The effect of goal-directed crystalloid versus colloid administration on postoperative spirometry parameters: a substudy of a randomized controlled clinical trial

Author:

Obradovic Mina,Luf Florian,Reiterer Christian,Schoppmann Sebastian,Kurz Andrea,Fleischmann Edith,Kabon Barbara

Abstract

Abstract Background Pulmonary function is impaired after major abdominal surgery and might be less impaired by restrictive fluid administration. Under the assumption of a fluid-sparing effect of colloids, we tested the hypothesis that an intraoperative colloid-based goal-directed fluid management strategy impairs postoperative pulmonary function parameters less compared to goal-directed crystalloid administration. Methods We performed a preplanned, single-center substudy within a recently published trial evaluating the effect of goal-directed crystalloids versus colloids on a composite of major complications. Sixty patients undergoing major open abdominal surgery were randomized to Doppler-guided intraoperative fluid replacement therapy with lactated Ringer’s solution (n = 31) or unbalanced 6% hydroxyethyl starch 130/0.4 (n = 29). A blinded investigator performed bedside spirometry (Spirobank-G, Medical International Research, Rome, Italy) preoperatively as well as 6, 24, and 48 h postoperatively. Results Median total intraoperative fluid requirements were significantly higher during crystalloid administration compared to patients receiving colloids (4567 ml vs. 3044 ml, p = 0.01). Six hours after surgery, pulmonary function parameters did not differ significantly between the crystalloid — and the colloid group: forced vital capacity (FVC): 1.6 l (1.2–2 l) vs. 1.9 l (1.5–2.4 l), p = 0.15; forced expiratory volume in 1 second (FEV1): 1.1 l (0.9–1.6 l) vs. 1.4 l (1.2–1.7 l), p = 0.18; and peak expiratory flow (PEF): 2 l.sec−1 (1.5 – 3.6 l.sec −1) vs. 2.3 l.sec −1 (1.8 – 3.4 l.sec −1), p = 0.23. Moreover, postoperative longitudinal time × group interactions of FVC, FEV1, and PEF between 6 and 48 postoperative hours did not differ significantly. Conclusion Postoperative pulmonary function parameters were similarly impaired in patients receiving goal-directed crystalloid administration as compared to goal-directed colloid administration during open abdominal surgery. Trial registration ClinicalTrials.gov (NCT00517127, registered on August 16, 2007) and EudraCT (2005-004602-86).

Publisher

Springer Science and Business Media LLC

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