Impact of introduction of laparoscopic surgery on management of unresolved intra-abdominal malignancies in a West African hospital

Affordable Laparoscopic Camera System (ALCS) Designed for Low- and Middle-Income Countries: A Feasibility Study

BACKGROUND

Minimally invasive surgical techniques (MISTs) could have tremendous benefits in resource-poor environment. There is growing interest in MISTs in most low- and middle-income countries (LMIC), but its adoption has remained limited; this is largely due to high cost of the initial setup, lack of technological backup and limited access to training among others. An affordable laparoscopic setup will go a long way in improving access to MISTs.

METHODS

A common zero degrees 10 mm scope is attached on the camera of a low-price smartphone. Two elastic bands are used to fix the scope right in front of the smartphone's main camera; alternatively, a low-cost camera coupler can be used. The device is covered with sterile transparent drapes and a light source connected with a fiber-optic cable for endoscopic use. The image can be seen in real time on a common TV screen through an HDMI connection to the smartphone, with a sterile drape.

RESULTS

We were able to perform the five tasks of the Fundamentals of Laparoscopic Surgery curriculum, using our vision system with proficiency. In a pig model, we performed a tubal ligation to simulate an appendectomy and we were able to suture. No major differences were measured between the two connection systems.

CONCLUSIONS

A low-cost laparoscopic camera system can benefit surgeons and trainees in LMICs. The system is already attractive for use during training, but further studies are needed to evaluate its potential clinical role in LMICs.

Trend Over Time for Cholecystectomy following the Introduction of Laparoscopy in a Nigerian Tertiary Hospital

Background:

There still exist some concerns about the desirability of laparoscopic surgery in lower-middle income countries. We recently adopted laparoscopy for common general surgical procedures and observed many benefits. This study aims to describe the changing rate of cholecystectomy before and after the introduction of laparoscopy in our hospital.

Methods:

We reviewed the records of cholecystectomies performed before and after the introduction of laparoscopic cholecystectomy (LC) in 2009 in a single general surgery unit of the Ife Hospital Unit of the Obafemi Awolowo University Teaching Hospitals Complex, Ile-Ife, Nigeria. Cholecystectomy was reviewed as a percentage of general procedures performed, and postoperative length of stay was calculated.

Results:

A total of 173 cholecystectomies were performed in the hospital between January 2005 and December 2015. The yearly number rose from 7 in 2005 to 31 in 2015 corresponding to 2.7% of total elective major general surgery procedures in 2005 and 9.1% in 2015. A marked progressive increase was observed in the number and rate of cholecystectomies from 2009 following introduction of LC. From 0% in 2005, LC rose to 90% of all cholecystectomies in 2015. The mean postoperative length of stay of patients undergoing cholecystectomy declined from 5.2 days in 2005 to 3 days in 2009 and 1.8 days in 2015.

Conclusion:

This study demonstrates an increased rate of cholecystectomy following the introduction of LC in our setting. We recommend increased adoption of laparoscopy and other forms of minimally invasive surgery across the country.

Intraocular Pressure Changes With Positioning During Laparoscopy

Background and Objectives:

Pneumoperitoneum during laparoscopy can produce changes in intraocular pressure (IOP) that may be influenced by several factors. In this study, we investigated changes in IOP during laparoscopy with different positioning.

Methods:

We recruited adult patients without eye disease scheduled to undergo laparoscopic operation requiring a reverse Trendelenburg tilt (rTr; group A; n = 20) or Trendelenburg tilt (Tr; Group B; n = 20). IOP was measured at 7 time points (T1–T7). All procedures were performed with standardized anaesthetic protocol. Mean arterial pressure (MAP), heart rate (HR), peak and plateau airway pressure, and end-tidal carbon dioxide (ETCO₂) measurements were taken at each time point.

Results:

Both groups were similar in age, sex, mean body mass index (BMI), duration of surgery, and preoperative IOP. A decrease in IOP was observed in both groups after induction of anaesthesia (T2), whereas induction of pneumoperitoneum produced a mild increase in IOP (T3) in both groups. The Trendelenburg tilt produced IOP elevations in 80% of patients compared to 45% after the reverse Trendelenburg tilt (P = .012). A significant IOP increase of 5 mm Hg or more was recorded in 3 (15%) patients in the Trendelenburg tilt group and in none in the reverse Trendelenburg group. At T7, IOP had returned to preoperative levels in all but 3 (15%) in the Trendelenburg and 1 (5%) in the reverse Trendelenburg group. Reversible changes were observed in the MAP, HR, ETCO₂, and airway pressures in both groups.

Conclusions:

IOP changes induced by laparoscopy are realigned after evacuation of pneumoperitoneum. A Trendelenburg tilt however produced significant changes that may require careful patient monitoring during laparoscopic procedures.

Practice, training and safety of laparoscopic surgery in low and middle-income countries

Surgical management of diseases is recognised as a major unmet need in low and middle-income countries (LMICs). Laparoscopic surgery has been present since the 1980s and offers the benefit of minimising the morbidity and potential mortality associated with laparotomies. Laparotomies are often carried out in LMICs for diagnosis and management, due to lack of radiological investigative and intervention options. The use of laparoscopy for diagnosis and treatment is globally variable, with high-income countries using laparoscopy routinely compared with LMICs. The specific advantages of minimally invasive surgery such as lower surgical site infections and earlier return to work are of great benefit for patients in LMICs, as time lost not working could result in a family not being able to sustain themselves. Laparoscopic surgery and training is not cheap. Cost is a major barrier to healthcare access for a significant population in LMICs. Therefore, cost is usually seen as a major barrier for laparoscopic surgery to be integrated into routine practice in LMICs. The aim of this review is to focus on the practice, training and safety of laparoscopic surgery in LMICs. In addition it highlights the barriers to progress in adopting laparoscopic surgery in LMICs and how to address them.

Diagnostic accuracy of laparoscopy following computed tomography (CT) scanning for assessing the resectability with curative intent in pancreatic and periampullary cancer

BACKGROUND

Surgical resection is the only potentially curative treatment for pancreatic and periampullary cancer. A considerable proportion of patients undergo unnecessary laparotomy because of underestimation of the extent of the cancer on computed tomography (CT) scanning. Laparoscopy can detect metastases not visualised on CT scanning, enabling better assessment of the spread of cancer (staging of cancer). This is an update to a previous Cochrane Review published in 2013 evaluating the role of diagnostic laparoscopy in assessing the resectability with curative intent in people with pancreatic and periampullary cancer.

OBJECTIVES

To determine the diagnostic accuracy of diagnostic laparoscopy performed as an add-on test to CT scanning in the assessment of curative resectability in pancreatic and periampullary cancer.

SEARCH METHODS

We searched the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE via PubMed, EMBASE via OvidSP (from inception to 15 May 2016), and Science Citation Index Expanded (from 1980 to 15 May 2016).

SELECTION CRITERIA

We included diagnostic accuracy studies of diagnostic laparoscopy in people with potentially resectable pancreatic and periampullary cancer on CT scan, where confirmation of liver or peritoneal involvement was by histopathological examination of suspicious (liver or peritoneal) lesions obtained at diagnostic laparoscopy or laparotomy. We accepted any criteria of resectability used in the studies. We included studies irrespective of language, publication status, or study design (prospective or retrospective). We excluded case-control studies.

DATA COLLECTION AND ANALYSIS

Two review authors independently performed data extraction and quality assessment using the QUADAS-2 tool. The specificity of diagnostic laparoscopy in all studies was 1 because there were no false positives since laparoscopy and the reference standard are one and the same if histological examination after diagnostic laparoscopy is positive. The sensitivities were therefore meta-analysed using a univariate random-effects logistic regression model. The probability of unresectability in people who had a negative laparoscopy (post-test probability for people with a negative test result) was calculated using the median probability of unresectability (pre-test probability) from the included studies, and the negative likelihood ratio derived from the model (specificity of 1 assumed). The difference between the pre-test and post-test probabilities gave the overall added value of diagnostic laparoscopy compared to the standard practice of CT scan staging alone.

MAIN RESULTS

We included 16 studies with a total of 1146 participants in the meta-analysis. Only one study including 52 participants had a low risk of bias and low applicability concern in the patient selection domain. The median pre-test probability of unresectable disease after CT scanning across studies was 41.4% (that is 41 out of 100 participants who had resectable cancer after CT scan were found to have unresectable disease on laparotomy). The summary sensitivity of diagnostic laparoscopy was 64.4% (95% confidence interval (CI) 50.1% to 76.6%). Assuming a pre-test probability of 41.4%, the post-test probability of unresectable disease for participants with a negative test result was 0.20 (95% CI 0.15 to 0.27). This indicates that if a person is said to have resectable disease after diagnostic laparoscopy and CT scan, there is a 20% probability that their cancer will be unresectable compared to a 41% probability for those receiving CT alone.A subgroup analysis of people with pancreatic cancer gave a summary sensitivity of 67.9% (95% CI 41.1% to 86.5%). The post-test probability of unresectable disease after being considered resectable on both CT and diagnostic laparoscopy was 18% compared to 40.0% for those receiving CT alone.

AUTHORS' CONCLUSIONS

Diagnostic laparoscopy may decrease the rate of unnecessary laparotomy in people with pancreatic and periampullary cancer found to have resectable disease on CT scan. On average, using diagnostic laparoscopy with biopsy and histopathological confirmation of suspicious lesions prior to laparotomy would avoid 21 unnecessary laparotomies in 100 people in whom resection of cancer with curative intent is planned.