Cardiac Arrhythmias – Supraventricular tachycardia and Ventricular fibrillation — SVT. A rapid, regular tachycardia in which the pacemaker is found in the sinus node, the atria, or the atrioventricular junction, i.e., above the ventricles Distinguishing features of SVT with wide QRS from VT — Triphasic QRS – rsR...
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BRADYARRHYTHMIAS Sinus BRADYCARDIA When the sinus rate is less tha – 60 beats per minute it is called sinus bradycardia,Trained athletes and people doing hard labour, elderly individuals may have resting rate less than 50 beats per mmute. The pacemaker of the heart is the sinoatrial node (SA node)....
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Arrhythmia Sick Sinus Syndrome The sick sinus syndrome is a presentation with dizziness, confusion, fatigue, syncope, and heart failure caused by SA node dysfunction. Several electrocardiographical abnormalities caused by a malfunction of the sinoatrial node of the heart, in which there are episodes of tachycardia alternating with episodes of heart...
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AV CONDUCTION DISORDERS When AV nodal block occurs the His bundle can generate a heart rate of 40 – 60 beats per minute with normal QRS complexes. If the distal His Purkinje system takes over then the heart rate generated is 25 – 45 beats per minute with wide...
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Atrial fibrillation TACHYARRHYTHMIAS Indications of DC Cardioversion — Cardiovasculer examination, RRHYTHMIAS, Sinus Tachycardia Atrial fibrillation is recognized by : ·Absence of P waves ·P waves re laced by fibrillatory waves or undulating baseli~at frequency 350-600 perminute R waves irregularly irregular and of varying amplitude QRS normal. ...
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TACHYARRHYTHMIAS PSVT Paroxysmal supraventricular Tachycardia DIAGNOSIS with Treatment SINUS TACHYCARDIA — Heart rate exceeds 100 beats/min Gradual onset and offset Normal PQRST. PSVT Proxysmal supraventricular Tachycardia — Features of PSVT There is sudden onset and offset of very fast...
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Cardiac Arrhythmias Types and Definitions Mechanisms with Methods for Diagnosis Arrhythmias Mechanisms of arrhythmias Problems of impulse formation i.e. automaticity. Problems of impulse conduction i.e. Block I Reentry. Methods for Detecting Arrhythmias Is to monitor the ECG, Transtelephonic monitoring, Holter monitoring, invasive ECG recordings. Transtelephonic monitoring Cardiac monitoring in...
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The cardiac axis is the resultant direction of the flow of current of depolarization through the heart. The normal axis of heart is the range from –30 degree to +90 degree, In Heart with normal axis Lead I and Lead III will have positive QRS, in Left Axis Deviation Lead...
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Sinus Tachycardia and Sinus Bradycardia General idea with definition and causes and Treatment Sinus Tachycardia Definition — Sinus tachycardia is a heart rate more than 100 beats/min. Causes of Sinus Tachycardia Fever, thyrotoxicosis, exercise, anaemia, lack of activity, hypertension etc. Drugs like Sorbitrate, .Nifedipine, nasal decongestants drops, atropine...
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Introduction of ECG a Basic Idea about ECG with general description of 12 Leads Connect leads: . RA (Red) to right arm • RL (Black) to right leg · LA (Yellow) to left arm · LL (Green) to left leg Connect the precordial leads Vi – V 6...
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