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GATE 2026 BM – Question 44

Sensors and Bioinstrumentation · Biopotentials and Electrodes · 2 marks · Multiple choice

Match ECG waveforms X,Y,Z in Panel 1 with (i) normal condition, (ii) atrial flutter, (iii) atrioventricular block.

Diagram for GATE 2026 BM question 44
  1. X–i,Y–iii,Z–ii
  2. X–i,Y–ii,Z–iii
  3. X–ii,Y–i,Z–iii
  4. X–ii,Y–iii,Z–i

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Show answer and explanation

Correct answer: (A) X–i,Y–iii,Z–ii

Explanation

X has the ordinary repeating P–QRS–T relationship and is matched to normal rhythm. Y shows impaired atrioventricular conduction in the schematic, matched to AV block. Z has repeated sawtooth-like atrial activity between QRS complexes, characteristic of atrial flutter. Thus X–i,Y–iii,Z–ii, A.

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