TY - JOUR

T1 - Plasma pro-atrial natriuretic peptide to estimate fluid balance during open and robot-assisted esophagectomy

T2 - a prospective observational study

AU - Strandby, Rune Broni

AU - Ambrus, Rikard

AU - Secher, Niels H

AU - Goetze, Jens Peter

AU - Achiam, Michael Patrick

AU - Svendsen, Lars Bo

PY - 2017/2/3

Y1 - 2017/2/3

N2 - BACKGROUND: It remains debated how much fluid should be administered during surgery. The atrial natriuretic peptide precursor proANP is released by atrial distension and deviations in plasma proANP are reported associated with perioperative fluid balance. We hypothesized that plasma proANP would decrease when the central blood volume is compromised during the abdominal part of robot-assisted hybrid (RE) esophagectomy and that a positive fluid balance would be required to maintain plasma proANP.METHODS: Patients undergoing RE (n = 25) or open (OE; n = 25) esophagectomy for gastroesophageal cancer were included consecutively in this prospective observational study. Plasma proANP was determined repetitively during esophagectomy to allow for distinction between the abdominal and thoracic part of the procedure. The RE group was 15° head up tilted during the abdominal procedure.RESULTS: The blood loss was 250 (150-375) (RE) and 600 ml (390-855) (OE) (p = 0.01), but the two groups of patients were provided with a similar positive fluid balance: 1705 (1390-1983) vs. 1528 ml (1316-1834) (p = 0.4). However, plasma proANP decreased by 21% (p < 0.01) during the abdominal part of RE carried out during moderate head-up tilt, but only by 11% (p = 0.01) during OE where the patients were supine. Plasma proANP and fluid balance were correlated in the RE-group (r = 0.5 (0.073-0.840), p = 0.02) and tended to correlate in the OE group (r = 0.4 (-0.045-0.833), p = 0.08).CONCLUSION: The results support that plasma proANP decreases when the central blood volume is compromised and suggest that an about 2200 ml surplus administration of crystalloid is required to maintain plasma proANP during esophagectomy.TRIAL REGISTRATION: Clinicaltrials.gov ( NCT02077673 ). Registered retrospectively February 12th2014.

AB - BACKGROUND: It remains debated how much fluid should be administered during surgery. The atrial natriuretic peptide precursor proANP is released by atrial distension and deviations in plasma proANP are reported associated with perioperative fluid balance. We hypothesized that plasma proANP would decrease when the central blood volume is compromised during the abdominal part of robot-assisted hybrid (RE) esophagectomy and that a positive fluid balance would be required to maintain plasma proANP.METHODS: Patients undergoing RE (n = 25) or open (OE; n = 25) esophagectomy for gastroesophageal cancer were included consecutively in this prospective observational study. Plasma proANP was determined repetitively during esophagectomy to allow for distinction between the abdominal and thoracic part of the procedure. The RE group was 15° head up tilted during the abdominal procedure.RESULTS: The blood loss was 250 (150-375) (RE) and 600 ml (390-855) (OE) (p = 0.01), but the two groups of patients were provided with a similar positive fluid balance: 1705 (1390-1983) vs. 1528 ml (1316-1834) (p = 0.4). However, plasma proANP decreased by 21% (p < 0.01) during the abdominal part of RE carried out during moderate head-up tilt, but only by 11% (p = 0.01) during OE where the patients were supine. Plasma proANP and fluid balance were correlated in the RE-group (r = 0.5 (0.073-0.840), p = 0.02) and tended to correlate in the OE group (r = 0.4 (-0.045-0.833), p = 0.08).CONCLUSION: The results support that plasma proANP decreases when the central blood volume is compromised and suggest that an about 2200 ml surplus administration of crystalloid is required to maintain plasma proANP during esophagectomy.TRIAL REGISTRATION: Clinicaltrials.gov ( NCT02077673 ). Registered retrospectively February 12th2014.

KW - Aged

KW - Atrial Natriuretic Factor/blood

KW - Esophagectomy/methods

KW - Female

KW - Humans

KW - Male

KW - Middle Aged

KW - Robotics

KW - Water-Electrolyte Balance

U2 - 10.1186/s12871-017-0314-6

DO - 10.1186/s12871-017-0314-6

M3 - Journal article

C2 - 28159014

VL - 17

JO - BMC Anesthesiology

JF - BMC Anesthesiology

SN - 1471-2253

M1 - 20

ER -