Pathophysiology of Perioperative Fluid Management in Emergency Laparotomy

Copenhagen University Hospital, Hvidovre

Status: Completed

Conditions: Intestinal Perforation; Fluid Overload; Intestinal Obstruction; Pathophysiology; Anastomotic Leak

Study type: Observational

Funder types: Other

Identifiers

NCT03997721

H-19010653

Details and patient eligibility

About

Pathophysiology of perioperative fluid management in patients undergoing emergency laparotomy.

Full description

In critically ill patients and patients undergoing major surgery, the combination of internal fluid shifts and fluid retention resulting in extravascular fluid accumulation and postoperative organ dysfunctions, complicates perioperative fluid management and influences patient outcome.

Changes in extravascular volume after surgery have been much debated, studies in major surgery suggest that extracellular volume expansion may correlate with intraoperative fluid administration, while other studies show the intravascular volume to be decreased after surgery.

Difficulty in obtaining accurate measurements of the fluid phases is recognized and despite years of research, perioperative extravascular volume changes have not been clarified in acute high-risk abdominal (AHA) surgery. It is essential to be able to identify and characterize the transition from necessary fluid resuscitation to harmful fluid volume accumulation, intra- as well as extravascular.

The present study seeks to investigate the perioperative fluid status and fluid shifts in patients undergoing AHA surgery, specifically focusing on intra- versus extra-vascular fluid status in patients with intestinal obstruction versus intestinal perforation.

Enrollment: 73 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Adults (18 years or over) undergoing emergency high-risk abdominal surgery for following abdominal pathology:

   1. Perforated small intestine
   2. Perforated large intestine
   3. Perforated ulcer
   4. Intestinal obstruction
   5. Anastomotic leakage following elective surgery

2. Provided verbal and written informed consent

3. Must speak and understand the Danish language

Exclusion criteria

1. Appendectomies, cholecystectomies, negative diagnostic laparoscopies/laparotomies, herniotomies without bowel resections, sub-acute internal hernias after gastric bypass surgery, sub-acute surgery for inflammatory bowel diseases.
2. Primary surgery for intestinal ischemia, abdominal bleed
3. Emergency re-operations after elective surgery owing to intraabdominal bleeding, paralytic/obstructive ileus, intestinal ischemia
4. Reoperation owing to fascial separation with no other abdominal pathology identified and sub-acute colorectal cancer-surgery were excluded from the cohort. Sub-acute surgery was defined as surgery planned within 48 hours.
5. Traumas, gynecological, urogenital and other vascular pathology, pregnant patients.
6. Dementia and/or cognitive dysfunction (diagnosed).

Trial design

73 participants in 3 patient groups

Perforation

Description:

Patients undergoing primary emergency laparotomy/laparoscopy due to suspicion of intestinal perforation or ( small intestine, large intestine), perforated ventricular or duodenal ulcer

Obstruction

Description:

Patients undergoing primary emergency laparotomy/laparoscopy due to suspicion of intestinal obstruction

Anasomotic leak

Description:

Patients undergoing primary emergency laparotomy/laparoscopy due to suspicion of anastomotic leak following elective surgery.