Electrocardiography and Sinus bradycardia

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Difference between Electrocardiography and Sinus bradycardia

Electrocardiography vs. Sinus bradycardia

Electrocardiography (ECG or EKG) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on the skin. Sinus bradycardia is a sinus rhythm with a rate that is lower than normal.

Atrium (heart)

The atrium is the upper chamber in which blood enters the heart.

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Bradycardia

Bradycardia is a condition wherein an individual has a very slow heart rate, typically defined as a resting heart rate of under 60 beats per minute (BPM) in adults.

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Epileptic seizure

An epileptic seizure is a brief episode of signs or symptoms due to abnormally excessive or synchronous neuronal activity in the brain.

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Hypothermia

Hypothermia is reduced body temperature that happens when a body dissipates more heat than it absorbs.

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Long QT syndrome

Long QT syndrome (LQTS) is a condition which affects repolarization of the heart after a heartbeat.

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P wave (electrocardiography)

The P wave in the ECG represents atrial depolarization, which results in atrial contraction, or atrial systole.

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PR interval

In electrocardiography, the PR interval is the period, measured in milliseconds, that extends from the beginning of the P wave (the onset of atrial depolarization) until the beginning of the QRS complex (the onset of ventricular depolarization); it is normally between 120 and 200ms in duration.

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QRS complex

The QRS complex is a name for the combination of three of the graphical deflections seen on a typical electrocardiogram (EKG or ECG).

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Sick sinus syndrome

Sick sinus syndrome (SSS), also called sinus dysfunction, or sinoatrial node disease ("SND"), is a group of abnormal heart rhythms (arrhythmias) presumably caused by a malfunction of the sinus node, the heart's primary pacemaker.

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Sinoatrial node

The sinoatrial node (SA node), also known as sinus node, is a group of cells located in the wall of the right atrium of the heart.

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Sinus rhythm

A sinus rhythm is any cardiac rhythm where depolarization of the cardiac muscle begins at the sinus node.

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Sinus tachycardia

Sinus tachycardia (also colloquially known as sinus tach or sinus tachy) is a sinus rhythm with an elevated rate of impulses, defined as a rate greater than 100 beats/min (bpm) in an average adult.

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Syncope (medicine)

Syncope, also known as fainting, is a loss of consciousness and muscle strength characterized by a fast onset, short duration, and spontaneous recovery.

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Vagal tone

Vagal tone refers to activity of the vagus nerve, a fundamental component of the parasympathetic branch of the autonomic nervous system.

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Ventricle (heart)

A ventricle is one of two large chambers in the heart that collect and expel blood received from an atrium towards the peripheral beds within the body and lungs.

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