Daytime sleepiness is not that uncommon. There are many who fall asleep while at work or while reading. Wait before taking it so lightly. It may mean something
Sinus node is the natural pacemaker of the heart which gives out regular electrical pulses to produce each heartbeat. When it is diseased, this function is defective and
Interventricular septum is a common wall shared by the left ventricle and right ventricle. Normally it contracts with the left ventricle, that is why when it does not
Pericardial effusion is collection of fluid within the layers covering the heart. Pericardium is the covering of the heart. It has an inner layer and an outer layer.
Coronary arteries are blood vessels supplying oxygenated blood to the heart muscle. LAD is short for left anterior descending coronary artery. LAD is usually the largest branch of
Treadmill Exercise ECG is usually done with a computerized treadmill unit which controls the motor speed of the treadmill as well as monitors the ECG. ECG is recorded
First degree heart block is an abnormality in the electrical conduction of the heart noted on the ECG, the recording of the electrical activity of the heart. It
Three or more ventricular beats in a row at a rate above 100 per minute is termed ventricular tachycardia. Ventricular tachycardia lasting more 30 seconds or requiring termination
In pulsed wave Doppler, same piezoelectric crystal is used to transmit and receive the echo from the sample volume. Hence the signals are sent out in pulses and
Heart disease can occur with both increased function of the thyroid gland and decreased function of the thyroid gland. When thyroid function is increased, heart rate increases and