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Exam (elaborations)

MAYO ECG Exam Questions Correctly Solved (A+ Pass)

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  • MAYO ECG
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  • MAYO ECG

MAYO ECG Exam Questions Correctly Solved (A+ Pass) PR interval - Answers - 0.12-0.20 QRS complex - Answers - 0.04- <0.12 QT interval - Answers - <0.44 sec SA node - Answers - • Normal pacemaker of heart • Initiates an impulse • Intrinsic rate of 60-100 BPM Intra-Atria...

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  • October 20, 2024
  • 2
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • MAYO ECG
  • MAYO ECG
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MAYO ECG Exam Questions Correctly
Solved (A+ Pass)
PR interval - Answers -✔✔ 0.12-0.20

QRS complex - Answers -✔✔ 0.04- <0.12

QT interval - Answers -✔✔ <0.44 sec

SA node - Answers -✔✔ • Normal pacemaker of heart
• Initiates an impulse
• Intrinsic rate of 60-100 BPM

Intra-Atrial & Nodal Pathways - Answers -✔✔ Located in atrial tissue between SA and
AV nodes
• Conducts impulse from SA node - Atrial musculature - AV node
• Anterior, middle and posterior tracts

Atrioventricular (AV) Node - Answers -✔✔ Delays impulse from atria
• Allows for ventricular filling
• Protective mechanism against rapid supraventricular impulses

Junctional Tissue - Answers -✔✔ Tissue in lower AV node
• Back-up pacemaker
• Intrinsic rate of 40-60 BPM

Bundle of HIS/Bundle Branches - Answers -✔✔ Bundle of HIS connects AV node to
right and left bundle branches
• Right bundle carries impulse to right ventricle; left bundle carries impulse to left
ventricle

Ventricular Tissue - Answers -✔✔ Back up pacemaker
• Intrinsic rate 20-40 BPM

Purkinje system - Answers -✔✔ Distal to the bundle branches
• Rapidly conducts impulses to ventricular sub-endocardial layers

First degree block - Answers -✔✔ prolonged PR interval
"If the R if far from the P then you have first degree"

second degree type 1 blcok - Answers -✔✔ longer PR until beat is dropped

second degree type 2 - Answers -✔✔ constant PR interval

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