PT  - JOURNAL ARTICLE
AU  - Gabriella Abbate
AU  - Sebastiano Colombo
AU  - Keibun Liu
AU  - Clayton Semenzin
AU  - Noriko Sato
AU  - Carmen Ainola
AU  - Emily Wood
AU  - Davide Chiumello
AU  - Jacky Suen
AU  - Jo Pauls
AU  - John Fraser
AU  - Gianluigi Li Bassi
TI  - Structural characteristics of a novel catheter for esophageal pressure monitoring
AID  - 10.1183/13993003.congress-2021.PA3229
DP  - 2021 Sep 05
TA  - European Respiratory Journal
PG  - PA3229
VI  - 58
IP  - suppl 65
4099  - http://erj.ersjournals.com/content/58/suppl_65/PA3229.short
4100  - http://erj.ersjournals.com/content/58/suppl_65/PA3229.full
SO  - Eur Respir J2021 Sep 05; 58
AB  - Introduction: Esophageal pressure monitoring allows estimation of transpulmonary pressure and precise application of lung-protective ventilation.Aims and Objectives: We describe structural characteristics of a novel esophageal catheter comprising a polyurethane balloon in comparison with commercially available alternatives.Methods: We tested a novel catheter (AspisafeNG+, Aspisafe Solution, NY, USA), designed to monitor esophageal pressure and prevent gastro-esophageal reflux vs. four commercially available catheters. We used a caliper to measure esophageal balloon outer diameter (OD) and length. Balloon compliance was measured via 0.5-mL increments of air up to an internal pressure of 40 cmH2O. Minimum volume (Vmin) was defined as the inflated volume that caused a linear increase in balloon internal pressure. Each experiment was made in triplicate.Results: Balloon OD varied among catheters (N 15, p=0.012) and ranged from median (IQR) of 6.6 (0.5) mm (Cooper®), up to 25.2 (0.2) mm (AspisafeNG+). Balloon lengths as well differed among catheters (N 15, p=0.013) from median (IQR) of 39.1 (2.5) mm (Aspisafe NG+), up to 100.7 (0.7) mm (Nutrivent®). Vmin (N 15, p=0.010) varied among catheters, as reported in Fig.1, while compliance did not (N 103, p=0.714).Measurements and Main Results: The novel esophageal balloon is characterized by large OD and Vmin. Manufacturers produce highly heterogeneous catheters for esophageal pressure monitoringFootnotesCite this article as: European Respiratory Journal 2021; 58: Suppl. 65, PA3229.This abstract was presented at the 2021 ERS International Congress, in session “Prediction of exacerbations in patients with COPD”.This is an ERS International Congress abstract. No full-text version is available. Further material to accompany this abstract may be available at www.ers-education.org (ERS member access only).