P wave: atrial depolarization originating in the sinoatrial node (SA node) PR interval: depolarization originating in the SA node and traveling through the atria, the AV node, and the His-Purkinje system QRS complex: ventricular depolarization ST segment: the duration between ventricular depolarizati...
Small p-wave Tall, tented (peaked) t-wave Wide QRS Widening of the QRS indicates severe cardiac toxicity Summary Following steps 1-10 above give the ideal system for interpreting an ECG. If you work through these steps you will be unlikely to miss anything significant. Click here for the...
Moreover we illustrated the main features of normal and pathological P wave including non-sinus P wave; left, right, and biatrial enlargement; interatrial conduction delay; and P pulmonale. Finally we described the utility of a careful evaluation of P wave duration and dispersion measured on ...
ECG interpretation usually starts with an assessment of the P-wave. The P-wave is a small, positive and smooth wave. It is small because the atria make a relatively small muscle mass. If the rhythm is sinus rhythm (i.e. under normal circumstances) the P-wave vector is directed downwards...
1. The “P wave” The graph shows a first electrical wave as electricity moves into the left and right atrium. 2. The “QRS Complex” This second pattern shows electricity moving through the right and left ventricles. 3. The “T wave” ...
The electrical activity occurs in a small patch of pacemaker cells called the sinus node during a regular heartbeat. This produces a small blip called the P wave when the impulse stimulates the atria. It then activates the main pumping chambers, the ventricles, and produces the large up-and-...
Atrial fibrillation ECG No or very small P wave Atrial flutter -Signal goes in a circle, atrial contraction frequency is higher than normal (200-300 contractions) Atrial flutter ECG Extra P waves --> makes T wave look longer and different- similar symptoms to A-Fib Where is the "lub dub...
Small volume with OLED screen. The resolution is 160*128. Be provided with functions of waveform preview, record review and event marking. Accurate record of the start time of the data sampled owing to the real time clock of itself. Avoid damage owing to the repeating...
Make subtle movements with your wrists to cause the marble to move backwards and forwards in a wave fashion as it progresses towards the other side. Try to get some small movements and some large movements of the marble with your tilting. The aim is to recreate an ECG. If the marble ...
CONTEC8000G uses the advanced international technique, with the powerful function and small shape. Adopt real-time sampling, display and store mode, it has many functions, such as real-time analyzing QRS wave, calculating heart rate and real-time print, and has thr...