Final answer:
Normal vs abnormal Doppler waveforms differ primarily in velocity of blood flow, as shown in Doppler ultrasound and ECG readings, which can indicate cardiovascular conditions.
Step-by-step explanation:
Normal vs abnormal Doppler waveforms typically differ in terms of velocity of blood flow. The Doppler effect is a change in the observed frequency of a sound due to the relative motion between the source and the observer. Abnormalities in Doppler waveforms, such as those found in an echocardiogram (ECG), indicate changes in blood flow patterns which often suggest a variety of cardiovascular conditions. For instance, in Doppler ultrasound, which can be used to measure the speed of blood in the body, the waveform can indicate normal or abnormal blood flow.
The amplitude of a pulse is a measurement of how far the medium is displaced momentarily from a position of rest, whereas pulse length is a measurement of how long the pulse is. When viewing an ECG, common abnormalities include changes in frequency and shape of waves that correspond to different cardiac events. For example, in ventricular tachycardia, the shape of the QRS complex is abnormal, indicating a discrepancy from normal blood flow velocities and patterns.