General Concepts 5 min read
The ECG Leads, Polarity and Einthoven’s Triangle
There are three lead systems that make up the standard ECG: · Standard Limb Leads (Bipolar): I, IlI & III · Augmented Limb…
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Parts of an ECG
The standard ECG has 12 leads. Six of the leads are considered “limb leads” because they are placed on the…
General Concepts 3 min read
Electrocardiogram (ECG)
An electrocardiogram (ECG) is a test which measures the electrical activity of your heart to show whether or not it…
General Concepts 2 min read
High blood pressure: Tips for prevention
If you have risk factors for hypertension, you can take steps now to lower your risk for the condition and…
General Concepts 6 min read
How to understand high blood pressure readings
Two numbers create a blood pressure reading: Systolic pressure: This is the first, or top, number. It indicates the pressure in…
General Concepts 4 min read
What is high blood pressure?
High blood pressure, or hypertension, occurs when your blood pressure increases to unhealthy levels. Your blood pressure measurement takes into…
General Concepts 5 min read
What is blood pressure?
When your heart beats, it pumps blood round your body to give it the energy and oxygen it needs. As…
General Concepts 5 min read
Transmission of Cardiac Impulse
1. Conduction over Atrial Muscle: Cardiac impulse originated at the S.A node is transmitted over both the atria like concentric…
General Concepts 3 min read
Systemic and Pulmonary Circulation
Key Terms alveoli: Air sacs in the lungs that provide the surface for gas exchange between the air and capillaries.…
General Concepts 3 min read
Heart Valves
The heart has four valves – one for each chamber of the heart. The valves keep blood moving through the…
General Concepts 7 min read
Cardiac Cycle
The period of time that begins with contraction of the atria and ends with ventricular relaxation is known as the cardiac…
General Concepts 6 min read
What to know about cardiac muscle tissue
Cardiac muscle tissue, or myocardium, is a specialized type of muscle tissue that forms the heart. This muscle tissue, which…