After reading this article you will learn about the definition and characteristics of Electrocardiogram (ECG). Definition of ECG: This is the graphic records of the variations in electrical potential caused by electrical activity of the heart muscle and detected at the body surface, as a method for studying the action of the heart muscle. As the cardiac impulse passes through [...]
After reading this article you will learn about the drugs acting on cardiac muscle. Resting Membrane Potential: The voltage difference across the membrane of a normal cell at rest is called as "resting membrane potential" of that cell. This is also known as "resting membrane voltage", and commonly abbreviated as Vm. Vm of various cells are as follows: The resting [...]
These are the glycosides naturally obtained from certain plants and contain active principles which act specifically on the failing heart and make them normal. That's why, they are called cardiac glycosides. All the cardiac glycosides have cardio tonic property. Differences Between Cardiac Glycosides and Other Cardiac Stimulants (Adrenaline, Theophylline, etc.). Cardiac Glycosides: (i) They increase force of myocardial contraction, but [...]