Table 1

Connecting two patients to one ventilator.

  • Emergency situation, no available ventilators

  • Mechanical ventilator with internal flow sensor

  • Double ventilation circuit

  • Passed leakage test

  • Double patient ventilation successfully simulated with two test lungs/balloons in the desired ventilatory settings range

  • Deeply sedated or paralysed patients with similar PBW

  • Set PCV and PEEP with driving pressure ≤15 cmH2O

  • Switch off inspiratory trigger

Starting procedures:
  • Connect first patient.

  • Assess Vt and lung mechanics (plateau pressure, static compliance, total PEEP), maintaining the second wye occluded

  • Connect second patient

  • Clamp first patient’s ET during an expiratory hold and perform lung mechanics assessment on second patient (plateau pressure, static compliance, total PEEP)

  • Set longer inspiratory ramp time if desired FiO2 cannot be reached

Monitoring and alarms:
  • Set alarm on Vt and FiO2 at least

  • Monitor SpO2 at least

  • Monitor EtCO2 whenever possible

  • Perform ABG regularly

Provide another ventilator as soon as possible
  • ABG, arterial blood gas test; ET, endotracheal tube; EtCO2, end-tidal carbon dioxide; FiO2, fraction of inspired oxygen ; PBW, predicted body weight; PCV, pressure-controlled ventilation; PEEP, positive end-expiratory pressure; SpO2, peripheral capillary oxygen saturation; Vt, tidal volume.