Physical properties of high performance fluoride ion conductor BaSnF4 thin films by pulsed laser deposition

This article presents the results on the growth and characterization of BaSnF4 thin films on glass substrates prepared by pulsed laser deposition technique. The structural results of BaSnF4 thin film carried out by glancing angle X-ray diffraction technique indicates the formation of the film with similar structure (tetragonal, P-4/nmm) to the bulk target material. The absorption coefficient and band gap of the film is determined by suitable analysis of the transmittance spectra. The transport properties of the thin films are studied using impedance spectroscopy in the temperature range of 323-573 K. The frequency-dependent imaginary part of impedance plot shows that the conductivity relaxation is non-Debye in nature. The scaling behavior of the imaginary part of impedance at various frequencies indicates temperature-independent relaxation behavior

A laparovaginal strategy to avoid bladder injury during laparoscopic-assisted vaginal hysterectomy in cases with ventrofixed uterus following previous cesarean section

Ramkrishna Purohit, Jay Gopal Sharma, Devajani Meher, Sanjay Raosaheb Rakh, Minal Choudhary Department of Obstetrics and Gynecology, Purohit General Hospital, Bargarh, Orissa, India Background: Laparoscopic hysterectomy for benign indications in cases with ventrofixed uterus following previous cesarean section (CS) increases the surgeon’s concern of bladder injury. The present study describes a laparovaginal strategy to avoid bladder injury during laparoscopic-assisted vaginal hysterectomy (LAVH) in cases with ventrofixed uterus following previous CS.Methods: In a retrospective study conducted in our private general hospital, we included consecutive cases of laparoscopically confirmed ventrofixed uterus associated with previous CS. These were from the cases who underwent LAVH for benign indications. Cases with uterus size >16 weeks of gestation were excluded. Patients’ clinical, intraoperative and postoperative characteristics were studied to evaluate the feasibility of the described laparovaginal strategy to prevent bladder injury during LAVH in cases with ventrofixed uterus.Results: A total of 35 cases with ventrofixed uterus underwent LAVH during the study. Six (17.14%) cases had a history of one CS, while 29 (82.86%) cases had a history of previous two or more CSs. A supravesical loose fatty tissue plane (supravesical space) indicating reach to the bladder wall during laparoscopic lysis of the uterus from the anterior abdominal wall was successfully demonstrated in all the cases. The bladder flap preparation was avoided. Uterovesical adhesions were dissected by posteroanterior approach during vaginal phase of LAVH in all the cases. LAVH was successfully performed in all the cases. None of the cases had bladder injury, laparotomic conversion or other major complications. Mean operating time for LAVH was 149.71±38.36 minutes (70–200 minutes). Mean uterine specimen weight was 162.85±92.57 g (60–500 g). Mean postoperative hospital stay was 2.42±0.73 days (2–5 days).Conclusion: In spite of severe adhesions in cases with a ventrofixed uterus following previous CS, bladder injury can be avoided during LAVH by the described laparovaginal approach in the present study.Short synopsis: The described laparovaginal approach may avoid bladder injury during laparoscopic-assisted vaginal hysterectomy in cases with a ventrofixed uterus following previous cesarean section. Keywords: laparoscopic-assisted vaginal hysterectomy, ventrofixed uterus, previous cesarean section, supravesical plane, bladder injur

Completion of vaginal hysterectomy by electro surgery using anteroposterior approach in benign cases faced with obliterated posterior cul-de-sac

Ramkrishna Purohit, Jay Gopal Sharma, Devajani Meher, Sanjay Raosaheb Rakh, Surya Malik Department of Obstetrics and Gynaecology, Purohit General Hospital, Bargarh, India Background: Obliterated posterior cul-de-sac has been a real surgical challenge during vaginal hysterectomy. The present study demonstrates an anteroposterior approach to accomplish the vaginal hysterectomy in cases faced with an obliterated posterior cul-de-sac. Methods: In a retrospective study in private setup, 51 consecutive cases with obliterated posterior cul-de-sac during vaginal hysterectomy due to severe benign pelvic adhesions were studied to know the feasibility of the anteroposterior approach. The upper limit of uterus size was that of 16 weeks of gestation. Results: Vaginal hysterectomy was completed in 49 (96.08%) cases with obliterated posterior cul-de-sac due to severe benign pelvic adhesions. Two (3.92%) cases needed laparoscopic assistance to complete vaginal hysterectomy. Mean operation time was 109.92±40.13 (45–217) minutes due to the need for careful separation of adhesions from the uterus and indicated additional procedures. Mean weight of specimen uterus was 162±106.51 (40–460) grams. There was no major intra- or postoperative morbidity. Conclusion: Completion of vaginal hysterectomy was feasible using the anteroposterior approach in most of the cases with obliterated posterior cul-de-sac due to severe benign pelvic adhesions. Keywords: vaginal hysterectomy, obliterated posterior cul-de-sac, anteroposterior approach, difficult vaginal hysterectomy, severe pelvic adhesions, extraperitoneal uterosacral separation, sub-serosal morcellation, frozen pelvi

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