86 year old male with multiple comorbidities including a low EF was admitted to our hospital with fracture neck femur and was to undergo a cemented bipolar hemiarthroplasty. After optimization and taking a well-informed high risk consent, the patient was given PNS guided Lumbar plexus and Sciatic block. He remained hemodynamically stable till 5 min of cementing with high viscosity Polymethymethacrylate cement. There was sudden cardiovascular collapse which failed to show sustained return of spontaneous circulation inspite of all measures and lead to the death of the patient after 3 hours