A 65-year-old patient has just received a blood transfusion. Shortly after the transfusion begins, the patient complains of chills, back pain, and difficulty breathing. What is the most likely cause of these symptoms?

Choice A Reason:

Administering diuretics to increase urine output is not appropriate in this scenario. Diuretics would exacerbate dehydration and further increase serum sodium levels by promoting additional water loss. This approach would worsen the patient’s condition rather than improve it.

Choice B Reason:

Administering desmopressin is a suitable intervention for this patient. Desmopressin is a synthetic analog of vasopressin (antidiuretic hormone) and is used to treat conditions like diabetes insipidus, which can cause symptoms such as excessive thirst, frequent urination, and dehydration. Desmopressin helps to reduce urine output and correct the imbalance of fluids and electrolytes.

Choice C Reason:

Administering intravenous hypotonic saline is appropriate for managing high serum sodium levels and dehydration. Hypotonic saline helps to lower serum sodium levels by diluting the blood and rehydrating the patient. This intervention addresses both the dehydration and the electrolyte imbalance effectively.

Choice D Reason:

Restricting fluid intake to reduce urine output is not appropriate in this case. Fluid restriction would worsen dehydration and could lead to further complications. The patient needs adequate fluid replacement to correct the dehydration and normalize serum sodium levels.

Choice E Reason:

Administering hypertonic saline is not suitable for this patient. Hypertonic saline would increase serum sodium levels further, exacerbating the hypernatremia. This intervention would be counterproductive and could lead to severe complications.

Choice A Reason:

Night blindness, or difficulty seeing in low light, is not a primary symptom of macular degeneration. This condition primarily affects the macula, the central part of the retina responsible for sharp, central vision. Night blindness is more commonly associated with conditions like retinitis pigmentosa or vitamin A deficiency.

Choice B Reason:

Central vision loss is the hallmark of macular degeneration. This condition leads to the deterioration of the macula, causing blurred or lost central vision while peripheral vision remains intact. Patients often report difficulty reading, recognizing faces, and performing tasks that require fine visual detail3.

Choice C Reason:

Peripheral vision loss is not typically associated with macular degeneration. This condition affects the central part of the retina, leaving peripheral vision largely unaffected. Peripheral vision loss is more commonly seen in conditions like glaucoma.

Choice D Reason:

Double vision, or diplopia, is not a characteristic symptom of macular degeneration. This condition affects the clarity of central vision but does not typically cause double vision. Double vision can result from issues with the eye muscles or nerves, such as in cases of strabismus or cranial nerve palsies.