Acute severe hyperphosphatemia and secondary hypocalcemia after phosphate enema administration in a constipated post-trauma patient recovering from pelvic surgery: a case report.

Severe hyperphosphatemia secondary to phosphate enema administration is a rare but clinically significant event, particularly in patients with renal impairment. We present a case of a 77-year-old male with a history of polytrauma and prolonged immobility, who developed severe hyperphosphatemia and secondary hypocalcemia following rectal administration of a phosphate enema. The case highlights hyperphosphatemia as a potential complication of phosphate absorption and underlines the importance of early recognition of symptoms and prompt treatment.