The heart coordinates its rhythm of it’s own electrical system. So, the electrical impulse begins at the sinus node with each heartbeat. This sinus node is known as the heart’s natural pacemaker and it’s located in the right atrium. Moreover, this SA node produces the electrical impulses that set the rate and rhythm of the heartbeat. These impulses go through the walls of the right and left atria and force blood into the ventricles.

However, it has been shown that the heart rate and rhythm are quite different in men and women. They might be similar in the basic heart rate and rhythm, there is a difference in various aspects. Hence, ECG readings of women may be different, they have a faster baseline heart rate and a faster baseline heart rate than men. Additionally, women have a shorter sinus node refractory time, which means that the SA node recovers faster and it’s ready to fire an impulse again.

The ECG, also known as EKG or electrocardiogram, is a test used to monitor and record on graph paper the electrical activity of the heart. It is drawn by a computer and it gets the information from the electrodes placed on the skin of the chest, arms and legs. So, it has been shown that men have a shorter QT interval, which is the distance from the beginning of the QRS to the end of the T wave. The length of the QT interval in men is like that from puberty and through the major part of adulthood to at least age 55. During this time, the and rogen levels are higher in men.

Additionally, certain types of cardiac arrhythmias are more likely to happen to women than to men, including:

Sinus Node Dysfunction, known as sick sinus syndrome, which means that there is a slow or irregular heart rhythm that originates in the SA node. The beginning of the signal is in the sinus node, but it can become so slow in progressing to the atria and thus, it can make the heartbeat slow or irregular.

Supraventricular Tachycardia or Paroxysmal Supraventricular Tachycardia is a condition in which there is a fast heart rate, which starts above the AV node in the atria.

AV Nodal Re-entry Tachycardia is a type of rapid heart rate which originates in the AV node. The AV node instead of sending the impulse down one pathway, there are two pathways through the AV node. During this condition, the heart beats unusually fast.

Postural Orthostatic Tachycardia Syndrome is a condition That quite often affects women and they are more prone to experiencing a drop in blood pressure, passing out, a rise in heart rate, lightheadedness, or dizziness.

Long QT Syndrome is a condition in which the QT interval is longer than normal. Women with long QT syndrome are at a higher risk of life-threatening forms of ventricular tachycardia.