The purpose of this study is to compare the effect of heart rate on cardiac index in patients with or without left ventricular hypertrophy. The study will be conducted in postoperative heart surgery patients with a pacemaker.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Masking
NONE
Enrollment
11
Routine postoperative temporary pacemaker Rate change of 65-80-95-110-125 beats/second in random order at day 3-4 after operation
Department of Anaesthesiology, Århus University Hospital
Århus N, Denmark
Cardiac index
Time frame: At heart rates 65-80-95-110-125
Mean arterial blood pressure
Time frame: At heart rates 65-80-95-110-125
Ejection fraction
Echocardiographic index of systolic function
Time frame: Heart rates of 65-80-95-110-120
Strain
Echocardiographic index of systolic function
Time frame: Heart rates of 65-80-95-110-125
S-max
Echocardiographic index of systolic function
Time frame: Heart rates of 65-80-95-110-125 beats per second
E/E'
Echocardiographic index of diastolic function
Time frame: Heart rates of 65-80-95-110-125 beats per second
E/A ratio
Echocardiographic index of diastolic function
Time frame: Heart rates of 65-80-95-110-125 beats per second
E'/A' ratio
Echocardiographic index of diastolic function
Time frame: Heart rates of 65-80-95-110-125 beats per second
Isovolumetric relaxation index
Echocardiographic index of diastolic function
Time frame: Heart rates of 65-80-95-110-125 beats per second
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IVRT/IVRT'
Echocardiographic index of diastolic function
Time frame: Heart rates of 65-80-95-110-125 beats per second
End diastolic volume
Volume of left ventricle and end diastole
Time frame: Heart rates of 65-80-95-110-125 beats per second
End systolic volume
Volume of left ventricle at end systole
Time frame: Heart rates of 65-80-95-110-125 beats per second