Hypophosphatemia-Associated Chest Pain
Hypophosphatemia can cause cardiac complications that present with chest pain, including vasospastic angina and pericarditis. [1][2]
Evidence Supporting Cardiac Presentations
A case of Prinzmetal (vasospastic) angina reported recurrent chest pain with electrocardiographic ST-segment elevation after documentation of significant hypophosphatemia (phosphate 1.6 mg/dL), with resolution of vasospastic episodes after phosphate replacement. [1]
Evidence Supporting Pericardial Pain Syndromes
A case report of anorexia nervosa described acute pericarditis with pleuritic chest pain occurring in the setting of hypophosphatemia (phosphorus 0.9 mg/dL), with improvement alongside electrolyte repletion. [2]
Mechanistic Links
Hypophosphatemia has been proposed to contribute to coronary vasospasm through impaired myocardial energy metabolism and endothelial dysfunction. [1]
Clinical Implications
Hypophosphatemia should be considered a potentially reversible contributor to chest pain when symptoms coincide with electrolyte abnormalities, particularly when ischemic-type or inflammatory cardiac syndromes are present. [1][2]
Indirect Confirmation Clues
Documented low serum phosphate in the same time window as ischemic or pericardial symptoms, followed by clinical improvement after phosphate repletion, supports a causal relationship. [1][2]