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Lung recruitment improves right ventricular performance after cardiopulmonary bypass A randomised controlled trial
Hosp Privado Univ Cordoba, Dept Anesthesia, Cordoba, Argentina..
Hosp Privado Comunidad Mar Del Plata, Dept Anesthesia, Mar Del Plata, Buenos Aires, Argentina..
Hosp Privado Univ Cordoba, Dept Cardiovasc Surg, Cordoba, Argentina..
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2017 (Engelska)Ingår i: European Journal of Anaesthesiology, ISSN 0265-0215, E-ISSN 1365-2346, Vol. 34, nr 2, s. 66-74Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

BACKGROUND Atelectasis after cardiopulmonary bypass (CPB) can affect right ventricular (RV) performance by increasing its outflow impedance. OBJECTIVE The aim of this study was to determine whether a lung recruitment manoeuvre improves RV function by re-aerating the lung after CPB. DESIGN Randomised controlled study. SETTING Single-institution study, community hospital, Cordoba, Argentina. PATIENTS Forty anaesthetised patients with New York Heart Association class I or II, preoperative left ventricular ejection fraction at least 50% and Euroscore 6 or less scheduled for cardiac surgery with CPB. INTERVENTIONS Patients were assigned to receive either standard ventilation with 6 cmH(2)O of positive end-expiratory pressure (PEEP; group C, n = 20) or standard ventilation with a recruitment manoeuvre and 10 cmH(2)O of PEEP after surgery (group RM, n = 20). RV function, left ventricular cardiac index (CI) and lung aeration were assessed by transoesophageal echocardiography (TOE) before, at the end of surgery and 30 min after surgery. MAIN OUTCOME MEASURES RV function parameters and atelectasis assessed by TOE. RESULTS Haemodynamic data and atelectasis were similar between groups before surgery. At the end of surgery, CI had decreased from 2.9 +/- 1.1 to 2.6 +/- 0.9 l min(-1) m(-2) in group C (P = 0.24) and from 2.8 +/- 1.0 to 2.6 +/- 0.8 l min(-1) m +/- 2 in group RM (P = 0.32). TOE-derived RV function parameters confirmed a mild decrease in RV performance in 95% of patients, without significant differences between groups (multivariate Hotelling t-test P = 0.16). Atelectasis was present in 18 patients in group C and 19 patients in group RM (P = 0.88). After surgery, CI decreased further from 2.6 to 2.4 l min(-)1 m(-2) in group C (P = 0.17) but increased from 2.6 to 3.7 l min(-1) m(-2) in group RM (P<0.001). TOE-derived RV function parameters improved only in group RM (Hotelling t-test P<0.001). Atelectasis was present in 100% of patients in group C but only in 10% of those in group RM (P<0.001). CONCLUSION Atelectasis after CPB impairs RV function but this can be resolved by lung recruitment using 10 cm H2O of PEEP.

Ort, förlag, år, upplaga, sidor
2017. Vol. 34, nr 2, s. 66-74
Nationell ämneskategori
Anestesi och intensivvård
Identifikatorer
URN: urn:nbn:se:uu:diva-316013DOI: 10.1097/EJA.0000000000000559ISI: 000392170300004PubMedID: 27861261OAI: oai:DiVA.org:uu-316013DiVA, id: diva2:1076973
Tillgänglig från: 2017-02-24 Skapad: 2017-02-24 Senast uppdaterad: 2017-11-29Bibliografiskt granskad

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Suarez-Sipmann, Fernando

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