What assessment should the nurse make before administering beta-adrenergic blocking agents?

A) Excretion:
This is the correct answer. The kidneys play a crucial role in the excretion of drugs and their metabolites from the body. After drugs undergo metabolism in the liver or other tissues, the resulting metabolites are often water-soluble and can be filtered by the kidneys into the urine. This process helps eliminate drugs and their byproducts from the body, preventing their accumulation and potential toxicity.

B) Absorption:
Absorption refers to the movement of drugs from the site of administration into the bloodstream. While the kidneys do not directly facilitate drug absorption, they may indirectly influence drug absorption by regulating blood flow and systemic circulation.

C) Metabolism:
Metabolism, or biotransformation, involves the enzymatic alteration of drugs into metabolites, which are often more water-soluble and easier to excrete. While the liver is the primary site of drug metabolism, the kidneys do not play a direct role in drug metabolism.

D) Distribution:
Distribution refers to the movement of drugs from the bloodstream to various tissues and organs in the body. While the kidneys do not directly influence drug distribution, changes in renal function can affect drug distribution by altering blood flow and plasma protein binding. However, the primary role of the kidneys in pharmacokinetics is excretion, not distribution.

A) Decreased bowel sounds:
While diarrhea can lead to changes in bowel function, such as increased frequency and urgency, it typically does not cause decreased bowel sounds. In fact, hyperactive bowel sounds may be present in some cases of diarrhea due to increased gastrointestinal motility and peristalsis as the body attempts to expel excess stool.

B) Dehydration:
This is the correct answer. Diarrhea can result in fluid and electrolyte losses, leading to dehydration if not adequately managed. Common symptoms of dehydration include increased thirst, dry mucous membranes, decreased urine output, dark urine, fatigue, weakness, and dizziness. In severe cases, dehydration can lead to hypovolemic shock, a life-threatening condition requiring immediate medical attention.

C) Rigid abdomen:
While abdominal discomfort and cramping are common symptoms of diarrhea, a rigid abdomen is not typically associated with uncomplicated cases of diarrhea. However, severe abdominal pain, distention, and rigidity may indicate underlying complications such as bowel obstruction or peritonitis, which require urgent medical evaluation.

D) Hypothermia:
Hypothermia, or abnormally low body temperature, is not a typical finding in clients with diarrhea. In fact, diarrhea is more commonly associated with fluid and electrolyte imbalances that can lead to hyperthermia (elevated body temperature) due to dehydration and inflammatory responses. However, hypothermia may occur in severe cases of dehydration or sepsis, but it is not a direct consequence of diarrhea itself.