Clarifications to ¿First described case of coma triggered by retrograde venous air embolism: an exceptional but potentially life-threatening situation¿ M. León Ruiz; J. Benito-León; M.Á. García-Soldevilla; E. García-Albea Ristol; J.A. Arranz Caso;

Position is important: retrograde air embolism after central venous catheter removal S. Balboa; R. Albillos; R. Yano; D. Escudero;

Ischaemic stroke in a post-surgical patient after replacement of a parenteral nutrition bag L. España Fuente; R.E. Méndez Redondo; N. Gutiérrez Corral; D. Fernández Martínez;