Fig. 1From: Effect of regulating airway pressure on intrathoracic pressure and vital organ perfusion pressure during cardiopulmonary resuscitation: a non-randomized interventional cross-over studyStudy protocol. VF, ventricular fibrillation; STD, standard; CPR, cardiopulmonary resuscitation; ACD, active compression decompression; ITD, impedance threshold device; ITPR, intrathoracic pressure regulatorBack to article page