What is sick sinus syndrome? Sick sinus syndrome is an abnormality of the natural pacemaker of the heart, the sino-atrial node, also known as sinus node and SA
What causes a heart murmur? A heart murmur is caused by a turbulent flow of blood. Normal laminar flow of blood is silent. Turbulence occurs when there is
What is regional wall motion abnormality? Regional wall motion abnormality means that the motion of a region of the heart muscle is abnormal. It is a term commonly
How does the heart muscle contract? Muscle contraction occurs due to the sliding in of actin and myosin myofilaments so that the length of the sarcomere decreases. Sarcomere
Sick sinus syndrome Sick sinus syndrome: A disorder in which the natural pacemaker of the heart (sinoatrial node) is abnormal, usually producing bradycardia and long pauses which can
Tachy-brady syndrome Tachy-brady syndrome: A condition in which tachycardia alternates with bradycardia. Classical manifestation of sick sinus syndrome.