Objective To analyze the risk factors of postoperative vitreous hemorrhage (PVH) after pars plana vitrectomy (PPV) for vitreous hemorrhage (VH) secondary to retinal vein occlusion (RVO). Methods A retrospective case-control study. A total of 195 RVO patients (195 eyes) with VH were first treated with PPV from November 2015 to December 2021 were included in this study. There were 102 males (102 eyes) and 93 females (93 eyes), with an age of (62.93±9.78) years. The patients were divided into PVH group (17 patients, 8.72%) and non-PVH group (178 patients, 91.28%) according to the occurrence of PVH. The time of occurrence of PVH was (140.33±130.85) days after PPV. All eyes were performed 23G or 25G systematic PPV by the same doctor. During the operation, different types of intraocular tamponade and intravitreal injection of anti-vascular endothelial growth factor or triamcinolone acetonide after operation were selected according to the severity of retinopathy. The follow-up time was (9.45±6.68) months. The baseline systemic parameters, ocular parameters and intraoperative parameters affecting the occurrence of PVH were analyzed. Baseline systemic parameters included sex, age, diabetes mellitus and hypertension; ocular parameters included RVO type, lens status, VH course, preoperative best corrected visual acuity and intraocular pressure; intraoperative parameters included cataract phacoemulsification, removal of internal limiting membrane, type of intraocular tamponade, type of intravitreal injection drug at the end of operation, etc. Kaplan-Meier survival analysis, and Cox univariate and multivariate regression analysis were performed to analyze the risk factors of PVH after PPV in RVO with VH patients. Results In PVH group, the number of patients with diabetes was more than that in the non-PVH group, and the course of diabetes was longer, and differences were statistically significant. There were significant differences in RVO type, lens status and type of intraocular tamponade. Univariate Cox regression analysis showed that the combination with diabetes [odds ratio (OR)=2.724, 95% confidence interval (CI) 1.006-7.374, P=0.049], duration of diabetes (OR=1.071, 95%CI 1.013-1.134, P=0.016), central retinal vein occlusion (OR=4.387, 95%CI 1.421-13.546, P=0.010), intraocular lens (OR=3.493, 95%CI 1.229-9.925, P=0.019), and intraocular gas tamponade (OR=3.640, 95%CI 1.365-9.702, P=0.010) were associated with PVH. Multivariate Cox regression analysis showed that intraocular gas tamponade was independent risk factor for PVH. Conclusion Intraocular gas tamponade can increase the risk of PVH after PPV in patients with VH secondary to RVO.
Objective To investigate the effect of long-term intraocular retention of domestic perfluorocarbon liquid (PFCL) on morphology and histology of ocular tissues. Methods A total of 18 New-Zealand rabbits were randomly divided into 3 experimental groups, whose left eyes underwent intraocular injection with 0.3, 0.6, and 1.0 ml PFCL, respectively. All of the right eyes of the rabbits were in the control group. The morphological, electrophysiological and histological changes of the ocular tissue were observed 4, 8, and 12 weeks after the injection. Results No clinically significant retinopathy but only mild morphological changes were found in group 1 and 2, while obvious morphological and histological changes were found in group 3. Mild morphological and histological changes were found in all of the rabbits 4-8 weeks after the injection while significant ones were found 8-12 weeks after the injection. The results of electroretinography indicated a statistically significant decline of amplitude of b wave in group 3. Conclusions Long-term intraocular retention of few PFCL may cause mild histological changes but not affect the clinical function. Plentiful PFCL remains in eyes may lead to toxic reaction to the ocular tissue. (Chin J Ocul Fundus Dis, 2006, 22: 128-130)
Abstract： Objective To analyze risk factors associated with postoperative respiratory failure in patients with valvular surgery. Methods Between January 2001 and November 2010, clinical data of 618 patients with 339 males and 279 fameles at age of 10-74（44.01±13.95）years,undergoing valvular operations were investigated retrospectively. We divided the patients into two groups according to the presence （74 patients）or absence（544 patients）of postoperative respiratory failure. Its risk factors were evaluated by univariate and multivariate logistic regression analysis. Results The hospital mortality rate of valvular surgery was 6.1%（38/618）.The morbidity rate of respiratory failure was 12.0%（74/618） with hospital mortality rate at 17.6%（13/74） which was significantly higher than those patients without postoperative respiratory failure at 4.6%（25/544, χ2=18.994, P=0.000）. Univariate analysis showed age＞ 65 years（P=0.005）, New York Heart Association（NYHA）classⅣ（P=0.014）, election fraction＜ 50.0%（P=0.003）, cardiopulmonary bypass time＞ 3 h（P=0.001）, aortic cross clamping time＞ 2 h（P=0.008）, concomitant operation（ valvular operation with coronary artery bypass grafting, Bentall or radiofrequency ablation maze operation（P=0.000）, reoperation（P=0.012）, postoperative complications （P=0.000）, and blood transfusion＞ 2 000 ml（P=0.000） were important risk factors for postoperative respiratory failure. Multivariate logistic regression showed that concomitant operation（P=0.003）, reoperation（P=0.010）, postoperative complications（P=0.000）, and blood transfusion＞2 000 ml（P=0.012）were significant independent predictive risk factors. Conclusion This study suggest that patients with predictive risk factors of postoperative respiratory failure need more carefully treated. The morbidity of these patients would be reduced through improving perioperative management, shortening cardiopulmonary bypass time and reducing postoperative complications.
Objectives To identify the effect of procalcitonin (PCT) on the choice of operating time for severe acute pancreatitis and assessment of postoperative complications by monitoring the level of serum PCT and recording the incidence of postoperative complications. MethodsNinety-three patients who underwent debridement and drainage of infected necrosis from Sep. 2009 to Dec. 2011 were included. Serum PCT was tested on the day of admission (0 day), one week after admission, one day before surgery, one day after surgery, and one week after surgery. According to the level of serum PCT, all the 93 patients were divided into 3 groups:low level group (PCT < 2 ng/mL), middle level group (PCT 2-10 ng/mL), and high level group (PCT > 0 ng/mL). Postoperative complications were also recorded. ResultsThe incidence of postoperative complications was 19.4% (18/93). There were postoperative bleeding in 13 patients, intestinal fistula in 14 patients, pancreatic fistula in 18 patients, pulmonary infection in 4 patients, residual abscess in 10 patients; re-operation in 15 patients, and death in 8 patients (the death rate was 8.6%). Besides the pulmonary infection, and grade A and C of pancreatic fistula, the incidence of various complications in middle level group and high level group were lower than low level group (P < 0.05). Patients with complications had significantly higher PCT value in one week after admission than onset (P < 0.05). PCT value was higher in the patients with intestinal fistula and residual abscess on one day after operation than on one day before operation (P < 0.05). Patients who died or with re-operation had significantly higher PCT value in one week after operation than on one day after operation (P < 0.05). In the dead patients, the serum PCT sustained at a high level after operation. ConclusionsThe level of serum PCT is correlated with the incidence of postoperative complications. Dynamic monitoring the level of serum PCT can guide the choice of operative time and assessment of postoperative complications including intestinal fistula, pulmonary infection, and death, which can greatly improve the prognosis of SAP.
Objective To observe the therapeutic effect of poly tetrahydrofurfuryl co-lactic acid(copolymer C4) as the biodegradable vitreous substitutes on rhegmatogenous retinal detachment.Methods Vitreoretinal surgery with copolymer C4 tamponades was performed on 32 pigmented rabbits (64eyes) with rhegmatogenous retinal detachment. The rate of reattached retina and the post operative cornplications were observed.Results Three months after the operation, reattached retina was found in 96. 4%, glaucoma in 5.5%, cataract in 10.9%, and copolymer emulsion in 10.2% of all the eyes.Conclusion copolymer C4 may withstand the retinal tear effectively for 3 months, and can be a valuable vitreous substitutes. (Chin J Ocul Fundus Dis，2004，20：27-28)
Objective To investigate the application of transverse fascia in inguinal hernia repair. Methods In this study, 617 patients underwent inguinal hernia repair between January 1990 and December 2005 in our hospital were included, which were divided into two groups according to different operative ways: transverse fascia method group (n=337) and Bassini method group (n=280). Then intraoperative results, postoperative complications, and rehabilitated results of patients in two groups were compared. Results Compared with Bassini method group, the patients in transverse fascia method group did not show significant difference in operative time and blood loss during operation (Pgt;0.05). The differences of severe postoperative pain, testicular swelling, the time of the body’s restore for normal activities, and recurrence rate of patients between two groups were significant (Plt;0.05), while the difference of hematoma of scrotum and infection of incisional wound (Pgt;0.05). Conclusion The strengthening of posterior wall by transverse fascia and reconstruction of inner ring is a simple and effective method for inguinal hernia repair.
Objective To evaluate the effectiveness and safety of dexmedetomidine for postoperative sedation in cardiac patients. Methods Such databases as PubMed, EBSCO, Springer, Ovid, The Cochrane Library, CBM, CNKI, VIP and WanFang Data were searched electronically from the date of their establishment to May 2012, and other relevant journals and references of the included literature were also searched manually. Two reviewers independently screened the studies in accordance with the inclusion and exclusion criteria, extracted data and assessed methodology quality. Then the meta-analysis was performed using RevMan 5.1software. Results A total of 8 randomized controlled trials (RCTs) involving 1 157 patients were included. The Jadad scores of 7 RCTs were more than 3, and only 1 RCT scored 2. The results of meta-analysis showed that compared with the control group, dexmedetomidine significantly raised peripheral oxygen saturation (RR=0.90, 95%CI 0.31 to 0.49, P=0.003), decreased the incidence of average heart rate (RR=–5.86, 95%CI –7.31 to −4.40, Plt;0.000 01), ventricular tachycardia (RR=0.27, 95%CI 0.08 to 0.88, P=0.03), delirium (RR=0.28, 95%CI 0.16 to 0.48, Plt;0.000 01) and postoperative hyperglycemia (RR=0.57, 95%CI 0.38 to 0.85, P=0.006), and reduced the number of patients who needed vasoactive agents such as epinephrine (RR=0.53, 95%CI 0.29 to 0.96, P=0.04) and β-blocker (RR=0.60, 95%CI 0.38 to 0.94, P=0.03). However, it failed to shorten the time of both ICU stay (RR=−1.24, 95%CI −4.35 to 1.87, P=0.43) and mechanical ventilation (RR=−2.28, 95%CI −5.13 to 0.57, P=0.12), increase mean artery pressure (RR=−2.78, 95%CI −6.89 to 1.34, P=0.19), and well control postoperative nausea, vomiting and atrial-fibrillation. There were no significant differences between the two groups in myocardial infarction, acute cardiac failure, acute kidney failure, and mortality rate. Conclusion For postoperative sedation in cardiac patients, dexmedetomidine can effectively stabilize hemodynamic indexes, and reduce tachycardia, delirium, postoperative hyperglycemia and vasoactive agents. However, it has no marked influence on the prognosis. For the quantity and quality limitation of included studies, this conclusion needs to be proved by performing more high quality and large sample RCTs.
Objective To approach the clinical characters and therapeutic methods of retinal detachment(RD) after extracapsular catarat extraction(ECCE)with posterior chamber intraocular lens(PCIOL). Methods Sixty eight cases(68 eyes) of RD after ECCE with PCIOL were treated with sclerel buckling,microvitreo retinal surgery and intraocular gas,silicone oil injection and were reviewed. Results The retinas were totally reattached in 65 eyes(95.59%) which dropped to 94.12% in 6-60 months postoperatively.The resultant rate of visual acuity of the eyes with 0.1 or better was 79.41%,with 0.3 or better was 26.47%. Conclusion The main causes of RD after ECCE with PCIOL are similar to those of general RD,and most cases of RD after ECCE with PCIOL can be cured by surgical treatment. (Chin J Ocul Fundus Dis,1998,14:167-169)
Objective To evaluate the clinical and histopathological manifestations of sympathetic ophthalmia after pars plana vitrectomy. Methods The clinical data of 8 patients with sympathetic ophthalmia out of 13 000 who underwent pars plana vitrectomy from Jan 1998 to Dec 2004 were retrospectively analyzed. In the 8 patients, 3 evoked eyes underwent ophthalmectomy and were observed histopathologically. Results The incidence of sympathetic ophthalmia was 0.06%. The time from vitrectomy to the occurrence of sympathetic ophthalmia ranged from 7 to 150 days, with a median of (77.8plusmn;50.8) days. All patients had decrease of visual acuity of the sympathetic eye, visual distortion, red eye, and opthalmalgia. The visual acuity was hand moving to 0.5 in the sympathetic eyes, and no light perception to 0.04 in the evoked eyes. Other clinical manifestations included binocular mutton-fat keratic precipitates, anterior chamber flare and cells, vitreous opacity, optic-disc edema and hyperaemia, and retinal edema at the posterior pole; 2 sympathetic eyes had exudative retinal detachment. The visual acuity increased to 0.4-1.2 in sympathetic eyes and light perception -0.25 in evoked eyes in all of the patients after treatment with oral administration of prednisone 1.0-1.5 mg/kg. In the 3 patients who had undergone ophthalmectomy because of total loss of visual acuity, and the pathological examination revealed infiltrated and thickeduvea due to lymphocytes, epithelioid cell nodules, infiltration of lymphocytes to sclerotic passages, and ocular atrophy were observed. Conclusion The incidence of sympathetic ophthalmia is 0.06%, which happened within 3 months after vitrectomy. The clinical manifestations and results of histological examinations accords with the characteristics of sympathetic ophthalmia. (Chin J Ocul Fundus Dis, 2007, 23: 112-114)
OBJECTIVE: To evaluate the results of limb function and the methods of bone and soft tissue reconstruction of patients treated with allografting. METHODS: From May 1992 to January 1999, 90 patients suffered from bone malignant tumor were treated with allografting in different methods of internal fixations. The average follow-up was 37.5 months. The limb postoperative function, complications related to different surgical methods were compared according to Enneking evaluation system. RESULTS: Skin necrosis, infection, non-union, fracture of allograft were the main complications which affect patients’ limb postoperative functions. Of the 90 fresh-frozen allografting procedures, the final results of operation showed that hip joints and knee joints were better than the shoulder joints. More than 80% of the patients treated with interlocked intramedullary nail and allograft-prosthesis combination led to an over-all result that was excellent and good. Interlocked intermedullary nail was of recommended method of internal fixation. Early exercises of operative limbs could promote function recovery. CONCLUSION: Using of interlocked intramedullary nail and allograft-prosthesis combination are of recommended operation method and can be applied with better results, and early exercises of operative limbs will lead to better functions.