What does an EKG show?

Answer 1

Electrocardiogram records the electrical activity of your heart. ---- An EKG (or electrocardiogram) is an electrical representation of the cardiac activity as detected by surface electrodes placed in specific locations across the chest and extremities. These electrodes detect the electrical activity occurring in the heart and these are depicted as deflections of a line. The usual deflections, or waves, are denoted PQRST. There are other waves which are sometimes seen in normal or abnormal states, such as the U wave. The P wave represents atrial depolarization. This is followed by the PR interval, which represents the amount of time the depolarization wave takes to get through the AV node to the ventricular conduction system. The QRS represents ventricular depolarization. ST segment deflection can indicate ventricular injury or ischemia, such as that seen in myocardial infarctions. The QRS is followed by the T wave, which represents ventricular repolarization. The atrial repolarization wave is hidden by the much larger voltage of the QRS. Various abnormal states can cause changes in the usual appearance of the EKG, such as electrolyte abnormalities (e.g. hypo- or hyperkalemia), medications (e.g. digitalis), infections (e.g. myocarditis, pericarditis), and ischemia (e.g. angina or myocardial infarction). This is why the EKG is useful as a diagnostic test. It is not, however, a perfect test and many innocuous conditions can cause abnormalities and an EKG can be normal even when there is serious pathology, which is why other tests are frequently necessary.

Answer 2

EKG = Electro Kardio Gram (Electro Cardio Gram)-

This test provides a visual readout of the hearts electrical activity. The origination of the electric current that actually powers the heart comes from a combination of several factors. Electrolytes and brain activity are two factors. This electric current originates in the SA Node of the heart (Sino Atrial) The Atria are the top chambers of the heart and the Ventricles are the lower and larger chambers. The SA Node regulates the electric output that powers the muscular contractions of the heart muscle that force blood through the heart and out to the body. Blood is in a continuous loop and it all starts with the contractions started by the SA Node.

The EKG is the display of that activity.

The readout of the EKG goes on points. P Q R S T : Waves

Each segment defines an area of the heart that is contracting. For example P wave is the initial Atria activity. QRS is the activity in the lower ventricles and T is the relaxing of the muscle to rest. The beat you hear actually is the valves opening and closing during the contraction and relaxation.

Hope this was helpful

Answer 3

shows the heart's activity and may reveal a lack of oxygen (ischemia ). Electrodes covered with conducting jelly are placed on the patient's chest, arms, and legs. The electrodes send impulses of the heart's activity through a monitor

Answer 4

heart