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RU EKG Class 4 11 - RU EKG Use Interpretation Class#4...

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Class #4 February 8, 2011 AV Heart Block and Pacemakers RU EKG Use & Interpretation
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What is the term given to this tracing problem? What is the rate? Artifact 62 bpm
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$ ±± \²R IHPDOH SUHVHQWV WR \RXU RIILFH F²R ´D IOXWWHULQJ VHQVDWLRQµ LQ KHU FKHVW³ 7KLV LV KHU rhythm strip on EKG. What is the rate and rhythm? How would you treat her? NSR at a rate of 72 with 1 PAC Reassurance; if symptomatic, XST
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AV Conduction Blocks y An AV Conduction Block is any obstruction or delay of the normal conduction between the SA node and the Purkinje fibers. y Most commonly occurs between AV node and His bundle y 3 varieties of AV Block: 1 st , 2 nd , 3 rd degree
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Problems in electrical conduction
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First Degree AV Block y All normal except PR interval >.2 sec (1 big block); often seen in athletes and with bradycardia; no treatment required
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First Degree AV Block
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Second degree AV Block Wenckebach y Gradually lengthening PR interval until a QRS complex is dropped. y /RRN IRU ´JURXSHG EHDWLQJµ LQ WKH (.* y No treatment usually required
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Second Degree AV Block - Mobitz y PR interval remains constant
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