A nurse working for a home health agency is teaching a client diagnosed with diabetes mellitus about disease management. Which of the following glycosylated hemoglobin (HbA1c) values should the nurse include in the teaching as an indicator that the client is appropriately controlling their glucose levels?

A. Is used to replace fluid loss.

Isotonic solutions, such as normal saline (0.9% NaCl) and lactated Ringer's solution, are used to replace fluid loss in situations such as dehydration, surgery, trauma, or other conditions where there is a need for fluid resuscitation.

B. Usually do not provide calories.

Isotonic solutions typically do not contain calories. They are designed primarily for fluid replacement and do not contribute to the nutritional needs of the patient.

C. Does not expand intravascular volume.

This statement is incorrect. Isotonic solutions are used to expand intravascular volume. When infused into the bloodstream, isotonic solutions help restore and maintain adequate blood volume. They do not cause significant shifts of fluids between compartments.

D. Mostly do not provide free water.

Isotonic solutions generally do not provide free water. They have the same osmolality as body fluids, meaning that they do not cause a net movement of water into or out of cells, and they maintain the osmotic balance.

E. Has the same osmolality as body fluids.

Isotonic solutions have the same osmolality as body fluids, which means they do not cause a net movement of water into or out of cells. This characteristic makes them suitable for situations where there is a need to expand intravascular volume without causing significant shifts in fluid compartments.

A. Bradycardia is not typically associated with gastrointestinal perforation. Instead, tachycardia may be observed due to the body's response to a potential emergency or shock.

B. Hyperactive bowel sounds are not typically associated with gastrointestinal perforation. In fact, bowel sounds may decrease or become absent in severe cases of peritonitis or abdominal emergencies.

C. Increased blood pressure is not typically associated with gastrointestinal perforation. Hypotension may be observed due to hypovolemia resulting from fluid leakage into the peritoneal cavity.

D. Sudden abdominal pain is a key clinical manifestation of gastrointestinal perforation. The perforation of the stomach or intestines allows the contents to leak into the abdominal cavity, leading to peritonitis. Sudden and severe abdominal pain is a hallmark symptom, often described as sharp, stabbing, and constant.