A new clinical-ultrasound score to predict difficult videolaparocholecystectomies: A prospective study.

BACKGROUND: The gold standard treatment of symptomatic cholelithiasis is videolaparoscopic cholecystectomy (VLC). The aim of this study is to produce a predictive clinical ultrasound (US) score for difficult VLC to reduce the rate of conversion to open cholecystectomy surgery and intra and/or post-operative complications. METHODS: In this prospective study carried out in 2017 we enrolled 135 patients (pts) who underwent VLC in our General Surgery Unit. A specific pre-operative abdominal ultrasound scan was performed to assess gallbladder characteristics for each patient. All US and patients' characteristics were recorded in a standard form in order to obtain a preoperative score and were then added to the intra-operative variables. RESULTS: The analysis revealed a statistical significance between post-operative characteristics and parietal thickness, adhesions, stratifications and volume of gallstones. Comparing the degree of difficulty VLC assessed in the pre-operative stage to the intraoperative score, the sensitivity of the preoperative US scan test is 91.8% while the specificity is 76.7%. CONCLUSIONS: The variables which proved statistically significant in predicting a difficult cholecystectomy were: age, parietal thickness >3 mm, adhesions, stratifications, gallstones >2 cm and fixed gallstones. We have definitively defined a predictive score for difficult VLC for which a VLC is to be considered potentially difficult whenever it presents a pre-operative score equal or greater than 4 (and a "easy" one with a pre-operative score less than 4). These findings may prove helpful in further reducing the conversion rate and the rate of intra- and/or post-operative complications.

Laparoscopic appendectomy for the treatment of acute appendicitis: A single center experience.

AIM: The aim of our study is to compare the pre, intra- and post-operative variables of the two surgical techniques, to demonstrate if laparoscopic appendectomy can be considered safer and associated to better outcome. MATERIAL OF STUDY: A retrospective analysis of 175 patients has been carried out. Alvarado score, time of surgery, analgesic therapy and length of hospital stay calculated. Finally, postoperative complications were recorded. RESULTS: From January 2011 - April 2016 175 patients were enrolled: 128pts underwent laparoscopic technique and 47pts open technique. The average value of Alvarado score is lower in LA group than in OA group just as the average time of surgery and the use of post-operative analgesic therapy. DISCUSSION: LA has become the surgical technique mostly performed for the treatment of simple and complicated acute appendicitis. Our study shows that LA pts are younger with a statistically significant difference CONCLUSIONS: Most of the emergency appendectomies were performed via laparoscopic technique, especially in young patients. Laparoscopy is safer and associated to better outcome. KEY WORDS: Alvarado Score, Laparoscopic appendectomy, Open appendectomy.

Laparoscopic and Open Surgical Treatment in Gastroduodenal Perforations: Our Experience.

INTRODUCTION: Peptic ulcer perforation (PPU) is a common surgical emergency and the mortality rate ranges 10% to 40%, especially in elderly patients. Laparoscopic repair achieved encouraging results. MATERIALS AND METHODS: We enrolled patients performing surgical repair for PPU from January 2007 to December 2015 in our surgical unit. The aim of this retrospective observational study was to compare the results of PPU laparoscopic repair with open technique. The following characteristics of patients were evaluated: age, sex and American Society of Anesthesiologists classification. The site and the diameter of perforation were recorded: gastric, pyloric, duodenal, and the location on the anterior or posterior wall. RESULTS: In total, 59 patients (39 males and 20 females) with a mean age of 58.85 years (±SD) were treated surgically. Laparoscopic repair was accomplished in 21 patients. The mean operative time for laparoscopic repair was 72 minutes (±SD), significantly shorter than open repair time (180 min ±SD). The results demonstrated that laparoscopic repair is associated with a shorter operative time, reduced postoperative pain (4.75 vs. 6.42) and analgesic requirements, a shorter hospital stay (7.5 vs. 13.1), and earlier return to normal daily activities. DISCUSSION: Laparoscopic surgery minimizes postoperative wound pain and encourages early mobilization and return to normal daily activities. The benefit of early discharge and return to work may outweigh the consumable cost incurred in the execution of laparoscopic procedures. CONCLUSIONS: Complications in both procedures are similar but laparoscopic procedure shows economic advantages for reducing postoperative hospital stay, postoperative pain, and for a good integrity of abdominal wall.

Intermittent pneumatic compression in laparoscopic surgery for prevention of deep vein thrombosis and cellular damage from iatrogenic compartment syndrome.

AIM: This study is aimed to evaluate the incidence of the postoperative deep vein thrombosis (DVT) and the cell damage from compartment iatrogenic syndrome, analyzing two groups of patients operated laparoscopically, one of which assisted with a Sequential Compression Device (SCD). MATERIAL OF STUDY: A patients' series submitted to laparoscopic surgery over a period at least 90 minutes. The venous flow in the lower limbs was detected with the Echo Colour Doppler method, and only one of the two groups was assisted with the SCD. RESULTS: Between November 2006 and October 2007, 35 patients were evaluated, 21 of them wew assisted with SDC and the remaining 14 patients were the control group. All patients had a follow-up was extended for 5 years at the interval of 7 days, 14 days, 30 days, 3 and 5 years. DISCUSSION: The results were confirmed that the application of SCD is able to neutralize the negative effect of the PNP reducing the possible risk of thromboembolic venous stasis and the improvement of lactic acid and of myoglobinemia are attributable to a reduction of preload. With the use of IPC, it decreases venous stasis, improves venous return and cardiac output increases, preventing cell damage by hypoperfusion. CONCLUSIONS: The use of a SCD applied to the lower limbs allows an increase in venous return from the lower limbs so reducing the risk of DVT. KEY WORDS: Cellular damage, DVT, Pneumoperitoneum.

A gas-inlet system coupled with a Knudsen cell mass spectrometer for high-temperature studies.

A gas-inlet system coupled with a Knudsen effusion mass spectrometer has been developed to study at high temperature the interaction of solids and vapors with reactive permanent gases, such as H(2) and O(2), directly introduced into the cell from external low-pressure reservoirs (pressure range: 10(-4) < p < 1 bar). By selecting the gas flow from the external reservoir the pressures of the gases inside the Knudsen cell can be quantitatively controlled over three orders of magnitude, approximately from 10(-8) to 5.10(-5) bar. Mixtures of two different gases can be introduced into the cell, controlling their partial pressures independently. The capabilities of the device have been tested with four gas-solid systems: PbO(s) + O(2)(g), GeO(2)(s) + O(2)(g), Ga(s) + H(2)(g) and Au(s) + H(2)(g), by studying the relevant high-temperature equilibria. The results obtained for the dissociation energies of the diatomic molecules PbO(g), GeO(g), GaH(g), and AuH(g) compare well with the literature data giving confidence in the reliability and versatility of the method. Preliminary experiments on the in situ formation of H(2)O(g) in the Knudsen cell by the introduction of controlled gaseous H(2)/O(2) mixtures are also presented.