Which medication is most likely to negatively impact a client's blood pressure?

Metoprolol is a beta-blocker commonly used to manage hypertension (high blood pressure) and other cardiovascular conditions. While its primary purpose is to lower blood pressure, it can negatively impact blood pressure in certain situations. For example, if a client is taking metoprolol and experiences an abrupt decrease in heart rate, it may lead to hypotension (low blood pressure) as the body's ability to compensate for low cardiac output is diminished.

When a client is already hypotensive or is receiving medications that have similar effects, the addition of metoprolol can further exacerbate this condition. It is crucial for healthcare providers to monitor blood pressure closely in patients taking metoprolol, especially during dosage adjustments or when combined with other antihypertensive medications.

In contrast, the other options listed do not typically pose the same risk for negatively impacting blood pressure in the same way. ASA (aspirin) primarily acts as a blood thinner and is less likely to affect blood pressure directly. Theophylline, used to treat asthma, can lead to increased heart rate or blood pressure in some cases but generally does not have a significant negative impact on blood pressure. Metoclopramide is primarily used for gastrointestinal motility issues and, while it can