Author: Johnson Francis

QRS Complex QRS complex represents the depolarization of the ventricles. Initial negative deflection is named as the Q wave and a negative deflection after a positive deflection the

Segments and Intervals in an ECG Segments and Intervals in an ECG: A segment in an electrocardiogram is the region between two waves. PR segment begins at the

Waves in an Electrocardiogram The usual waves in an ECG are P, QRS and T waves. P waves represent depolarization of the atria. QRS represents the depolarization of

Transesophageal Echocardiography (TEE) Transesophageal Echocardiography (TEE) is a specialised form of echocardiographic study using an echo probe held at the tip of an endoscope like device.  As the

Left Bundle Branch Block (LBBB) and STEMI criteria Left Bundle Branch Block and STEMI criteria: Left bundle branch block is manifested on the ECG with wide QRS with

M-Mode echocardiography and Anatomical M-Mode M-Mode echocardiography (Time-motion mode) was one of the earliest tools of the echocardiographer. M-Mode gives an ice-pick view of the heart. The vertical

Tricuspid Regurgitation (TR) Tricuspid regurgitation can be either low pressure TR or high pressure TR depending on the right ventricular systolic pressure. High pressure TR occurs when the

Mitral Flow Doppler: Mitral flow is assessed by placing the Doppler cursor just distal to the mitral valve in apical four chamber view.

“Stent Creep” seen in Hancock bioprosthesis is due to inward bending of the stent struts.

A new method for peripheral intra arterial thrombolysis is using a porous balloon with low pressure.