21293422
Descripción
Test por Aaron Fried, actualizado hace más de 1 año
|
Creado por Aaron Fried
hace más de 4 años
|
|
Pregunta 1
Pregunta
Which answer best defines a biopotential?
Respuesta
-
An electrical gradient in living cells.
-
Kinetic energy in an organism.
-
All of the things a human can do on their lifetime.
-
The ions in a cell.
Pregunta 2
Pregunta
Excitable tissue is defined by its ability to
Respuesta
-
Respond to changes in the environment.
-
Generate electricity.
-
Create an action potential
-
All of these are true.
Pregunta 3
Pregunta
Which series of events in the cardiac cycle occurs first?
Respuesta
-
Electrical
-
Mechanical
Pregunta 4
Pregunta
What is the benefit of a 12-lead ECG? In other words, why isn’t one lead sufficient?
Respuesta
-
Multiple leads provide a 3 dimensional image of the electrical activity of the heart.
-
Each additional lead duplicates and verifies the others.
-
There is no benefit.
Pregunta 5
Pregunta
When reading an ECG the vertical axis is calibrated in [blank_start]millivolts[blank_end] while the horizontal axis is calibrated in [blank_start]seconds[blank_end].
Respuesta
-
millivolts
-
seconds
-
millivolts
-
seconds
Pregunta 6
Pregunta
What wave on an ECG indicates depolarization of the atria?
Respuesta
-
P wave
-
QRS Complex
-
T wave
-
PQ interval
-
QT interval
Pregunta 7
Pregunta
What portion of an ECG indicates the time it takes for an electrical impulse to reach the ventricles?
Respuesta
-
P wave
-
QRS Complex
-
T wave
-
PR interval
-
QT interval
Pregunta 8
Pregunta
Which of the following is not represented by a specific wave on a typical electrocardiogram?
Respuesta
-
depolarization of the atria
-
repolarization of the atria
-
depolarization of the ventricles
-
repolarization of the ventricles
Pregunta 9
Pregunta
Which happens first?
Respuesta
-
depolarization of the atria
-
depolarization of the ventricles
Pregunta 10
Pregunta
A positive T-wave is generally an indication of a cardiac abnormality.
Respuesta
-
True
-
False
Pregunta 11
Pregunta
When referring to cardiac rhythm, what does the term irregular refer to?
Respuesta
-
No R-R interval differs from any other R-R interval by more than 0.12 second.
-
No R-R interval differs from any other R-R interval by more than 0.06 second.
-
Less than 75 beats in one minute.
-
More than 75 beats in one minute.
Pregunta 12
Pregunta
Given the following information, determine the heart rate as precisely as the rules allow.
Heart rhythm is irregular
There are 6 R-waves in 6-inch tracing
There are 6.7 R-R intervals in 6-inch tracing
Heart rate is: [blank_start]55[blank_end] bpm
Respuesta
-
55
-
56
-
57
-
58
-
59
-
60
-
61
-
62
-
63
-
64
-
65
-
66
-
67
-
68
-
69
-
70
Pregunta 13
Pregunta
If the R-R interval on an ECG tracing increases, heart rate must be:
Respuesta
-
increasing.
-
decreasing.
Pregunta 14
Pregunta
During a cardiac cycle, which valves close first?
Respuesta
-
Atrioventricular (AV) valves
-
Semilunar (SL) valves
Pregunta 15
Pregunta
The semilunar valves close when ventricular pressure:
Respuesta
-
rises
-
falls
Pregunta 16
Pregunta
If the amplitude of a pulse wave increases this would be a rough in indication that stroke volume is:
Respuesta
-
increasing
-
decreasing
¿Quieres crear tus propios Tests gratis con GoConqr? Más información.