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65.

Pre-requisites for a good ECG recording include all except :
(A) Good contact between skin and electrode
(B) ECG machine should be properly standardized
(C) Patient should hold respiration during recording

(D) Electronic equipment in contact with Patient can produce artefacts

Pathological Q wave in ECG is best described by :
(ಹ) Depth more than 10% of R wave and width more than 1mm
(B) Depth more than 25% of R wave and width more than 1 mm
(C) Depth more than 50% of R wave and width more than 1 mm
(D) None of the above

Technical dextrocardia is caused by :
(^) Right and left arm lead reversal
(B) Right arm and left leg lead reversal
(C) Left arm and right leg lead reversal
(0) Right leg and left leg lead reversal

How will you calculate heart rate from ECG if the patient is in atrial fibrillation?
(^) 1500/R-R interval in number of small squares
(B) 300/R-R interval in number of large squares
(C) Number of QRS complexes in 6 seconds x 10

(D) None of the above methods is accurate

Position of horizontal lead Ve is :
(^) Fifth left intercostal space mid axillary line
൯ Fifth left intercostal space posterior axillary line
(C) Fourth left intercostal space midclavicular line

(D) Fifth left intercostal space anterior axillary line

All are causes of ST segment elevation in ECG except :
(A) Pericarditis (B)_ Early repolarization
(C) Myocardial infarction (D) Subendocardial ischemia

Low voltage complexes in ECG is not seen in:
(^) Children (B) Obesity
(C) Emphysema (D) Pericardial effusion

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