The nurse recognizes that the patient who might have the most difficult time coping with a stressor is the one who:

A. One of the primary purposes of inserting an NG tube is to decompress the stomach by removing gastric contents. In the case of abdominal distention and severe vomiting, excess gas and fluid accumulation in the stomach can contribute to discomfort and further vomiting. The NG tube provides a way to suction out these contents, relieving pressure and reducing symptoms.
B. NG tubes can also be used to administer medications directly into the stomach. This route is particularly useful when a client is unable to take medications orally due to vomiting or other gastrointestinal issues. Medications can be crushed and dissolved in liquid form before being administered through the NG tube.
C. In some situations, such as when assessing for gastrointestinal bleeding or checking for tube placement, it may be necessary to determine the pH of gastric secretions. Gastric aspirate obtained through the NG tube can be tested for acidity, which can help confirm that the tube is correctly positioned in the stomach and provide information about the client's digestive function.
D. While NG tubes can be used to supply nutrients via tube feedings, this is not typically the primary rationale for their use in the acute situation described (abdominal distention and severe vomiting). However, in cases where a client is unable to tolerate oral intake due to their condition, tube feedings can be administered through the NG tube to provide essential nutrients and maintain nutritional status.

D. 0.9% sodium chloride (0.9% NaCl): This solution, also known as normal saline, is isotonic and contains the same concentration of sodium as extracellular fluid. It is the most appropriate choice for initial fluid resuscitation in hypovolemia due to severe bleeding because it rapidly expands intravascular volume, replaces sodium losses, and helps restore circulating blood volume.
A. This solution contains dextrose (glucose) and a small amount of sodium chloride. It provides some glucose for energy but has a lower sodium concentration compared to isotonic solutions like normal saline. While it may be used in certain situations, such as to provide maintenance fluids or correct mild dehydration, it is not the first choice for fluid resuscitation in hypovolemia due to severe bleeding because it does not adequately replace lost volume.
B. 3% sodium chloride (3% NaCl): This solution is hypertonic and has a high sodium concentration. It is not typically used for initial fluid resuscitation in hypovolemia due to severe bleeding. Hypertonic saline solutions like 3% NaCl are more commonly used in specific situations such as severe hyponatremia or cerebral edema.
C. 5% dextrose in water (D5W): This solution contains only dextrose and water and is isotonic until the dextrose is metabolized, after which it becomes hypotonic. D5W is not suitable for fluid resuscitation in hypovolemia due to severe bleeding because it does not provide adequate sodium or volume replacement.