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 ["B","C","D"]
Explanation
A. Pale yellow urine is typically associated with good hydration; dehydration would likely result in darker urine.
B. Poor skin turgor is a classic sign of dehydration, indicating a lack of adequate fluid in the tissues.
C. Hypotension (low blood pressure) can occur with dehydration due to decreased blood volume.
D. Flat neck veins may indicate a decrease in venous return due to low blood volume associated with dehydration.
E. Bradycardia (slow heart rate) is not typically a finding associated with dehydration; instead, dehydration often leads to tachycardia (increased heart rate) as the body attempts to compensate for low blood volume.