ECG
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ECG Questions
- 1.The inspiratory reserve volume:We observe in case of normal breathing
- A.
We observe in case of normal breathing
- B.
Depends on the actual needs of oxygen
- C.
Is the maximum volume of the air we can breath in over the expiratory reserve and tidal volume
- 2.QRS-complex has its origin in
- A.
Repolarization of ventricles
- B.
Depolarization of atria
- C.
Depolarization of ventricles
- 3.The delay of the contraction of ventricles after the contraction of atria is cause by the delay in
- A.
AV node
- B.
SA node
- C.
Septum
- 4.The IRV is 4.20 l and the TV is 0.46 l
- A.
The IVC is 4.66 l
- B.
The IC is 4.66 l
- C.
The IVC is 3,74 l
- 5.Lead III is measured between:
- A.
Left and right wrist
- B.
Right wrist and left ankle
- C.
Left wrist and left ankle
- D.
Left wrist and right ankle
- 6.P-Q Segment has its origin in
- A.
Repolarization of ventricles
- B.
Plato phase of ventricles
- C.
Delay in AV node
- 7.T-wave has its origin in
- A.
Repolarization of ventricles
- B.
Repolarization of atria
- C.
Depolarization of ventricles
- 8.The only way the action potential may go from atria to ventricles is
- A.
The valves of the heart
- B.
Bundle of His
- C.
Skeleton of the heart
- 9.
- A.
Black
- B.
Red
- C.
Yellow
- D.
White
- E.
Green
- 10.The 3 bipolar leads are connected to
- A.
Above left ankle, above right ankle, chest
- B.
Left wrist, right wrist, above left ankle xx
- C.
Left wrist, right wrist, above left ankle xx
- 11.Two adjacent Q peaks are 600 ms apart. Calculate the heart rate.
- A.
100 beats per sec
- B.
60 beats per sec.
- C.
80 beats per sec.
- D.
No answer is correct
- 12.The angle of mean electrical axis of heart is 120 degrees. The entire amplitude of QRS complex in the I. lead is:
- A.
Zero
- B.
Negative
- C.
Positive
- D.
1 mV
- 13.Calculate the mean blood pressure when the systolic blood pressure is SBP = 16 kPa and the diastolic blood pressure is DBP = 10 kPa.
- A.
12kPa
- B.
26kPa
- C.
13kPa
- 14.Determine the angle of the electric axis of the heart if you know that the entire amplitudes (Q+R+S) of leads II and III are the same and positive.
- A.
45˚
- B.
90˚
- C.
60˚
- 15.The mean pressure (MBP) is calculated from the diastolic blood pressure (DBP) and systolic blood pressure (SBP) by the formula
- A.
MBP= DBP+(SBP-DBP) / 3
- B.
MBP = (DBP+SBP) / 2
- C.
MBP = DBP+(SBP-DBP) / 2
- 16.The expiratory reserve volume: B also correct
- A.
We can find by the spirometry measurement
- B.
Is part of the volume remaining in the lung in case of normal breathing
- C.
We can not breathe out
- 17.The P-wave has its origin in
- A.
Repolarization of atria
- B.
Depolarization of atria
- C.
Depolarization of ventricles
- 18.The inspiratory vital capacity:
- A.
Is the maximum volume of the air we can take in breath
- B.
We can calculate as a sum of inspiratory reserve volume (IRV), expiratory reserve volume (ERV) and tidal volume (TV)
- C.
Is a minimum volume needed for body survival
- 19.In a healthy heart the action potential is generated in
- A.
SA - node
- B.
Purkinje fibers
- C.
Septum
- 20.If the transfer of the action potential from the SA node to the AV node is disconnected, the action potential is generated in
- A.
Purkynjee fibers
- B.
Muscle fibers
- C.
AV node
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