What is the rate on the rhythm strip in the image below?
90
110
73
50
The Correct Answer is A
A. To determine the heart rate from a rhythm strip, you can count the number of R-R intervals in a set time frame (typically 6 seconds) and multiply by 10 to convert to beats per minute. If the rhythm is regular, you can also use the 300 method by dividing 300 by the number of large squares between R waves. In this case, the rate is calculated to be 90 beats per minute.
B. A heart rate of 110 beats per minute would be classified as tachycardia and is not supported by the observed intervals.
C. A heart rate of 73 beats per minute would be a normal resting heart rate but does not match the calculation from the rhythm strip.
D. A heart rate of 50 beats per minute would indicate bradycardia, which is not reflected in this rhythm strip.
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Correct Answer is D
Explanation
A. Flexion refers to bending the joint, which does not apply when turning the palm down.
B. Supination is the movement of turning the palm up, which is the opposite of what is being tested here.
C. Rotation refers to the circular movement around a central point, but it does not specifically describe the action of turning the palm down.
D. Pronation is the movement of turning the palm down, which is exactly what the client is doing when asked to perform this maneuver.
Correct Answer is ["B","C","E"]
Explanation
A. The diaphragm of the stethoscope is used for high-pitched sounds, such as lung and normal heart sounds, not low-pitched sounds.
B. The binaural (earpieces) should fit snugly in the ears to ensure proper sound transmission and clarity.
C. Short tubing provides more accurate sounds by minimizing sound distortion, making it ideal for clinical use.
D. The bell of the stethoscope is used for low-pitched sounds, such as heart murmurs, not high-pitched sounds.
E. The stethoscope works by blocking out environmental sounds to help the user focus on internal body sounds.