The most authoritative answer in 2024
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Noah Lee——Works at the International Energy Agency, Lives in Paris, France.
As a medical professional with expertise in cardiology, I can provide you with information regarding Q waves on an ECG. In a normal ECG, the presence of a Q wave is not unusual. When the first deflection of the QRS complex is upright, then no Q wave is present. However, a normal individual will typically have a small Q wave in many, but not all, ECG leads. It's important to note that the size and duration of the Q wave can vary depending on the lead being observed. Abnormalities of the Q waves are often indicative of more serious conditions, such as myocardial infarction (heart attack), and are discussed in more detail within the relevant sections of ECG literature. read more >> -
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Zoe Mitchell——Studied at the University of Manchester, Lives in Manchester, UK.
When the first deflection of the QRS complex is upright, then no Q wave is present. The normal individual will have a small Q wave in many, but not all, ECG leads. Abnormalities of the Q waves are mostly indicative of myocardial infarction and discussed further inside the relevant sections of ECG Reviews and Criteria.read more >>
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