Intrinsicoid deflection

Intrinsicoid deflection is a term used in Electrocardiography to describe the initial downward deflection in the QRS complex on the electrocardiogram. It is an important aspect of Cardiology and diagnostic medicine.

Definition

The intrinsicoid deflection is the time taken from the onset of the QRS complex to the peak of the R wave in the precordial leads. It is also known as the R wave peak time. This deflection is used as an indicator of the time taken for the depolarization wave to spread from the endocardium to the epicardium.

Clinical significance

The intrinsicoid deflection is used in the diagnosis of several cardiovascular diseases. An increased intrinsicoid deflection time can indicate Ventricular hypertrophy, while a decreased time can suggest a Myocardial infarction.

Measurement

The intrinsicoid deflection is measured in lead V6 of the Electrocardiogram. A normal intrinsicoid deflection time is less than 0.05 seconds.

See also

• Electrocardiography
• QRS complex
• Ventricular hypertrophy
• Myocardial infarction

References

Intrinsicoid deflection Resources
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