Mohanchandra Mandal1, Pradipta Bhakta2, Antonio M Esquinas3. 1. Department of Anaesthesiology, Institute of Post Graduate Medical Education & Research, Kolkata, West Bengal, India. 2. Department of Anaesthesiology and Intensive Care, University Hospital Waterford, Waterford, X91ER8E, Ireland. bhaktadr@hotmail.com. 3. Intensive Care Unit, Hospital Morales Meseguer, Murcia, Spain.