Electrocardiogram: Difference between revisions
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== Introduction == | |||
An electrocardiogram is also termed an ECG or EKG, is a simple test that records the heart's electrical activity. The ECG machine is designed to recognise and record any electrical activity within the heart. It provides information about the function of the intracardiac conducting tissue of the heart and reflects the presence of cardiac disease through its electrical properties. Understanding ECG helps to understand how the heart works. With each heartbeat, an electrical impulse starts from the superior part of the heart to the bottom. The impulse prompts the heart to contract and pump blood. | |||
== What ECG Test is used == | |||
ECG is used to | |||
detect bradycardia and tachycardia | |||
know steady or irregular heart rhythm | |||
The strength and timing of electrical signals as they pass through each part of your heart | |||
The test's results also can suggest other disorders that affect heart function. | |||
Study and detect many heart problems, such as heart attacks, arrhythmia, heart failure. | |||
The indications for exercise electrocardiography include the investigation of angina and post-myocardial infarction assessment as well as the postoperative examination of bypass surgery. | |||
•The first wave (p wave) represents atrial depolarisation (ventricular filling) | •The first wave (p wave) represents atrial depolarisation (ventricular filling) |
Revision as of 16:18, 29 October 2018
Original Editor Uchechukwu Chukwuemeka
Top Contributors - Uchechukwu Chukwuemeka, Kim Jackson, Lucinda hampton, Ayelawa Samuel, Karen Wilson and Rishika Babburu
Introduction[edit | edit source]
An electrocardiogram is also termed an ECG or EKG, is a simple test that records the heart's electrical activity. The ECG machine is designed to recognise and record any electrical activity within the heart. It provides information about the function of the intracardiac conducting tissue of the heart and reflects the presence of cardiac disease through its electrical properties. Understanding ECG helps to understand how the heart works. With each heartbeat, an electrical impulse starts from the superior part of the heart to the bottom. The impulse prompts the heart to contract and pump blood.
What ECG Test is used[edit | edit source]
ECG is used to
detect bradycardia and tachycardia
know steady or irregular heart rhythm
The strength and timing of electrical signals as they pass through each part of your heart
The test's results also can suggest other disorders that affect heart function.
Study and detect many heart problems, such as heart attacks, arrhythmia, heart failure.
The indications for exercise electrocardiography include the investigation of angina and post-myocardial infarction assessment as well as the postoperative examination of bypass surgery.
•The first wave (p wave) represents atrial depolarisation (ventricular filling)
•Q wave representing septal depolarisation
•R wave representing ventricular depolarisation
•S wave representing depolarisation of the Purkinje fibres
•QRS is ventricular depolarisation
•T wave is ventricular repolarisation
•ST segment is a flat line any change shows myocardial infarction
• P wave; QRS complex, and T wave show the 3phase of cardiac cycle in one heart beat
•Sinus arrhythmia, bradycardia, tachycardia, and asystole
•after the PQRST complex a U wave, seen electrolyte imbalance(potassium)