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Which of the cardiac pacemakers has an intrinsic rate of 40 to 60 beats per min?
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∙ 11y ago
perknejie fibres
Wiki User
∙ 11y ago
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What portion of the cardiac conduction system has the fastest intrinsic rate?
sino atrial nodes is the fastest intrinsic rate
What is the intrinsic rate of sa node?
The sinoatrial node has an intrinsic rate of about 100 beats per minute, but it is normally down regulated by the vagus nerve.
What has the author David Jensen written?
David Jensen has written: 'Intrinsic cardiac rate regulation'
When are pacemakers most frequently prescribed?
Pacemakers are most frequently prescribed when the heartbeat decreases under 60 beats per minute at rest (severe symptomatic bradycardia). They are also used to slow a fast heart rate over 120 beats per minute at rest (tachycardia).
Heart rate of 80 beats per minute her cardiac output is 4 liters what is her stroke volume?
75
What is the cardiac output of a person with a stroke volume of 60 ml and a heart rate of 90 beats per minute?
nothing
What are the two factors of cardiac output?
The stroke volume and the heart rate. The stroke volume is the volume of your blood and heart rate is how many beats there are per minute.
What is the duration of the cardiac cycle?
It depends on the heart rate. You take 72 beats per minute. Then the duration of one beat is 75 per minute. Then each beat will take 0.8 second to complete. This is taken duration of the cardiac cycle. You take 100 beats per minute. Then each beat will take 0.6 second to complete. This duration will be the duration of the cardiac cycle.
Calculate the cardiac output when stroke volume is 70 cm3 and the heart rate is 70 beats per minute?
Cardiac Output = stroke volume x heart rate Therefore, 70cm3 x 70 b/min = 4900 cm/min
SA node versus AV node?
1) Sino-atrial node is master node and atrio-ventricular node is on the path from SA node to impulse to ventricles. 2) SA node has intrinsic rhythme rate of about 72 beats/ minute and AV has intrinsic rhythme rate of about 50 beats per minute. 3) SA node has autonomic ( sympathetic and parasympathetic ) nerve supply and AV node do not have any such supply. 4) SA node regulates the heart rate and AV node slows down the conduction across the path, so that atria gets time to contract, to be fallowed by contraction of ventricles. 5) Disease of the SA node generally leads to sick sinus syndrome. Disease of the AV node generally leads to atrioventricular block.
What is cardic output?
Cardiac out put is the volume of blood pumped by the heart per minute. Cardiac output is a function of heart rate and stroke volume. The heart rate is simply the number of heart beats per minute. The stroke volume is the volume of blood, in milliliters pumped out of the heart with each beat. Increasing either heart rate or stroke volume increases cardiac output.
What is the length of the cardiac cycle if the heart rate is 80 beats per minute?
To find your answer, your first step is to divide the time (in this case a minute...a minute equals sixty (60) seconds) by the heart rate (e.g. 80 beats). So---60 divided by 80 will give you 0.75 seconds. Your answer will justify the time/length of the cardiac cycle.
