A nurse is teaching about how to suppress lactation with a client who is postpartum and bottle feeding their newborn. Which of the following instructions should the nurse include in the teaching?

A. The client's heart rate increases by 10/min: An increase in heart rate upon changing positions may occur as a compensatory mechanism to maintain blood pressure, but it is not indicative of orthostatic hypotension. Orthostatic hypotension is characterized by a decrease in blood pressure upon assuming an upright position.
B. The client's systolic blood pressure decreases by 25 mm Hg: Orthostatic hypotension is defined as a decrease in systolic blood pressure of 20 mm Hg or more, or a decrease in diastolic blood pressure of 10 mm Hg or more, within 3 minutes of standing up from a supine position. Therefore, a decrease in systolic blood pressure by 25 mm Hg upon changing positions is consistent with orthostatic hypotension.
C. The client's diastolic blood pressure increases by 10 mm Hg: Orthostatic hypotension typically involves a decrease in both systolic and diastolic blood pressure upon assuming an upright position. An increase in diastolic blood pressure is not consistent with orthostatic hypotension.
D. The client reports heart palpitations: Heart palpitations may occur due to various reasons, such as anxiety or cardiac arrhythmias, but they are not specific to orthostatic hypotension. While orthostatic hypotension may cause symptoms like dizziness or lightheadedness, heart palpitations are not typically associated with this condition.

A. Hearing loss: While digoxin toxicity can affect various organ systems, including the auditory system, resulting in symptoms such as tinnitus (ringing in the ears), hearing loss is not a typical manifestation of digoxin toxicity.
B. Insomnia: Insomnia is not a common symptom of digoxin toxicity. Clients with digoxin toxicity are more likely to experience neurological symptoms such as confusion, visual disturbances, or changes in mental status.
C. Tachycardia: Digoxin toxicity can cause arrhythmias, but it typically presents with bradycardia rather than tachycardia. Bradycardia is a hallmark sign of digoxin toxicity due to its negative chronotropic effect on the heart.
D. Blurred vision: Blurred or yellow-tinted vision is a classic symptom of digoxin toxicity, often described as "yellow halos" around lights. Visual disturbances occur due to the drug's effects on the optic nerve and can progress to more severe manifestations, such as changes in color vision or photophobia. Therefore, blurred vision is a key indicator of digoxin toxicity and requires prompt assessment and intervention.