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ECG Made Easy(Part-2)

P wave: P wave denotes atrial contraction. Look for P wave in lead II.  Normal P wave measures 2.5mm tall and 3mm wide. Absent P wave with an irregularly irregular rhythm may indicate Atrial Fibrillation. Tall peaked P wave is called P pulmonale and indicates Right Atrial Enlargement. Broad Biflid P wave is called P mitrale and indicates Left Atrial enlargement. Inverted P wave indicates Atrial ectopic If PR interval is less than 3 small boxes, the origin of ectopic is AV node If PR interval is more than 3 small boxes,the origin is elsewhere from the atrium. PR Interval: It is measured between beginning of P wave to beginning of QRS complex. It represents spread of impulse from SA node to the ventricular tissues. It measures about 3-5 small boxes. The significance of PR interval is diagnosis of heart blocks. Heart Blocks: 1st Degree Heart block: Prolonged PR interval more than 5 small boxes indicate 1st degree Heart block. 2nd Degree Heart block:(Mobitz Type 1): This is characteris...
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My First Intubation

Though I've intubated a few times during my residency it really doesn't count because, I was never alone. My backup with loads of experience was standing right next to me. We also had a videolaryngoscope and a fibreoptic bronchoscope just in case. But once I was out of Medschool, I was all alone, on my own.    I got into my job right the next day of getting registered to the Medical Council (just bragging). My designation was "Emergency Care Physician" in an Emergency Care and Stabilization Centre in Chennai.Chennai as you may know is a large city with a huge population and hence a huge TRAFFIC. In case of any emergency, shifting the patient from the scene to a tertiary care centre costed the valuable 'golden hours' and mortality was pretty high. To overcome this, Govt came up with the idea of Emergency Care Centres scattered within the city,which would serve as stabilization centres and I started my career in one such centre. It was my second week of joining ...
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Identifying Arrhythmias (Part-2)

Tachyarrhythmia: Broadly Tachyarrhythmias are classified based on their origin into two main types. SUPRA VENTRICULAR VENTRICULAR Supraventricular Tachyarrhythmia: As the name implies, the impulse originates above the level of AV node. Sinus Tachycardia: HR more than 100 with upright P wave followed by QRS complex is termed as Sinus Tachycardia. It has a variety of causes and the most probable cause of  each case should be identified. Atrial Fibrillation: Absent P wave with an irregularly irregular rhythm may indicate Atrial fibrillation. The more specific term is Atrial fibrillation with rapid ventricular response when the HR is more than 100. When the patient is connected to an ECG monitor, You will find the heart rate fluctuating to a wide range from 100-160. Atrial Flutter: Atrial flutter can be easily identified on an ECG from the presence of Flutter waves which gives a saw tooth appearance. The baseline could not be identified. PSVT: When the term Paroxysmal Supraventricular ...
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