ArtPoster
TitelWhen synchronized isn’t synchronous- an experimental benchmarking study on the efficiency of SIMV in very-low-birth weight premature infants
TopicNeonatologie
Einleitung

Synchronized ventilation is the standard tool used to achieve respiratory autonomy in premature infants. It supports a patient’s ability to spontanouesly breathe by providing intermittent, mechanically controlled respiration. The assisted ventilation is regulated by frequency settings which dictate the interval at which the ventilator becomes sensitive to an infant’s breath and responds with an assisted breath.

Patient/en und Methoden

Using a neonatal active lung model (NALM), this in-vitro benchmark study investigated how well synchronization works in the “synchronized intermittent mandatory ventilation” (SIMV) mode of several ventilators. The efficiency of each ventilator was tested under two conditions: the first required that the ventilator be set to a constant ventilation rate while the NALM was adjusted to frequencies equal to and below this rate. The second condition varied the ventilator frequency while the NALM rate was held constant. Correctly triggered breaths were counted and displayed as a percentage (%) of each potentially triggerable breath.

Ergebnisse

Performance among devices significantly differed, ranging from a low 38.9% to a max of 71.7% under the first condition, while showing an increase ranging from 70,7% to 102.5% under the second condition.

Schlussfolgerung/Diskussion

At high SIMV frequencies, synchronization between patient and ventilator becomes increasingly limited. Despite their identical functions as ventilators, SIMV algorithms of various manufacturers deliver ventilation rates with significantly different degrees of synchronization; not only in comparison to each other, but also with respect to their own ability synchronize breaths under various conditions typical of preterm lungs.

review
Erstautor*in ist unter 35 Jahre alt
Autor*in 1Lorenz Auer-Hackenberg Universitätsklinik für Kinder- und Jugendheilkunde, Uniklinikum Salzburg/Landeskrankenhaus, Division für Neonatologie
Autor*in 2Clemens Haselmann Universitätsklinik für Kinder- und Jugendheilkunde, Uniklinikum Salzburg/Landeskrankenhaus, Division für Neonatologie
Autor*in 3Johannes Brandner Universitätsklinik für Kinder- und Jugendheilkunde, Uniklinikum Salzburg/Landeskrankenhaus, Division für Neonatologie
Autor*in 4Edda Hofstätter Universitätsklinik für Kinder- und Jugendheilkunde, Uniklinikum Salzburg/Landeskrankenhaus, Division für Neonatologie
Autor*in 5Patricia Stroicz Universitätsklinik für Kinder- und Jugendheilkunde, Uniklinikum Salzburg/Landeskrankenhaus, Division für Neonatologie
Autor*in 6Martin Wald Universitätsklinik für Kinder- und Jugendheilkunde, Uniklinikum Salzburg/Landeskrankenhaus, Division für Neonatologie