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EXAM REVISIONMain topics covered – Cardiology and Cancer (CLASP)Topic- Cardiology (ECG) Which of the following would be the duration for a normal PR interval? A 10ms B 180ms C 250ms D 300ms E 210msAnswer – BExplain – The PR interval is measured from the onset of P wave to the start of QRS complex. I...

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EXAM REVISION Main topics covered – Cardiology and Cancer (CLASP) Topic- Cardiology (ECG) 1. Which of the following would be the duration for a normal PR interval? A B C D E

10ms 180ms 250ms 300ms 210ms

Answer – B Explain – The PR interval is measured from the onset of P wave to the start of QRS complex. It reflects conduction through the AV node. The interval should be between 120-200ms in duration (3-5 small squares)

2. 52- year old man comes in saying he felt dizzy and out of breath this morning. He has a history of high blood pressure and has been taking lisinopril. You look at his ECG. What is the rhythm?

A B C D E

Ventricular fibrillation Atrial flutter Atrial fibrillation Sinus rhythm Sinus arrhythmia

Answer – C AF occurs when there is disorganized electrical activity in the atria. The ECG shows - no P waves, irregularly irregular QRS and ragged baseline. Why notA- Should have with irregular random baseline with no clear discernable waveforms. B- Should have a regular, usually narrow complex tachycardia and a saw-tooth baseline D- Should have had a p wave for every QRS and PR 50years Breastfeeding Hormone therapy Late age of menopause

Answer – C Explain - making milk limits breast cells' ability to act abnormally. most women have fewer menstrual cycles when they're breastfeeding, which means lower estrogen levels

References 1. https://rebelem.com/rebel-review/rebel-review-29-coronary-anatomy-ecgleads/coronary-anatomy-ecg-leads/ 2. https://en.wikipedia.org/wiki/Psammoma_body 3. Colorectal cancer lecture (Dr. Shaun Walsh)- GI block Year 1...