Causative factors for the development of delirium include which of the following? Select all that apply.

Choice A reason: Increased serum chloride is not a typical finding associated with syndrome of inappropriate antidiuretic hormone (SIADH). In SIADH, the body's regulation of water is impaired, leading to water retention and dilutional hyponatremia. Serum chloride levels might not be significantly affected and are not the primary laboratory indicator for this condition.
Choice B reason: Elevated hematocrit is not directly related to SIADH. Hematocrit levels reflect the proportion of red blood cells in the blood. In SIADH, the main issue is water retention leading to dilutional hyponatremia, rather than changes in red blood cell concentration. Therefore, hematocrit levels are not a key laboratory finding in this disorder.
Choice C reason: Decreased serum sodium, or hyponatremia, is a hallmark finding in SIADH. The excessive release of antidiuretic hormone (ADH) leads to water retention, diluting the sodium in the blood and resulting in low serum sodium levels. This hyponatremia can cause symptoms such as disorientation, headache, and muscle cramps, as seen in the patient. Monitoring and correcting serum sodium levels is crucial in the management of SIADH.
Choice D reason: Low urine specific gravity is not expected in SIADH. In fact, patients with SIADH typically have a high urine specific gravity due to the excessive release of ADH, which causes the kidneys to reabsorb water and concentrate the urine. This concentrated urine reflects the body's attempt to reduce water excretion in response to elevated ADH levels. Therefore, low urine specific gravity would not be an initial laboratory finding in this condition.

Choice A reason: Weight loss is indicative of hypermetabolism caused by excessive thyroid hormone production. The increased metabolic rate leads to higher energy consumption, resulting in unintentional weight loss even if the patient maintains or increases their food intake.
Choice B reason: Begins to cry when he tells you he recently lost his wife. Emotional responses, such as crying, can be associated with personal loss and grief but are not directly linked to hypermetabolism or excess thyroid hormone. This statement reflects the patient's emotional state rather than a physiological manifestation of hyperthyroidism.
Choice C reason: Hyperactive bowel sounds are a common manifestation of hypermetabolism due to hyperthyroidism. The increased metabolic rate accelerates gastrointestinal motility, resulting in hyperactive bowel sounds and sometimes diarrhea.
Choice D reason: 1+ pitting edema noted in bilateral lower extremities is related to fluid retention and heart failure rather than hypermetabolism. Edema is not a typical manifestation of hyperthyroidism and is more indicative of cardiovascular or renal issues.
Choice E reason: A heart rate of 124 (tachycardia) is a common finding in patients with hyperthyroidism. Excess thyroid hormones increase the heart rate and cardiac output, leading to symptoms such as palpitations and tachycardia.
Choice F reason: Bounding radial pulses are indicative of increased cardiac output and stroke volume, which are common in hyperthyroidism due to the hypermetabolic state induced by excess thyroid hormones. This leads to strong and forceful pulses.
Choice G reason: Anxious and restless behavior is a manifestation of the increased adrenergic activity associated with hyperthyroidism. Excess thyroid hormones stimulate the nervous system, leading to symptoms such as anxiety, restlessness, and irritability.
Choice H reason: Diminished breath sounds with fine crackles in the posterior bases are not directly related to hypermetabolism. These findings are more indicative of fluid overload or heart failure, which can occur in patients with Graves' disease, especially if their heart failure is not well managed.