Percutaneous transtracheal ventilation: effects of a new oxygen flow modulator on oxygenation and ventilation in pigs compared with a hand triggered emergency jet injector

A bench study of ventilation via two self‐assembled jet devices and the Oxygen Flow Modulator in simulated upper airway obstruction

“…In a completely obstructed upper airway, devices providing a Venturi-assisted expiration can be expected to achieve a higher minute volume than is known for flow splitter devices, such as the Oxygen Flow Modulator (OFM; Cook Medical, Bloomington, IN, USA), a commercially available emergency tool for transtracheal oxygenation [12]. We tested these two hypotheses in vitro in a mechanical lung model and compared two self-made devices made from standard three-way stopcocks to the OFM.…”

Successful Transtracheal Lung Ventilation Using a Manual Respiration Valve

“…10,11 The equipment available for transtracheal ventilation permits "active" or forced inspiration, but allows only passive expiration, mainly through the patient's proximal airways cephalad around the transtracheal cannula and, to a much lesser degree, through the narrow transtracheal cannula itself. [12][13][14] Risks therefore include kinking of the transtracheal part of the cannula as well as barotrauma due to outflow airway obstruction. 15,16 Under experimental conditions, 10-gauge cannulas were shown to be effective in pigs with blocked upper airways without expiratory aid for a period of 15 min.…”

Percutaneous transtracheal emergency ventilation with a self‐made device in an animal model

“…After recording stable cardiorespiratory parameters and an endtidal CO 2 tension at 32–36 mmHg for at least 15 min, the tracheal tube was disconnected from the ventilator and the cuff deflated. A PEEP valve allowing exhalation at an airway pressure of 20 cmH 2 O, was connected to the tracheal tube, simulating a situation of partial upper airway obstruction (6).…”