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01.12.2018 | Study protocol | Ausgabe 1/2018 Open Access

Trials 1/2018

Individualized, perioperative, hemodynamic goal-directed therapy in major abdominal surgery (iPEGASUS trial): study protocol for a randomized controlled trial

Trials > Ausgabe 1/2018
Sandra Funcke, Bernd Saugel, Christian Koch, Dagmar Schulte, Thomas Zajonz, Michael Sander, Angelo Gratarola, Lorenzo Ball, Paolo Pelosi, Savino Spadaro, Riccardo Ragazzi, Carlo Alberto Volta, Thomas Mencke, Amelie Zitzmann, Benedikt Neukirch, Gonzalo Azparren, Marta Giné, Vicky Moral, Hans Otto Pinnschmidt, Oscar Díaz-Cambronero, Maria Jose Alberola Estelles, Marisol Echeverri Velez, Maria Vila Montañes, Javier Belda, Marina Soro, Jaume Puig, Daniel Arnulf Reuter, Sebastian Alois Haas
Wichtige Hinweise

Electronic supplementary material

The online version of this article (https://​doi.​org/​10.​1186/​s13063-018-2620-9) contains supplementary material, which is available to authorized users.



Postoperative morbidity and mortality in patients undergoing surgery is high, especially in patients who are at risk of complications and undergoing major surgery. We hypothesize that perioperative, algorithm-driven, hemodynamic therapy based on individualized fluid status and cardiac output optimization is able to reduce mortality and postoperative moderate and severe complications as a major determinant of the patients’ postoperative quality of life, as well as health care costs.


This is a multi-center, international, prospective, randomized trial in 380 patients undergoing major abdominal surgery including visceral, urological, and gynecological operations. Eligible patients will be randomly allocated to two treatment arms within the participating centers. Patients of the intervention group will be treated perioperatively following a specific hemodynamic therapy algorithm based on pulse-pressure variation (PPV) and individualized optimization of cardiac output assessed by pulse-contour analysis (ProAQT© device; Pulsion Medical Systems, Feldkirchen, Germany). Patients in the control group will be treated according to standard local care based on established basic hemodynamic treatment. The primary endpoint is a composite comprising the occurrence of moderate or severe postoperative complications or death within 28 days post surgery. Secondary endpoints are: (1) the number of moderate and severe postoperative complications in total, per patient and for each individual complication; (2) the occurrence of at least one of these complications on days 1, 3, 5, 7, and 28 in total and for every complication; (3) the days alive and free of mechanical ventilation, vasopressor therapy and renal replacement therapy, length of intensive care unit, and hospital stay at day 7 and day 28; and (4) mortality and quality of life, assessed by the EQ-5D-5L™ questionnaire, after 6 months.


This is a large, international randomized controlled study evaluating the effect of perioperative, individualized, algorithm-driven ,hemodynamic optimization on postoperative morbidity and mortality.

Trial registration

Trial registration: NCT03021525. Registered on 12 January 2017.
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