A rare presentation of bone cement implantation syndrome as hypertensive anaphylaxis: A diagnostic and management dilemma.

Background: Bone cement implantation syndrome characteristically involves acute alterations in the function of respiratory and cardiovascular systems. We present a case report of cement reaction with unusual presentation, that is, hypoxia, hypertension and tachycardia. A 74-year-old hypertensive male on regular medications sustained a slip and fall, presented with a right intertrochanteric neck of femur fracture, now posted for cemented hemiarthroplasty. Intraoperatively, after applying bone cement, the patient developed sweating, dyspnoea, bilateral wheezing and tachypnoea and desaturation of up to 80%-84%. Respiratory symptoms were associated with tachycardia (140-160 bpm) and hypertension (220/110 mm Hg). The surgeon was alerted about the event, the patient was reassured, and respiration was assisted with positive pressure ventilation with supplementation of 100% oxygen.

Discussion: Several mechanisms have been proposed, such as the toxic effect of systemically absorbed methyl methacrylate, exothermic reaction, fat and marrow embolism, high marrow pressure during cementing and anaphylactic reaction. The administration of adrenaline, which can worsen the clinical picture, is the mainstay in managing anaphylaxis.

Conclusion: The association of hypertension and tachycardia with bone cement implantation syndrome, previously not reported, can have distinct pathomechanisms and cause a diagnostic and management dilemma.