16 Bilder zum Thema "electrocardiogram theory" bei ClipDealer

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The PR interval is age-related, and the PR interval should be assessed for abnormalities based on the age of the person being examined.
The atrioventricular junction area has bidirectional conduction ability, and the impulse can be conducted from the atrium to the ventricle or from the ventricle to the atrium.
The effective refractory period of the ventricular muscle is equivalent to the time from the onset of QRS to the peak of the T wave on the ECG.
The presence of atrioventricular dissociation in wide-complex tachycardia is highly suggestive of ventricular tachycardia.
The PR interval of an ecg includes the time during which supraventricular impulses are transmitted through the atrioventricular node, His bundle, bundle branches, and terminal Purkinje fibers.
Ventricular tachycardia originating from the right ventricular outflow tract can be sustained or short-burst, and is a benign idiopathic ventricular tachycardia.
Impulse encounter effective refractory period will lead to conduction interruption, and encounter relative refractory period will lead to conduction delay.
A 2:1 left bundle branch block is considered when complete left bundle branch block alternates with normal QRS complexes and the PR interval is fixed.
Conduction disruption occurs when the impulse encounters the effective refractory period of the downstream conduction system during conduction.
The presence of atrioventricular dissociation in wide-complex tachycardia is highly suggestive of ventricular tachycardia.
Conduction delay occurs when the impulse encounters a relative refractory period downstream of the conduction system.
Sometimes, left ventricular hypertrophy with tall T waves is easily misdiagnosed as hyperkalemia and hyperacute T waves, and ECG needs to be carefully identified in combination with clinic.
Einthoven ECG triangle, including augmented unipolar limb lead illustration
Einthoven ECG triangle, including augmented unipolar limb lead illustration
Because of the slow conduction of atrioventricular node, the PR interval of adult ECG should be greater than 120ms. This physiological phenomenon is called atrioventricular delay.
In the frontal lead system, the lead axes of the 6 limb leads form a hexaxial reference system, which is one of the important theories of electrocardiography.

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