MEDICAL
HEART AND PERICARDIUM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The action potential arises within the SA node
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The QRS complex and the T wave are ventricular electrical events
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The origin of action potential is described as ectopic
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Each P wave us followed by QRS complex
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Detailed explanation-1: -The rate in NSR is generally regular but will vary depending on autonomic inputs into the sinus node. When there is irregularity in the sinus rate, it is termed “sinus arrhythmia.” A sinus rhythm faster than the normal range is called a sinus tachycardia, while a slower rate is called a sinus bradycardia.
Detailed explanation-2: -Normal sinus rhythm is defined as the rhythm of a healthy heart. It means the electrical pulse from your sinus node is being properly transmitted throughout the heart muscle. In adults, normal sinus rhythm usually accompanies a heart rate of 60 to 100 bpm.
Detailed explanation-3: -Sinus dysrhythmia is the same as sinus rhythm except there is the presence of a patterned irregularity. It can be described as a cycle of “slowing, then speeding up, then slowing again.”