A charge nurse is reviewing the status of patients in the critical care unit. Which patient should the charge nurse notify the organ procurement team to evaluate for possible organ donation?

Choice A reason:

While preparing the gastrointestinal tract for enteral feedings is important, it is not the primary reason for administering famotidine. Famotidine is typically used to reduce gastric acid production, not to prepare the GI tract for feedings.

Choice B reason:

Increasing the motility of the gastrointestinal tract is not the primary function of famotidine. Famotidine is an H2 receptor antagonist that works by decreasing the production of stomach acid.

Choice C reason:

Keeping the gastrointestinal tract functioning normally is a broad statement and does not specifically address the reason for administering famotidine. The drug's role in preventing stress ulcers is more relevant to the patient's current condition.

Choice D reason:

Famotidine is used to prevent stress ulcers, which can occur in critically ill patients, including those on mechanical ventilation. The stress of illness and mechanical ventilation increases the risk of developing gastric ulcers, and famotidine helps reduce this risk by decreasing gastric acid secretion.

Choice A reason:

Hypoxia not responsive to oxygen therapy is a hallmark early sign of ARDS. ARDS is characterized by acute onset of hypoxemia that does not improve with supplemental oxygen. This refractory hypoxemia is due to severe inflammation and increased permeability of the alveolar-capillary barrier, leading to pulmonary edema and impaired gas exchange.

Choice B reason:

Elevated lactate levels can indicate tissue hypoxia and metabolic stress, which are concerning findings in critically ill patients. However, elevated lactate is not specific to ARDS and can be seen in various conditions, including sepsis and shock. It is not the primary early indicator of ARDS.

Choice C reason:

Metabolic alkalosis is not typically associated with ARDS. ARDS usually involves respiratory failure, which may lead to respiratory acidosis. Metabolic alkalosis can occur in other conditions, such as excessive loss of gastric acid or diuretic use, but it is not an early sign of ARDS.

Choice D reason:

Severe, unexplained electrolyte imbalance can occur in critically ill patients but is not specific to ARDS. Electrolyte imbalances can result from various factors, including fluid shifts, renal dysfunction, and medication effects. These imbalances do not serve as an early diagnostic indicator of ARDS.