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2. Electrocardiography - Wikipedia

   en.wikipedia.org/wiki/Electrocardiography

   Electrocardiography is the process of producing an electrocardiogram (ECG or EKG [a]), a recording of the heart's electrical activity through repeated cardiac cycles. [4] It is an electrogram of the heart which is a graph of voltage versus time of the electrical activity of the heart [ 5 ] using electrodes placed on the skin.

3. Electrogram - Wikipedia

   en.wikipedia.org/wiki/Electrogram

   The typical meaning of an "ECG" is the 12-lead ECG that uses 10 wires or electrodes to record the signal across the chest. Interpretation of an ECG is the basis of a number of cardiac diseases including myocardial infarction (heart attack) and arrhythmias such as atrial fibrillation .

4. Cardiac electrophysiology - Wikipedia

   en.wikipedia.org/wiki/Cardiac_electrophysiology

   Drawing of the ECG, with labels of intervals. Cardiac electrophysiology is a branch of cardiology and basic science focusing on the electrical activities of the heart.The term is usually used in clinical context, to describe studies of such phenomena by invasive (intracardiac) catheter recording of spontaneous activity as well as of cardiac responses to programmed electrical stimulation ...

5. List of medical abbreviations - Wikipedia

   en.wikipedia.org/wiki/List_of_medical_abbreviations

   Pronunciation follows convention outside the medical field, in which acronyms are generally pronounced as if they were a word (JAMA, SIDS), initialisms are generally pronounced as individual letters (DNA, SSRI), and abbreviations generally use the expansion (soln. = "solution", sup. = "superior").

6. QT interval - Wikipedia

   en.wikipedia.org/wiki/QT_interval

   The QT interval is a measurement made on an electrocardiogram used to assess some of the electrical properties of the heart.It is calculated as the time from the start of the Q wave to the end of the T wave, and approximates to the time taken from when the cardiac ventricles start to contract to when they finish relaxing.

7. QRS complex - Wikipedia

   en.wikipedia.org/wiki/QRS_complex

   Schematic representation of a normal sinus rhythm ECG wave. Diagram showing how the polarity of the QRS complex in leads I, II, and III can be used to estimate the heart's electrical axis in the frontal plane. The QRS complex is the combination of three of the graphical deflections seen on a typical electrocardiogram (ECG or EKG). It is usually ...

8. List of medical abbreviations: E - Wikipedia

   en.wikipedia.org/wiki/List_of_medical...

   Emergency Medical Service(s) EMU: early morning urine sample (being the most concentrated, generally used for pregnancy testing) Emul: emulsion: ENT: ear, nose, and throat (see otolaryngology) EOB: edge of bed EoL: End-of-life (adjective) EoLC: End-of-life care: EOM: extraocular muscles: EOMI: extraocular movements intact (see eye movement) EPCT

9. P wave (electrocardiography) - Wikipedia

   en.wikipedia.org/wiki/P_wave_(electrocardiography)

   The P wave is a summation wave generated by the depolarization front as it transits the atria. Normally the right atrium depolarizes slightly earlier than left atrium since the depolarization wave originates in the sinoatrial node, in the high right atrium and then travels to and through the left atrium.