ECG

Question 1

normal range for PR interval

Answer 1

120-200ms (3-5 small squares)

Question 2

normal range for QRS complex

Answer 2

80 to 110 ms

Question 3

QRS complex represents

Answer 3

the spread of a stimulus through the ventricles

Question 4

PR interval represents

Answer 4

the time between atrial depolarization and ventricular depolarization

Question 5

QT interval represents

Answer 5

the time it takes for the electrical system to fire an impulse through the ventricles and then recharge

Question 6

QT interval normal range

Answer 6

350–450 ms in males and 360–460 ms in females

Question 7

STEMI

Answer 7

the most serious type of heart attack where there is a long interruption to the blood supply .This is caused by a total blockage of the coronary artery, which can cause extensive damage to a large area of the heart.

Question 8

non STEMI

Answer 8

type of heart attack involving partial blockage of one of the coronary arteries, causing reduced flow of oxygen-rich blood to the heart muscle.

Question 9

axis deviation

Answer 9

does not follow the axis properly due to maybe hypertrophy or atrophy or rotations

Question 10

what extra info do the augmented limb leads give u (aVR, aVF, aVL)

Answer 10

give u 3 extra views of events

Question 11

precordial chest leads V1-6

Answer 11

look at the same events but in horizontal or transverse plane

Question 12

limb leads do what

Answer 12

look at the spread of depolarisation and depolarisation from 6 angles in the frontal plane

Question 13

rhythm strip tells you

Answer 13

calibrating pulse is o.2sec which is one large square. can count the R waves in 30 large squares(6sec) and multiply by 10 which should give u beats per min. 60-100bpm is normal, below 60 Is bradycardia, above 100 is tachycardia