Assessment of the effect of gabapentin as an analgesic replacement on the Kidney function following Laparoscopic sleeve gastrectomy for Morbid Obese Patients by measuring two biomarkers: NGAL (Neutrophil gelatinase-associated lipocalin)and DKK3 (Dickkopf-3)
Obesity should be viewed as the number one preventable risk factor for kidney disease because obesity mediates the majority of diabetes and hypertension, the 2 major causes of end-stage kidney disease (ESKD). Morbidly obese adults have a 6-fold higher risk of diabetes compared with their lean peers. Laparoscopic sleeve gastrectomy (LSG) has been approved since 2010, by both the American Society for Metabolic and Bariatric Surgery (ASMBS) and the American College of Surgeons (ACS) as an operation for the treatment of obesity and other obesity-related diseases. Acute kidney injury (AKI) is one of the most common postoperative complications. It is a serious morbidity occurring during hospitalizations, and it is associated with prolonged hospital stay, high risk of in-hospital mortality, increased hospital costs, and decreased survival for up to 15 years after surgery. In addition, AKI increases the risk of incident and progressive chronic kidney disease and is associated with reduced long-term survival. Non-steroidal anti-inflammatory drugs (NSAIDs) represent one of the most common classes of medications used postoperatively. It is estimated that 1-5% of NSAIDs users may develop renal adverse effects, both AKI and CKD. Gabapentin, an anticonvulsant widely used for the treatment of various neuropathic pain syndromes, has recently been investigated as an analgesic agent in the perioperative setting. Although it is not an analgesic itself, early experience suggests this medication can improve pain and reduce opioid requirements. A new animal study shows that gabapentin demonstrated reno-protective properties against either acute or chronic kidney injury, primarily attributed to its antioxidant properties. Further clinical studies are required to validate and standardize therapeutic doses of gabapentin under investigation in patients susceptible or at risk of developing kidney dysfunction. In this study, Neutrophil gelatinase-associated lipocalin (NGAL) and Dickkopf-3 (DKK3) will be biomarkers to assess kidney function. NGAL appears to be a promising marker for early detection of AKI and is likely to be adapted for wide-scale clinical use in patient management as a point-of-care test. Measurement of DKK3 in urine represents a novel tool for the identification of patients at high risk for AKI regardless of the cause of kidney injury.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
SINGLE
Enrollment
90
Standard laparoscopic sleeve gastrectomy performed under general anesthesia according to institutional protocol, with gastric resection over a calibration bougie.
A single oral dose of 1200 mg gabapentin administered 1 hour prior to induction of anesthesia for laparoscopic sleeve gastrectomy. The medication is given as two 600 mg tablets ((Unipharma Co.)
Tanta University
Tanta, Egypt
Change in renal function markers (serum creatinine and BUN) from baseline
Serum creatinine (mg/dL) and blood urea nitrogen, BUN (mg/dL) measured preoperatively (baseline) and at 24 hours after laparoscopic sleeve gastrectomy; primary analysis is the change from baseline to 24 hours postoperatively.
Time frame: Baseline,24 hours postoperatively and 6 months after surgery
Level of NGAL
Serum NGAL measured by ELISA kit
Time frame: Baseline, 24 hours postoperatively and 6 months after surgery
Level of Dickkopf-3 (DKK3)
Serum and urine DKK3 measured by ELISA kit
Time frame: Baseline,24 hours postoperatively and 6 months after surgery
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