A nurse is interpreting the ECG strip of a client who has bradycardia. Which cardiac components should the nurse identify as the role of the P wave?
Early ventricular repolarization
Atrial depolarization
Slow repolarization of ventricular Purkinje fibers
Ventricular depolarization
The Correct Answer is B
A. Early ventricular repolarization is represented by the T wave, not the P wave.
B. The P wave represents atrial depolarization, which is the electrical activity that triggers the contraction of the atria.
C. Slow repolarization of ventricular Purkinje fibers is represented by the T wave, not the P wave.
D. Ventricular depolarization is represented by the QRS complex, not the P wave.
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Correct Answer is D
Explanation
A. Presbyopia refers to age-related difficulty in seeing close objects due to loss of elasticity in the lens, not distance vision.
B. Astigmatism is a condition caused by an irregular curvature of the eye, leading to blurred vision at any distance.
C. Hyperopia (farsightedness) is the inability to see close objects clearly, not distant ones.
D. Myopia (nearsightedness) is the condition where a person cannot see objects at a distance clearly, making it the correct term for this finding.
Correct Answer is C
Explanation
A. A BMI of 26 is not classified as obese; obesity typically starts at a BMI of 30.
B. Underweight is defined as a BMI less than 18.5, which does not apply to this client.
C. A BMI of 26 falls within the overweight category, which is defined as a BMI between 25 and 29.9.
D. A healthy weight is classified as a BMI between 18.5 and 24.9, which does not include a BMI of 26.