Peritoneal/ Serum Lactate Ratio in Relaparotomy

2014-07-24 14:00:41 | BioPortfolio


Laparotomy performed for both emergency of elective surgery may by complicated by intrabdominal collection, anastomotic leakage, infarction and others. This conditions are able to induce peritoneal inflammation. Inflamed peritoneum are able to produce excess of lactate that we can measure by collecting fluid from peritoneal drainage.

Drainage were left in abdomen for monitoring intrabdominal condition until the passage of stool or flatus. Minimum drainage of serum is present daily also in uncomplicated post operative period.

Serum lactate relates with increased systemic anaerobic metabolism such as SIRS, sepsis and systemic hypoperfusion and it is easy to measure with a blood gas analysis.

We hypothesized that the increases of peritoneal/ serum lactate ratio could be an earlier, sensible, non-invasive, and economical marker of post surgical complications. The decision whether and when to perform a relaparotomy in secondary peritonitis is largely subjective and based on professional experience. Actually no existing scoring system aids in this decision.

The aim of this study is to demonstrate that this ratio could be and useful tool for the surgeon in this decisional process.


Post operative intraabdominal sepsis due to surgical complications is associated with an important mortality and morbidity. Early diagnosis is crucial to improve outcome. Relaparotomy could be necessary to eradicate the intraabdominal focus of sepsis or hypoperfusion. The relaparotomy must be performed early after the diagnosis of surgical complications before the onset of multi organ failure.

This prospective observational study includes the post operative period of consecutive patients requiring both major elective surgery and urgent laparotomy.

Demographic data, presence and nature of underlying disease and surgical diagnosis will be recorded on admission and study inclusion.

Daily after study inclusion, we measure: venous blood gases, blood lactate and lactate presents in the fluid collected from the abdomen. Possum and SAPSII scores will be calculated daily or when a patient develops a rapid clinical deterioration.

We follow patients with complicated or uncomplicated post operative period. Post operative complications are defined as: mesenteric ischemia, need for reintervention, anastomotic leakage or fistula, secondary peritonitis and death.

The primary end point is to demonstrate the correlation between surgical complications and serum/abdominal lactate ratio.

The second end point is to verify the correlation between need to relaparotomy and Possum an SAPSII scores.

Study Design

Time Perspective: Prospective


Surgical Complications


Chirurgia Generale e d'Urgenza; Ospedale SG Bosco: aslTO2


Active, not recruiting


Ospedale S. Giovanni Bosco

Results (where available)

View Results


Published on BioPortfolio: 2014-07-24T14:00:41-0400

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Medical and Biotech [MESH] Definitions

Complications that affect patients during surgery. They may or may not be associated with the disease for which the surgery is done, or within the same surgical procedure.

Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery.

Surgical techniques in which SUTURES are not applied to surgical wounds.

Sterile clothing worn during surgical procedures to protect the surgical site from sources of contamination.

Nonexpendable apparatus used during surgical procedures. They are differentiated from SURGICAL INSTRUMENTS, usually hand-held and used in the immediate operative field.

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