Which of the following is a water-soluble vitamin?

A. Alternating current (AC) interference: AC interference is caused by electrical equipment near the EKG machine and appears as uniform, small, rapid spikes. It is not caused by patient movement.
B. Arrhythmia: An arrhythmia refers to an abnormal heart rhythm and is related to cardiac function, not patient movement.
C. Somatic tremor: Somatic tremor is caused by voluntary or involuntary muscle movement, such as a patient moving their arm, which creates artifact on the EKG tracing that appears as irregular, erratic spikes.
D. Interrupted baseline: An interrupted baseline occurs when the electrical connection is lost, often due to a lead falling off, not due to patient movement.

A. Pull the lower eyelid down. Pulling the lower eyelid down creates a pocket for the drops, making it easier to administer them without contacting the eye’s surface directly.
B. Have the patient open their eye using both hands: Using both hands to open the eye may be uncomfortable and unnecessary; the assistant should guide the patient gently.
C. Use a retractor on the eye before administering the drops: Retractors are not typically used for eye drop administration; this can cause discomfort and is not standard practice.
D. Hold the dropper 1 inch away from the surface of the eye: The dropper should be held close enough to the eye to avoid contaminating the eye surface or the dropper, but not so close as to touch the eye.