27
Jan
Ecg Intervals And Segments. The ecg records the electrical activity of a large mass of atrial and ventricular cells not that of just a single cell. Waves segments intervals ecg weekly waves segments intervals cgs capture cardiac waveforms that result from changes in voltage measured between different points on the body. Each waveform recorded represents a specific portion of the electrophysiological events that occur during each cardiac cycle. The pr interval is the interval between the start of the p wave and the start of the qrs complex.
Segments should be examined to look for deviation from the isolectric line whilst intervals should be analysed with reference to their duration. The pr or pq interval starts at the start of the p wave and ends at the start of the qrs. Each waveform recorded represents a specific portion of the electrophysiological events that occur during each cardiac cycle. The pr interval determines whether impulse transmission from atria to ventricles is normal. Qt interval starts at the onset of the qrs and ends at the end of the t wave. It denotes the conduction of the impulse from the upper part of the atrium to the ventricle.
Note that the heart is beating in a regular sinus rhythm between 60 100 beats per minute specifically 82 bpm.
A normal ecg is illustrated above. Waves segments intervals ecg weekly waves segments intervals cgs capture cardiac waveforms that result from changes in voltage measured between different points on the body. Line that connects the end of the p wave with the beginning of the qrs complex. These are useful when assessing for certain types of pathology. It is important to recognize that segments and intervals are different entities. Difference between segments and intervals pr segment.