3. P Wave Overview - ECG assessment and ECG interpretation made easy скачать в хорошем качестве

3. P Wave Overview - ECG assessment and ECG interpretation made easy

📌𝗝𝗼𝗶𝗻 𝗢𝘂𝗿 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗖𝗵𝗮𝗻𝗻𝗲𝗹 𝗛𝗲𝗿𝗲:- https://t.me/bhanuprakashdr 📌 𝐅𝐨𝐥𝐥𝐨𝐰 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦:-   / drgbhanuprakash   📌𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗯𝗲 𝗧𝗼 𝗠𝘆 𝗠𝗮𝗶𝗹𝗶𝗻𝗴 𝗟𝗶𝘀𝘁:- https://linktr.ee/DrGBhanuprakash 3. P Wave Overview - ECG assessment and ECG interpretation made easy The P wave is the first positive deflection on the ECG and represents atrial depolarisation. The P wave is the first positive deflection on the ECG It represents atrial depolarisation Normal duration: greater than 0.12 s ( greater than 120ms or 3 small squares) Characteristics of the Normal Sinus P Wave ----------------------------------------------------------------------- Morphology Smooth contour Monophasic in lead II Biphasic in V1 Axis Normal P wave axis is between 0° and +75° P waves should be upright in leads I and II, inverted in aVR Duration Greater than 0.12 s (Greater than- 120ms or 3 small squares) Amplitude Greater than 2.5 mm (0.25mV) in the limb leads Greater than 1.5 mm (0.15mV) in the precordial leads Atrial abnormalities are most easily seen in the inferior leads (II, III and aVF) and lead V1, as the P waves are most prominent in these leads. The Atrial Waveform – Relationship to the P wave Atrial depolarisation proceeds sequentially from right to left, with the right atrium activated before the left atrium The right and left atrial waveforms summate to form the P wave The first 1/3 of the P wave corresponds to right atrial activation, the final 1/3 corresponds to left atrial activation; the middle 1/3 is a combination of the two In most leads (e.g. lead II), the right and left atrial waveforms move in the same direction, forming a monophasic P wave However, in lead V1 the right and left atrial waveforms move in opposite directions. This produces a biphasic P wave with the initial positive deflection corresponding to right atrial activation and the subsequent negative deflection denoting left atrial activation This separation of right and left atrial electrical forces in lead V1 means that abnormalities affecting each individual atrial waveform can be discerned in this lead. Elsewhere, the overall shape of the P wave is used to infer the atrial abnormality #pwave #pwaveecg #ecg #ekg #ecgcourse #ecgmadeeasy #ecgonline #ecgreading #ecginterpretation #ekgonline #howtoreadecg #pwaveabnormalities #invertedpwave #enlargedpwave #pwavemorphology #cardiology #normalpwave