by Ankit Chadha | Sep 18, 2022
Tachycardia This is defined as a heart rate of > 100 bpm. Whilst it can be normal physiological response to increased demand (e.g., exercise), there are many arrythmias which also give rise to tachycardias. Atrial fibrillation This is a chaotic irregular atrial... by Ankit Chadha | Sep 18, 2022
Interpreting an ECG The ECG graph displays voltage over time. x- axis = time. Length in 25mm/s and shows recording over 10s Each small box is 0.04s, and large box = 0.2s y-axis = voltage, measured in mV Interval = the time taken from start of one wave to end of... by Ankit Chadha | Sep 18, 2022
Bradycardias Bradycardia is defined as a heart rate of fewer than 60 beats per minute. Bradycardia can be normal in some people, but can also lead to haemodynamic compromise, leading to the development of symptoms. Symptoms Hypotension (< 90mmHg) Syncope Heart... by Ankit Chadha | Sep 18, 2022
How an ECG works The ECG uses electrodes placed on the skin to measure the electrical activity of the heart. The standard ECG consists of 10 electrodes, which provide a 12-lead output. There are 6 electrodes placed on the chest and 1 on each limb. One of these is a...
