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Level 39

CVRR 10 - 11


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Rhythm, conduction intervals, cardiac axis
The conventional procedure for reporting an ECG. [_______], [_______], [_______], QRS complex, ST segment and T wave
QRS complex, ST segment and T wave
The conventional procedure for reporting an ECG. Rhythm, conduction intervals, cardiac axis, [_______], [_______] and [_______]
Left hip, right shoulder
When setting up a lead II ECG, the positive electrode goes on the [_______], and the negative electrode goes on the [_______]
Right hip
In setting up an ECG, the earth wire is typically attached to the [_______], though it makes no difference to the recording
Plethysmograph
An instrument for measuring changes in volume within an organ or whole body
Closure of the atrioventricular valves
The cardiac event creating the first heart sound, 'lub'
Closure of the semilunar valves
The cardiac event creating the second heart sound, 'dub'
Positive
An amplifier 'moves' the vantage point of an ECG by virtually adding another [_______] wire
+40mV
At what mV level is full depolarisation achieved?
Peak of the QRS complex
The point on an ECG trace at which the first heart sound, 'lub', is heard
Peak of the T wave
The point on an ECG trace at which the second heart sound, 'dub' is heard
200 ms
The length of time, in ms, that a big square represents on an ECG
40 ms
The length of time, in ms, that a small square represents on an ECG
Extra-systole
A term used to describe an 'extra' heart beat caused by a non-pacemaker cell of the heart randomly depolarising
300/R-R interval
The formula for calculating heart rate from an ECG
3-5
The normal PR interval (small squares)
3
The normal QRS duration (small squares)
120-200
The normal PR interval (ms)
120
The normal QRS duration (ms)