Perioperative intravascular volume replacement and kidney insufficiency

Management of Acute Kidney Injury Following Major Abdominal Surgery: A Contemporary Review

Acute kidney injury (AKI) is a frequent occurrence following major abdominal surgery and is independently associated with both in-hospital and long-term mortality, as well as with a higher risk of progressing to chronic kidney disease (CKD) and cardiovascular events. Postoperative AKI can account for up to 40% of in-hospital AKI cases. Given the differences in patient characteristics and the pathophysiology of postoperative AKI, it is inappropriate to assume that the management after noncardiac and nonvascular surgery are the same as those after cardiac and vascular surgery. This article provides a comprehensive review on the available evidence on the management of postoperative AKI in the setting of major abdominal surgery.

Goal-directed fluid therapy on laparoscopic colorectal surgery within enhanced recovery after surgery program

INTRODUCTION

Enhanced recovery after surgery protocols (ERAS) are used in peri-operative care to reduce the stress response to surgical aggression. As fluid overload has been associated with increased morbidity and delayed hospital discharge, a major aspect of this is fluid management. Intra-operative goal-directed fluid protocols have been shown to reduce post-operative complications, particularly in high risk patients.?.

OBJECTIVE

To compare 2fluid therapy models (zero-balance versus goal-directed fluid therapy) in patients who were scheduled for laparoscopic colorectal surgery within an ERAS program, recording the rate of complications such as surgical site infection, ileus, post-operative náusea and vomiting, and variability of the estimated glomerular filtration rate (eGFR).

MATERIALS AND METHODS

An observational, retrospective study was conducted including adults who were scheduled for elective laparoscopic colorectal surgery within an ERAS program, and to investigate the postoperative complication rate.

RESULTS

A total of 128 patients were included in this study; 43 (33.6%) in the zero-balance group and 85 (66.4%) in the goal-directed fluid therapy group. The total fluids administered was lower in the goal-directed fluid therapy group, as well as the incidence of post-operative complications (surgical site infection, anastomotic leak, ileus, and postoperative náusea and vomiting). No significant differences were found for length of stay, intra-operative urine output, and variability of the eGFR.?.

CONCLUSION

The results of this study show that by using a goal-directed fluid therapy algorithm, the total amount of fluids administered can be reduced, as well as obtaining a lower incidence of post-operative complications.

Acute kidney injury in major abdominal surgery: incidence, risk factors, pathogenesis and outcomes

Acute kidney injury (AKI) is a common complication in patients undergoing major abdominal surgery. Various recent studies using modern standardized classifications for AKI reported a variable incidence of AKI after major abdominal surgery ranging from 3 to 35%. Several patient-related, procedure-related factors and postoperative complications were identified as risk factors for AKI in this setting. AKI following major abdominal surgery has been shown to be associated with poor short- and long-term outcomes. Herein, we provide a contemporary and critical review of AKI after major abdominal surgery focusing on its incidence, risk factors, pathogeny and outcomes.

Clinical and functional outcomes of acute lower extremity compartment syndrome at a Major Trauma Hospital

Background:

Acute lower extremity compartment syndrome (CS) is a condition that untreated causes irreversible nerve and muscle ischemia. Treatment by decompression fasciotomy without delay prevents permanent disability. The use of intracompartmental pressure (iCP) measurement in uncertain situations aids in diagnosis of severe leg pain. As an infrequent complication of lower extremity trauma, consequences of CS include chronic pain, nerve injury, and contractures. The purpose of this study was to observe the clinical and functional outcomes for patients with lower extremity CS after fasciotomy.

Methods:

Retrospective chart analysis for patients with a discharge diagnosis of CS was performed. Physical demographics, employment status, activity at time of injury, injury severity score, fracture types, pain scores, hours to fasciotomy, iCP, serum creatine kinase levels, wound treatment regimen, length of hospital stay, and discharge facility were collected. Lower extremity neurologic examination, pain scores, orthopedic complications, and employment status at 30 days and 12 months after discharge were noted.

Results:

One hundred twenty-four patients were enrolled in this study. One hundred and eight patients were assessed at 12 months. Eighty-one percent were male. Motorized vehicles caused 51% of injuries in males. Forty-one percent of injuries were tibia fractures. Acute kidney injury occurred in 2.4%. Mean peak serum creatine kinase levels were 58,600 units/ml. Gauze dressing was used in 78.9% of nonfracture patients and negative pressure wound vacuum therapy in 78.2% of fracture patients. About 21.6% of patients with CS had prior surgery. Nearly 12.9% of patients required leg amputation. Around 81.8% of amputees were male. Sixty-seven percent of amputees had associated vascular injuries. Foot numbness occurred in 20.5% of patients and drop foot palsy in 18.2%. Osteomyelitis developed in 10.2% of patients and fracture nonunion in 6.8%. About 14.7% of patients underwent further orthopedic surgery. At long-term follow-up, 10.2% of patients reported moderate lower extremity pain and 69.2% had returned to work.

Conclusion:

Escalation in leg pain and changes in sensation are the cardinal signs for CS rather than reliance on assessing for firm compartments and pressures. The severity of nerve injury worsens with the delay in performing fasciotomy. Standardized diagnostic protocols and wound treatment strategies will result in improved outcomes from this complication.