Article Figures & Data
Figures
- Fig. 1.
Nebulizers tested. From right to left: Aerogen Solo, Maquet Ultrasonic model N06302595E400E, Salter 8900, and Hudson Updraft II Opti-Neb.
- Fig. 2.
Testing set-up. Position A: At the ventilator on the inspiratory side. Position B: Between the humidifier and the inspiratory limb. Position C: Between the inspiratory limb and the Y-piece. Position D: In the inspiratory limb, 30 cm before the Y-piece. ETT = endotracheal tube.
- Fig. 3.
Intra-device comparison of albuterol captured at the end of the endotracheal tube (lung dose). With the Updraft II Opti-Neb jet nebulizer, lung dose with the 2.5 mg/3 mL solution when placed at the Y-piece was lower than all, and lung dose with the 5.0 mg/3.5 mL and 7.5 mg/4 mL solutions when positioned at the ventilator was similar to humidifier and was greater than at the Y-piece and 30 cm from the Y-piece. With the Salter 8900 jet nebulizer, lung dose with the 2.5 mg/3 mL solution when placed at the humidifier was greater than all other positions, and lung dose with the 5.0 mg/3.5 mL and 7.5 mg/4 mL solutions when positioned at the ventilator was similar to humidifier and was greater than Y-piece and 30 cm from the Y-piece. With the Maquet ultrasonic nebulizer, lung dose with the 2.5 mg/3 mL solution when placed at the humidifier was greater than all other positions, and also lung dose was greater at the ventilator than at the Y-piece; output with the 5.0 mg/3.5 mL solution when placed at the humidifier was greater than the Y-piece and 30 cm from the Y-piece and lung dose was greater at the ventilator than at the Y-piece; lung dose with the 7.5 mg/4 mL solution when placed at the humidifier was greater than all other positions, and lung dose was greater at the ventilator than at the Y-piece and 30 cm from the Y-piece. With the Aerogen Solo vibrating mesh nebulizer, lung dose with all solutions tested when positioned at the ventilator was similar to humidifier and was greater than Y-piece and 30 cm from the Y-piece.
- Fig. 4.
Inter-device comparison. * Deposition with the Aerogen Solo vibrating mesh nebulizer was greater than with all other nebulizers (P < .01). † Deposition with the Maquet ultrasonic nebulizer was greater than with the Salter 8900 nebulizer (P < .05). ‡ Deposition with the Maquet ultrasonic nebulizer was greater than with the Hudson Updraft II Opti-Neb nebulizer (P < .05). § Deposition with the Aerogen Solo vibrating mesh nebulizer was greater than with the Hudson Updraft II Opti-Neb and Salter 8900 nebulizers (P < .01).
