Mahesh C. Misra

Meta-analysis of Randomized Controlled Trials on Hydrocolloid Occlusive Dressing Versus Conventional Gauze Dressing in the Healing of Chronic Wounds

Chronic wound management is a difficult area in surgical practice. A wide range of dressings have been recommended for the management of chronic wounds. The present meta-analysis was undertaken to determine the effectiveness of hydrocolloid dressing (HCD) in the healing of chronic wounds compared with conventional gauze dressing. All available controlled clinical trials published before December 2001 that compared HCD to conventional gauze dressing in the healing of chronic wounds were systematically reviewed. We identified and analysed 12 randomized trials (11 published; 1 unpublished) comprising 693 patients with 819 ulcers. The overall odds ratio under the fixed effect model was 1.72, that is, 72% more ulcers healed completely with HCD than with conventional gauze dressing. This result was both clinically and statistically significant.

Pancreaticogastrostomy for reconstruction of pancreatic stump after pancreaticoduodenectomy for ampullary carcinoma

BACKGROUND Management of the pancreatic stump after pancreaticoduodenectomy (PD) is still a matter of debate. Pancreaticojejunostomy (PJ) is used commonly but is associated with a significant incidence of pancreatic leaks. Pancreaticogastrostomy (PG) is an alternative that has been reported to be safer. METHODS The study is a retrospective analysis of all patients having PD for ampullary carcinoma in one surgical unit at All India Institute of Medical Sciences over 18 years, with PG being the only drainage procedure for the pancreatic stump. RESULTS Among 125 patients having PD for ampullary carcinoma, overall morbidity rate was 28%, mortality rate was 4.8%, with no cases of leakage from the pancreaticogastrostomy. CONCLUSIONS In world literature (including the current series), the leakage rate of PG is 2.5% (14 of 553) with only 2 deaths (2 of 14) due to leakage from PG. Our large experience and these data conclusively prove the safety of pancreaticogastrostomy, which should be the drainage procedure of choice for the pancreatic stump following pancreaticoduodenectomy.

Drug Treatment of Haemorrhoids

Drug treatment for various anorectal conditions has been known since ancient times. Today, modern as well as traditional drugs are being increasingly used in all grades of symptomatic haemorrhoids. These drugs (oral and local) are used as a part of conservative management or as an adjuvant to invasive outpatient procedures. Flavonoids, in the new formulation of micronised purified flavonoid fraction (MPFF) or as part of the ancient traditional medicine derivative of the Ginkgo tree, are used for relief of acute symptoms (for control of bleeding and re-bleeding in all grades of haemorrhoids). MPFF has been recommended for control of acute bleeding in patients waiting for a definitive outpatient treatment. Similarly, better known drugs such as calcium dobisilate (used in diabetic retinopathy and chronic venous insufficiency), nitrates and nifedipine have also been effective and well tolerated in the medical treatment of haemorrhoids. However, drug treatment is not aimed at curing haemorrhoids. The prime objective of drug therapy is to control the acute phase (bleeding) so that definitive therapy (banding, injection sclerotherapy, infrared photocoagulation, cryotherapy or surgery) can be scheduled at a convenient time.

Instruments for transluminal laparoscopic surgery or “NOTES”

The first endoluminal operation ever developed was transanal endoscopic microsurgery (TEM), years before laparoscopic cholecystectomy was first performed. Numerous procedures using its single port system (SPS) have since been done and it is now a well‐established technique in colorectal surgery around the world. There are some advantages of SPS over multiple port surgery. In 2005 we expanded on the concept of single port surgery with rigid instruments and started to develop instruments for transvaginal single port laparoscopic surgery. We now describe the instruments and system, which include devices that permit a safe access to the abdominal cavity, optimal endoscopic view and instrument steering and a precision that is not reached by current flexible technologies. The devices have been put to the test in an experimental model of transvaginal cholecystectomy. The potential benefits of the technique and the new instruments are discussed.

Single-port surgery and NOTES: from transanal endoscopic microsurgery and transvaginal laparoscopic cholecystectomy to transanal rectosigmoid resection.

Two different ways have been developed to perform endoscopic surgery. The standard way is multiport laparoscopic surgery. When entering through a natural orifice, we use single-port surgery for transanal work (transanal endoscopic microsurgery). In clinical routine, we moved from intralumenal surgery toward surgery in the perirectal area and finally the free abdomen. In the context of natural orifice translumenal endoscopic surgery, we have modified the length and diameter of optics and tube and developed new mechanisms for steering long curved instruments. This technology is then used for transvaginal cholecystectomy and transanal rectosigmoid resection. Global clinical application of transanal endoscopic microsurgery has proven superiority in preciseness and clinical results for adenomas and early cancer. The initial clinical study for transvaginal cholecystectomy is successfully performed in 6 female patients with an average operation time of 80 minutes and without major complication. Feasibility of transanal rectosigmoid resection is demonstrated in an ex vivo experimental model.

Sequential occurrence of preneoplastic lesions and accumulation of loss of heterozygosity in patients with gallbladder stones suggest causal association with gallbladder cancer.

Background:Causal association of gallbladder stones with gallbladder cancer (GBC) is not yet well established. Objective:To study the frequency of occurrence of preneoplastic histological lesions and loss of heterozygosity (LOH) of tumor suppressor genes in patients with gallstones. Methods:All consecutive patients with gallstones undergoing cholecystectomy from 2007–2011 were included prospectively. Histological examination of the gallbladder specimens was done for preneoplastic lesions. LOH at 8 loci, that is 3p12, 3p14.2, 5q21, 9p21, 9q, 13q, 17p13, and 18q for tumor suppressor genes (DUTT1, FHIT, APC, p16, FCMD, RB1, p53, and DCC genes) that are associated with GBC was tested from microdissected preneoplastic lesions using microsatellite markers. These LOH were also tested in 30 GBC specimens. Results:Of the 350 gallbladder specimens from gallstone patients, hyperplasia was found in 32%, metaplasia in 47.8%, dysplasia in 15.7%, and carcinoma in situ in 0.6%. Hyperplasia, metaplasia, and dysplasia alone were found in 11.7%, 24.6%, and 1.4% of patients, respectively. A combination of hyperplasia and dysplasia, metaplasia and dysplasia, and hyperplasia, metaplasia, and dysplasia was found in 3.4%, 6.3%, and 4.3% of patients, respectively. LOH was present in 2.1% to 47.8% of all the preneoplastic lesions at different loci. Fractional allelic loss was significantly higher in those with dysplasia compared with other preneoplastic lesions (0.31 vs 0.22; P = 0.042). No preneoplastic lesion or LOH was found in normal gallbladders. Conclusions:Patients with gallstones had a high frequency of preneoplastic lesions and accumulation of LOH at various tumor suppressor genes, suggesting a possible causal association of gallstones with GBC.

Laparoscopic pericystectomy for hydatid cyst of the liver.

The greatest disadvantage of conservative surgical procedures in the management of hydatid cyst of the liver is their association with high recurrence rates. Radical surgical procedures such as closed total pericystectomy avoids spillage thereby minimizing recurrences. The use of laparoscopy in performing these radical surgical procedures further reduces the morbidity associated with the open surgery. This study has been carried out to assess the safety and feasibility of laparoscopic pericystectomy in the management of hydatid cyst of liver. Small, peripherally located cysts lying away from major vessels are amenable to laparoscopic pericystectomy successfully whereas, cysts larger than 10 cm, posteriorly located cysts and those lying in close proximity to the major ducts and vessels required conversion owing to bleeding. Therefore, laparoscopic pericystectomy can be regarded as a gold standard for the management of hydatid cyst of the liver in selected patients.

Laparoscopic Suturing Skills Acquisition: A Comparison Between Laparoscopy-Exposed and Laparoscopy-Naive Surgeons

This study suggests that training improves laparoscopic suturing skills in experienced as well as inexperienced laparoscopic surgeons.

Enteral nutrition practices in the intensive care unit: Understanding of nursing practices and perspectives

Background: Adequate nutritional support is important for the comprehensive management of patients in intensive care units (ICUs). Aim: The study was aimed to survey prevalent enteral nutrition practices in the trauma intensive care unit, nurses’ perception, and their knowledge of enteral feeding. Study Design: The study was conducted in the ICU of a level 1 trauma center, Jai Prakash Narayan Apex Trauma Centre, AIIMS, New Delhi, India. The study design used an audit. Materials and Methods: Sixty questionnaires were distributed and the results analyzed. A database was prepared and the audit was done. Results: Forty-two (70%) questionnaires were filled and returned. A majority (38) of staff nurses expressed awareness of nutrition guidelines. A large number (32) of staff nurses knew about nutrition protocols of the ICU. Almost all (40) opined enteral nutrition to be the preferred route of nutrition unless contraindicated. All staff nurses were of opinion that enteral nutrition is to be started at the earliest (within 24–48 h of the ICU stay). Everyone opined that the absence of bowel sounds is an absolute contraindication to initiate enteral feeding. Passage of flatus was considered mandatory before starting enteral nutrition by 86% of the respondents. Everyone knew that the method of Ryles tube feeding in their ICU is intermittent boluses. Only 4 staff nurses were unaware of any method to confirm Ryles tube position. The backrest elevation rate was 100%. Gastric residual volumes were always checked, but the amount of the gastric residual volume for the next feed to be withheld varied. The majority said that the unused Ryles tube feed is to be discarded after 6 h. The most preferred (48%) method to upgrade their knowledge of enteral nutrition was from the ICU protocol manual. Conclusion: Information generated from this study can be helpful in identifying nutrition practices that are lacking and may be used to review and revise enteral feeding practices where necessary.

Post-traumatic skin and soft tissue infection due to Aeromonas hydrophila.

We report a case of posttraumatic skin and soft tissue infection in a patient who sustained laceration after being hit by a water tanker. Aeromonas hydrophila was isolated from pus and was identified to the species level by Vitek 2 and a battery of biochemical tests. The patient responded to thorough drainage, debridement of wound and 2 weeks of intravenous antibiotics. The patient was taken up for split skin grafting of the raw area. She was discharged with satisfactory graft uptake after 1 week without any further antibiotics advice. Follow-up after 3 weeks was satisfactory with healthy cover on the raw area and normal weight bearing on the left leg.