atropine was started at 20 microg/kg/min of dobutamine if hea...
in the area of automotive engineering there is a tendency to more electrification of power train. in this work control of an induction machine for the application of electric vehicle is investigated. through the changing operating point of the machine, adapting the rotor magnetization current seems to be useful to increase the machines efficiency. in the literature there are many approaches wh...
Aim and Background: Rapid and Confident induction of anesthesia is a goal for the anesthesiologist. In the meanwhile, most of anesthetic drugs are not without complication. In this study we evaluated the effects of anesthesia induction with halothane by single breath on hemodynamic parameters in pediatric patients. Methods and Materials: In this study 50 children were enrolled. For induction o...
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