CPR is an emergency method of heart pumping in case of attacks and includes artificial ventilation. 100 compressions should be performed every minute.
<h3>What is CPR?</h3>
CPR is a cardiopulmonary resuscitation method of an emergency first aid tool used as a life-saving technique in case of heart attacks and drowning.
CPR is given to a person when the heart rate is very less and the pulse rate is very faint. The rate of the compression varies for age groups and should be given with a perfect rhythm and sync.
Cardiopulmonary resuscitation should be given as 30 compressions and then artificial breath or ventilation in between followed by another 30 compressions.
Therefore, option C. 100 compression in 1 minute is correct.
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Answer:
a. QRS
Explanation:
In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.
Generally, the cardiac cycle occurs in two (2) stages;
Diastole : in this stage, the ventricles is relaxed and would be filled with blood.
Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.
The right atrioventricular valve (AV) comprises of three (3) leaflets (flaps) which opens and closes in order to allow for the flow of blood from the right atrium of the human heart to the right ventricle. Also, the right atrioventricular valve is saddled with the responsibility of preventing blood from flowing backward in the mammalian heart.
The QRS complex represents the time necessary for the impulse to travel through the bundle of His, the bundle branches, and the Purkinje fibers to complete ventricular activation or contraction, known as ventricular depolarization. QRS is simply a combination of the Q-wave, R-wave and the S-wave which represents electrical impulses.