scholarly journals Evaluation of a Novel Blue-Colored Ophthalmic Viscoelastic Device Applied during Phacoemulsification in Eyes with Pseudoexfoliation Syndrome

2019 ◽  
Vol 10 (1) ◽  
pp. 101-109
Author(s):  
Andreas F. Borkenstein ◽  
Eva-Maria Borkenstein

Recently, a new development in the field of ophthalmic viscoelastic devices (OVDs) has been introduced. The blue-colored OVD Pe-Ha-Blue® PLUS combines the viscoelastic properties of OVD together with trypan blue for better visualization during surgery. The objective of this case series is to investigate whether the use of a blue-colored OVD during cataract surgery in patients with pseudoexfoliation syndrome (PXF) and narrow pupils (miosis) has advantages over the use of a clear standard OVD in combination with trypan blue. We included 52 eyes of 52 consecutive cataract patients diagnosed with PXF. Study participants were divided into two groups of 26 patients each, depending on which OVD was used during surgery (group A: blue-colored OVD; group B: standard clear OVD). Intraoperatively, we evaluated the operation time (surgery start to the beginning of phacoemulsification) and the surgeon’s satisfaction with the surgical workflow. Postoperative examinations were performed 6 h, 20 h, and 4 weeks after surgery and included corrected distance visual acuity (CDVA) and intraocular pressure (IOP). Our results show that there was a statistically significant time gain in group A in terms of surgery time. In addition, findings on surgeon satisfaction, postoperative CDVA and IOP suggest further benefits in group A. We discuss further properties and possible advantages which may result from the use of a blue-colored OVD. In summary, a blue-colored viscoelastic device can be a helpful alternative to clear OVD especially in challenging cases to improve the surgical workflow and make the whole procedure even safer and faster.

2019 ◽  
Vol 6 (1) ◽  
pp. 8-13
Author(s):  
Birendra Kumar Yadav ◽  
Robin Bahadur Basnet ◽  
Anil Shrestha ◽  
Parish Mani Shrestha

Introductions: Fever and sepsis after percutaneous nephrolithotomy (PCNL) secondary to urinary tract infection is a major determinant of overall post PCNL complications. This study aims to analyse infective complications after PCNL in relation to pre-operative urine culture status. Methods: A comparative analysis of post PCNL infective complications in pre-operative urine culture positive (Group A) and negative (Group B) was done for one year during June 2017 to May 2018 in department of urology, Bir Hospital, National Academy of Medical Sciences, Kathmandu, Nepal. Demographics, stone characteristics, mean operative time, post-operative hospital stay and post-operative complications as per Modified Clavien classification were compared between the two groups. Results: Out of total 136 PCNL patients, 51 were in Group A and 85 in Group B. Infective complications were significantly high, 28 (54.90%) in group A compared to 20 (23.53%) in group B, p=0.004. The most common isolate was Escherichia coli 19 (37.25%), sensitive to amikacin 37 (72.55%). The mean operation time, transfusion and hospital stay was not statically different in two groups. Morality occurred in 1 (1.96%) in group A. Conclusions: Infective complications were significantly high after PCNL in patients with preoperative positive urine culture, even when it was treated to sterile with sensitive antibiotics, compared to patients with preoperative negative urine culture.


2021 ◽  
pp. 039156032110016
Author(s):  
Francesco Chiancone ◽  
Marco Fabiano ◽  
Clemente Meccariello ◽  
Maurizio Fedelini ◽  
Francesco Persico ◽  
...  

Introduction: The aim of this study was to compare laparoscopic and open partial nephrectomy (PN) for renal tumors of high surgical complexity (PADUA score ⩾10). Methods: We retrospectively evaluated 93 consecutive patients who underwent PN at our department from January 2015 to September 2019. 21 patients underwent open partial nephrectomy (OPN) (Group A) and 72 underwent laparoscopic partial nephrectomy (LPN) (Group B). All OPNs were performed with a retroperitoneal approach, while all LPNs were performed with a transperitoneal approach by a single surgical team. Post-operative complications were classified according to the Clavien-Dindo system. Results: The two groups showed no difference in terms of patients’ demographics as well as tumor characteristics in all variables. Group A was found to be similar to group B in terms of operation time ( p = 0.781), conversion to radical nephrectomy ( p = 0.3485), and positive surgical margins ( p = 0.338) while estimated blood loss ( p = 0.0205), intra-operative ( p = 0.0104), and post-operative ( p = 0.0081) transfusion rates, drainage time ( p = 0.0012), pain score at post-operative day 1 (<0.0001) were significantly lower in Group B. The rate of enucleation and enucleoresection/polar resection was similar ( p = 0.1821) among the groups. Logistic regression analysis indicated that preoperative factors were not independently associated with the surgical approach. There was a statistically significant difference in complication rate (<0.0001) between the two groups even if no significant difference in terms of grade ⩾3 post-operative complications ( p = 0.3382) was detected. Discussion: LPN represents a feasible and safe approach for high complex renal tumors if performed in highly experienced laparoscopic centers. This procedure offers good intraoperative outcomes and a low rate of post-operative complications.


2018 ◽  
Vol 80 (05) ◽  
pp. 441-448
Author(s):  
E. Archavlis ◽  
L. Serrano ◽  
F. Ringel ◽  
S. R. Kantelhardt

Abstract Objective The aim of this study was to compare tentorial incision (group A) versus retraction and tack up suture (group B) of the tentorial edge during the subtemporal approach for surgery in the high basilar region. Design 24 cadaveric dissections and 4 clinical cases of aneurysms of the high basilar region are presented. Assessment included visibility and operability afforded by either tentorial incision creating a dural flap (group A) or retraction of the tentorial edge and tethering with a suture (group B). Four patients, two with superior cerebellar artery aneurysms and two with proximal posterior cerebral artery aneurysms were treated with each approach. Results In the quantitative evaluations, we found no significant difference in the exposure of the posterior cerebral, superior cerebellar, and perforant arteries as well as surgical working area provided by either approach. However, tentorial incision allowed a significantly greater exposure of the basilar artery and the fourth cranial nerve (both p < 0.001). Concerning operability, tentorial incision provided no objective advantage for direct clipping of the high basilar region (groups A vs. B, p > 0.05). Subjectively, clipping of the high basilar segment was feasible using tentorial tethering only. Conclusion Retraction of the free edge of the tentorium downward by tethering with a suture is simple and fast method for exposure of aneurysms in the high basilar region when the pathology does not require a proximal control. In our data the rather more invasive and time consuming tentorial incision provided an additional objectified advantage only for placement of a proximal temporary clip.


2019 ◽  
Author(s):  
Yanping Zeng ◽  
Peng Cheng ◽  
Jiulin Tan ◽  
Zhilin Li ◽  
Yuan Chen ◽  
...  

Abstract Purpose A multicentre, retrospective study was conducted to evaluate the safety and efficacy of different surgical techniques for thoracolumbar junction (T12-L1) tuberculosis. Methods The medical records of thoracolumbar junction tuberculosis patients (n = 257) from January 2005 to January 2015 were collected and reviewed. A total of 45 patients were operated on by an anterior approach (Group A), 52 by a combined anterior and posterior approach (Group B) and 160 by a posterior approach (Group C). Anti-tuberculosis therapy was performed both before and after surgery. Clinical outcomes, laboratory indexes and radiological results of the three groups were compared. Results All three surgical approaches achieved bone fusion, pain relief and neurological recovery. The mean loss of correction in group A at last follow-up was higher than in groups B and C (P < 0.05), and the difference between groups B and C was not significant (P > 0.05). The mean operation time and blood loss in group B were greater than in groups A and C. Conclusions For patients with thoracolumbar junction (T12-L1) tuberculosis, the posterior-only approach is superior to the anterior-only approach in the correction of kyphosis and maintenance of spinal stability. The posterior-only approach is recommended because it achieves the same efficacy as the anterior-only or combined approach but with shorter operation times, less trauma and less blood loss. Keywords Spinal tuberculosis; Thoracolumbar junction; Three approaches.


2013 ◽  
Vol 12 (4) ◽  
pp. 224-232
Author(s):  
Gintaras Simutis ◽  
Mantas Drungilas ◽  
Pavel Petrik ◽  
Eglė Petrik ◽  
Virgilijus Beiša ◽  
...  

Background / objectiveThe study was carried out to evaluate the potential use of laparoscopic simulators to enhance basic laparoscopic skills until proficiency is reached.Materials and methodsThe study participants were divided into two groups according to their experience in laparoscopic procedures: no prior experience (group A; n = 16) and laparoscope navigation experience (group B; n = 16). All the participants performed nineattempts of three basic laparoscopic skill tasks (“Instrument navigation”, “Cutting”, “Clip applying”) on the LapSim® simulator during three sessions within one month. The distribution of practice sessions was standardized by performing three attemptsfor each task per session and no more than one session per week. The assessment of laparoscopic skills was based on the cumulative score for each task measured by the computer system.ResultsTrainees in the group A were younger (22.2 ± 1.3 vs. 26.1 ± 1.3 years, P < 0.001). There were statistically significant differences in cumulative scores for all three tasks after the first five attempts between the two groups (P < 0.001). Comparison of thecumulative scores for the task “Instrument navigation” after the sixth attempt (P = 0.073), for the task “Clip applying” after the seventh attempt (P = 0.287), and for the task “Cutting” after the eighth attempt (P = 0.080) showed no significant differences among the study groups.ConclusionsThe results indicated that a group of trainees with no prior laparoscopic experience acquired the basic laparoscopic skills significantly faster. Proficiency in the laparoscopic basic tasks was achieved within 6–8 repetitions in both groups. These findings suggest that training of practical skills in using laparoscopic simulators should be integrated into medical education much earlier.Key words: surgical education, simulation, laparoscopy, virtual reality simulator, LapSimBazinių laparoskopinių įgūdžių įgijimas studijuojant mediciną TikslasAtlikti tyrimą, siekiant įvertinti kompiuterinių laparoskopinių simuliatorių naudojimą medicinos studijoms mokant pagrindinių laparoskopinių operacijų įgūdžių, kol bus įgyta reikiama patirtis.MetodikaTyrimo dalyviai pagal patirtį buvo suskirstyti į dvi grupes: vienos grupės tiriamieji neturėjo jokios išankstinės laparoskopinių operacijų patirties (A grupė, n=16), o kitos grupės turėjo tik navigacijos laparoskopu patirties (B grupė, n=16). Visi dalyviai pertrejas pratybas su laparoskopiniu virtualiu simuliatoriumi LapSim® atliko trijų pagrindinių laparoskopinių užduočių („Instrumentų navigacija“, „Pjovimas“, „Kabučių uždėjimas“) devynis bandymus. Kiekvieną užsiėmimą atskira užduotis buvo kartojamatris kartus, o užsiėmimas vyko ne dažniau nei kartą per savaitę. Vertintas galutinis užduoties rezultatas. Laparoskopinių operacijų įgūdžiai vertinti kompiuterine sistema pagal išvestinį kaupiamąjį kiekvienos užduoties balą.RezultataiA grupės dalyviai buvo jaunesni (22,2±1,3 vs. 26,1±1,3 metų, p<0,001). Išanalizavus visų trijų užduočių kaupiamuosius balus po pirmųjų penkių bandymų, abi grupės skyrėsi statistiškai reikšmingai (p<0,001). Tyrimą tęsiant ir lyginant išvestinį kaupiamąjįbalą atliekant užduotį „Instrumentų navigacija“ po šešto bandymo (p=0,073), užduotį „Kabučių uždėjimas“ po septinto bandymo (p=0,287), užduotį „Pjovimas“ po aštunto bandymo (p = 0,080), jokių reikšmingų skirtumų tarp tiriamų grupių nerasta.IšvadosTyrimo rezultatai parodė, kad net be laparoskopinių operacijų patirties tokių operacijų pagrindinius įgūdžius laparoskopiniu simuliatoriumi įgyjama greičiau. Chirurginės simuliacijos užduočių kartojimas iki 6–8 bandymų leidžia įgyti gerus pagrindiniųlaparoskopinių operacijų įgūdžius. Šie rezultatai rodo, kad praktinių įgūdžių mokymas naudojant laparoskopinį simuliatorių turėtų būti įtrauktas į medicinos studijų programą.Reikšminiai žodžiai: chirurgijos studijos, simuliacija, laparoskopija, virtualios realybės simuliatorius, LapSim.


2018 ◽  
Vol 31 (Supplement_1) ◽  
pp. 67-67
Author(s):  
Kazuto Tsuboi ◽  
Nobuo Omura ◽  
Fumiaki Yano ◽  
Masato Hoshino ◽  
Se-Ryung Yamamoto ◽  
...  

Abstract Background Erosive gastro-esophageal reflux disease (e-GERD) is associated with various symptoms caused by reflux of acid and gastric contents from the stomach to the esophagus. In general, it seems that as the duration of the disease is longer, surgical outcomes are inferior because of disease progression. The aim of this study is to evaluate the relationship between the disease duration and surgical outcomes of laparoscopic fundoplication (LF). Methods Two hundred and fifty-one (mean age was 53.4 years, male in 166) patients with e-GERD who underwent LF as an initial operation at our institution were extracted from the database. E-GERD was defined as equal to or more than grade A esophagitis by Los Angeles classification. These patients were divided into three groups by the length of disease duration: less than two years in Group A (n = 104), two to 5 years in Group B (n = 68) and equal to or more than 5 years in Group C (n = 79). We analyzed patients’ background, pre-operative symptoms, surgical outcomes, patients’ satisfaction and post-operative course. Before surgery, a standardized questionnaire was used to assess the degree of frequency and severity of symptoms (heartburn, regurgitation, dysphagia, vomiting and chest pain). Moreover, satisfaction with the operation was evaluated using the standardized questionnaire. Results Age and degree of acid reflux by pH-metry were significantly different among the three groups (P = 0.0054 and 0.0345, respectively). As to the pre-operative symptom score, the severity score of heartburn and the frequency score of regurgitation were significantly lower in Group A (P = 0.0225 and 0.031, respectively). Although operation time was significantly difference among the three groups (P = 0.0423), there were no differences in intraoperative blood loss, occurrence of peri-operative complications, post-operative course and patients’ satisfaction. Conclusion Although the patients who suffered equal to or over two years had more severe heartburn and regurgitation because of prolonged acid reflux, the duration of the disease does not seem to affect the surgical outcomes. Disclosure All authors have declared no conflicts of interest.


2018 ◽  
Vol 2018 ◽  
pp. 1-4 ◽  
Author(s):  
Takayuki Baba ◽  
Tomohiro Nizawa ◽  
Toshiyuki Oshitari ◽  
Shuichi Yamamoto

Purpose. To compare the visual and surgical outcomes after a reuse or a replacement of a dislocated in-the-bag intraocular lens (IOL). Methods. This was a retrospective, nonrandomized case series at a single ophthalmological institution. Cases with an in-the-bag dislocation of an IOL were treated by pars plana vitrectomy and the reuse or the replacement of the IOL. The lens was held by intrascleral fixation of the haptics of the IOL under both conditions. The same dislocated IOL was reused in 6 eyes (group A) or it was replaced with another IOL in the other 9 eyes (group B). The pre- and postoperative parameters analyzed included the visual acuity, refractive error, corneal endothelial cell density, and intraocular pressure (IOP). Results. There was no significant difference between the two groups in the postoperative visual acuity (P=0.388), refractive error (P=0.955), IOP (P=0.529), and endothelial cell loss (P=0.940). A breakage or a tilting of the IOL was observed and required replacement in three eyes in the reuse group (P=0.044). Conclusions. Half of the cases with reused in-the-bag dislocated IOL had a breakage or a tilting of the IOL. The replacement of the in-the-bag dislocated IOL is better than the reuse of the IOL with intrascleral haptics fixation.


BMC Urology ◽  
2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Wang Zhenxing ◽  
Sun Zhaolin ◽  
Yang Xiushu ◽  
Luo Guangheng ◽  
Tian Ye ◽  
...  

Abstract Background The aim of the present study was to establish an animal model of Yang-Monti ileal ureter-bladder anastomosis and Yang-Monti ileal ureter-ureteral anastomosis and compare the advantages and disadvantages of the two surgical methods. Methods Fourteen 12-month-old male Chinese miniature pigs weighing 21 ± 1.38 kg were randomly divided into two groups. Group A (n = 7) underwent end-to-end anastomosis of the left Yang-Monti ileal ureter, left ileal ureter and left lower ureter; group B (n = 7) underwent anastomosis of the left Yang-Monti ileal ureter, left ileal ureter and bladder. In both groups, the contralateral kidney was removed at 1 week postoperatively. The incision length and operation time of the two groups were compared. Changes in serum creatinine and urea nitrogen were observed preoperatively, and at 2, 6 and 12 weeks postoperatively. Venous pyelography and cystography were performed at 12 weeks postoperatively to determine the ureteral patency and vesicoureteral reflux. At 12 months postoperatively, urinary culture was performed, and the diameter and histological changes of the intestinal ureter were assessed. Results Surgery was successfully completed in all 14 pigs. In group A, one pig died due to an anesthetic accident, and one pig died from a lung infection on postoperative day 4. In group B, one pig died from adhesive intestinal obstruction on postoperative day 7. The overall survival rate was 78.6%, and the 11 surviving pigs had no urinary or intestinal fistulae. Compared with group B, group A had a significantly longer surgical incision (30.86 ± 2.41 cm versus 26.71 ± 3.64 cm; p = 0.01) and shorter operation time (181.29 ± 15.10 min versus 157.71 ± 20.49 min; p = 0.02). The serum creatinine and urea nitrogen concentrations did not significantly differ between groups. All pigs had normal renal function pre- and postoperatively. There was no stenosis or obstruction on venous pyelography. The narrowest diameter of the ureter was significantly smaller in group B (5.90 ± 0.30 mm) than in group A (7.26 ± 1.06 mm; p = 0.01), but no contrast agent returned to the upper urinary tract in either group. Escherichia coli was detected on urine culture. In group A, one pig had obstruction of the ureteral ureter, while another had stenosis of the lower ureteral anastomosis. In group B, one pig had pelvic and intestinal ureteral dilatation; however, all anastomoses were patent. The ileal ureteral diameter was significantly larger in group A (9.40 ± 2.35 mm) than group B (6.62 ± 0.37 mm; p = 0.02). Two pigs in group A had separation of the transitional epithelium and columnar epithelial mucosa, with granulation tissue hyperplasia. The pigs with stenosis and obstruction had smooth fibrous tissue and smooth muscle of the anastomosis. In both groups, the two types of epithelial tissue were close together, and the intestinal villi were mildly atrophied and shortened. Conclusions An animal model of Yang-Monti ileal ureter-bladder anastomosis was successfully established. Compared with Yang-Monti ileal ureter-ureteral anastomosis, Yang-Monti ileal ureter-bladder anastomosis is simpler, more reliable, and results in fewer complications.


2019 ◽  
Vol 26 (5) ◽  
pp. 551-559
Author(s):  
JunChuan Xu ◽  
JiSheng Lin ◽  
Jian Li ◽  
Yong Yang ◽  
Qi Fei

Objective. In this randomized, nonblinded, controlled study, the feasibility and precision of “targeted percutaneous vertebroplasty” (“targeted PVP”) for osteoporotic vertebral compression fracture (OVCF) was evaluated. Methods. A total of 42 patients, aged 50 to 87 years, with OVCF were randomly divided into 2 groups: A and B. Group A underwent “targeted PVP,” and group B underwent traditional PVP with the guidance of C-arm fluoroscopy. Fluoroscopy times for skin puncture points (FTSPP), total radiation doses (TRD), total fluoroscopy times (TFT), and operation time were set as the main evaluation indicators. Results. FTSPP (1.52 ± 0.51 in group A vs 6.62 ± 2.58 in group B, U < .001), TRD (6.26 ± 1.51 in group A vs 11.32 ± 4.21 in group B, P < .001), TFT (16.57 ± 2.79 in group A vs 26.05 ± 6.18 in group B, P < .001), and operation time (20.05 ± 3.38 in group A vs 25.43 ±5.11 in group B, U < .001) were statistically different in the 2 groups. The incidence of cement leakage that occurred in group A (1/21, 4.76%) was significantly less than that in group B (9/21, 42.9%, P < 0.05). Conclusions. “Targeted PVP” may achieve (1) less skin positioning fluoroscopy times, less total fluoroscopy times and dose, shorter operation time, which is more precise than traditional PVP; (2) less incidence of cement leakage; and (3) visualization of the fractured vertebra, which is probably more valuable for the treatment of complicated OVCF patients.


Author(s):  
Emir Mujanovic ◽  
Midhat Nurkic ◽  
Jasmin Caluk ◽  
Ibrahim Terzic ◽  
Emir Kabil ◽  
...  

Objective The purpose of this randomized study was to evaluate the effect on graft patency by adding clopidogrel to aspirin in off-pump coronary artery bypass (OPCAB) grafting and the possible side effects of such therapy. Methods Twenty patients who underwent standard OPCAB through median sternotomy were randomized immediately after surgery in two groups. Patients in group A (n = 10) received 100 mg of aspirin starting preoperatively, continuing indefinitely. Patients in group B received 100 mg of aspirin and, in addition, 75 mg of clopidogrel starting immediately after the operation and for 3 months. Postoperative bleeding and other perioperative parameters were compared. Angiography was repeated 3 months after surgery to determine the patency and quality of grafts. Results Preoperative risk factors were similar in the two groups. There was no significant difference in average number of distal anastomosis (P = 0.572), operation time (P = 0.686), postoperative bleeding (P = 0.256), ventilation time (P = 0.635), and intensive care unit stay (P = 0.065). Length of stay was shorter in group B (P = 0.024). There was no postoperative complication in either groups. Eight of 27 grafts in group A and 2 of 29 grafts in group B (P = 0.037) were occluded at the time of control angiography. Conclusions Early administration of a combined regimen of clopidogrel and aspirin after OPCAB grafting is not associated with increased postoperative bleeding or other major complications. Despite the small number of patients in this study and small number of examined grafts, the results suggest that the addition of clopidogrel may increase graft patency after OPCAB grafting.


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