Answer to Question 1
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An abnormal (i.e., pathologic) Q wave is more than 0.04 seconds in duration or more than one third the height of the following R wave in that lead. Myocardial infarction is one possible cause of abnormal Q waves. In the early hours of infarction, an abnormal Q wave may not have developed to its full width or amplitude. Therefore a single ECG tracing might not identify an abnormal Q wave. In a patient with a suspected myocardial infarction, be sure to look at Q waves closely. Even if the initial ECG tracings do not show Q waves that are more than 0.04 seconds in duration or equal to or more than one third of the amplitude of the QRS complex, pathology must be considered if the Q waves become wider or deeper in each subsequent tracing.
Answer to Question 2
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The right coronary artery supplies the right atrium and ventricle with blood.
Connell's experimental manipulation of species indicated the presence of competition.
Blockage and reperfusion following myocardial infarction
In the summer of 1793, a yellow fever epidemic struck Philadelphia, killing nearly 4,000. Tens of th
Cross section of a myocardial infarction.
Compressing the breast between plates provides a better image of breast tissue. Regular mammograms ...
If y = 0.02 sin (30x - 400t) (SI units), the velocity of the wave is