Analysis of Preoperative Factors Influencing Hypoglossal-facial 'Side'-to-side Neurorrhaphy for Facial Paralysis after Excision of Acoustic Neuroma / 生物医学与环境科学（英文）

Objective@#Hypoglossal nerve-facial nerve 'side'-to-side neurorrhaphy is a new method for the treatment of potential incomplete facial paralysis after acoustic neuroma. However, there are differences in postoperative outcomes among patients. This study analysed preoperative factors that may influence the treatment outcomes of neurorrhaphy.@*Methods@#We performed a retrospective study of 53 patients who were treated by neurorrhaphy for facial paralysis after acoustic neuroma resection. After a one-year follow-up period, the patients were divided into two groups according to facial functional outcome: better recovery or ordinary recovery. We analysed the following factors: gender, age, tumour size, and characteristics, tumour adhesion to the facial nerve, the duration of facial paralysis (DFP) and F wave appearance prior to neurorrhaphy (F wave).@*Results@#Univariate analysis showed significant differences between the two groups in DFP ( = 0.0002), tumour adhesion to the facial nerve ( = 0.0079) and F waves ( = 0.0048). Logistic regression analysis of these factors also showed statistical significance with values of 0.042 for the DFP, 0.043 for F waves, and 0.031 for tumour adhesion to the facial nerve.@*Conclusions@#Tumour adhesion to the facial nerve, F waves appearance and DFP prior to neurorrhaphy are the predominant factors that influence treatment outcomes.

Analysis of Perioperative Complications Following Radical Cystectomy – Our Experience in a South Indian Tertiary Urology Centre

Introduction: Bladder cancer is one of the common urologicalmalignancy. The aim of this study was to analyze perioperativecomplications and mortality in our institute following radicalcystectomy and urinary diversion.Material and methods: Thirty four patients presented withmuscle invasive bladder cancer for radical cystectomy tourology department between August 2009 and December2011 was included in the study.Results: Patients mean age was 56.9 Years. There was higherpercentage of Male patients compared to Female patientswith ratio of 4.6:1 and most of the patients had ASA score <=2.0. Mean operating time and length of hospital stay was 4.2hours and 10.2 days respectively. Perioperative complicationswas observed in 32.35% of patient cohort and perioperativemortality rate of 2.94%. The most frequent complicationswere ileus (6 patients) followed by wound infection / wounddehiscence (4 patients). No preoperative factors predictedcomplications were found except for age.Conclusion: In our study, age was the only preoperativefactors predicted complication and mortality rate. With properselection of patients, and preoperative evaluation, surgicaltechnique and better postoperative care, Radical cystectomywith urinary diversion can be safely done in selected patientswith acceptable morbidity and mortality.

Preoperative Korean Shoulder Scoring System Correlates with Preoperative Factors of Rotator Cuff Tears

BACKGROUND: The Korean Shoulder Scoring System (KSS) is a reliable and valid procedure for discriminative assessment of the clinical status of patients with rotator cuff tears. This study evaluates the correlation between the preoperative KSS and factors in patients with rotator cuff tears. METHODS: From November 2009 to June 2016, 970 patients who underwent arthroscopic rotator cuff repair were retrospectively evaluated. A total of 490 patients met the study criteria. Preoperative factors included age, sex, symptom duration, mediolateral (ML) and anteroposterior (AP) tear size, acromiohumeral distance (AHD), tangent sign, tendon involvement (type I, supraspinatus; type II, supraspinatus and subscapularis; type III, supraspinatus and infraspinatus; type IV, all 3 tendons), fatty infiltration of rotator cuff muscles (group I, Goutallier stages 0 and 1; group II, Goutallier stages 2, 3, and 4), and KSS. RESULTS: Old age, ML tear size, and AP tear size negatively correlated with the preoperative KSS (p < 0.001). AHD showed a positive correlation with the preoperative KSS (p < 0.001). A significantly inferior preoperative KSS was found in females and type III tendon involvement (p < 0.001). For supraspinatus and infraspinatus, the preoperative KSS of group II fatty infiltration showed a significantly lower score than group I fatty infiltration (p < 0.05). CONCLUSIONS: A relatively lower preoperative KSS was associated with old age, large tear size, narrow AHD, female, type III tendon involvement, and group II fatty infiltration of the supraspinatus and infraspinatus. Our study indicates that preoperative KSS can be a good measurement for the preoperative status of patients with rotator cuff tears.

Preoperative Factors related to Corneal Flap Thickness in LASIK using Microkeratome

PURPOSE: To identify factors that may be related to variations in corneal flap thickness in LASIK using the Moria M2 microkeratome. METHODS: The charts of patients having LASIK based on steep keratometry nomogram using Moria M2 microkeratome (head : 110 micrometer) and excimer laser (VISX STAR S2, USA) in our department of ophthalmology from March, 2003, to May 2005, were reviewed retrospectively. A total of 195 eyes were enrolled in the investigation. We analyzed relationship between corneal flap thickness and preoperative factors including central corneal thickness, steep keratometer, corneal diameter, suction ring using multiple regression analysis. RESULTS: Mean corneal flap thickness was 119.37+/-21.21 micrometer. There was a statistically significant positive correlation between flap thickness and central corneal thickness (p<0.05). No correlation was found between flap thickness and other preoperative factors including steep keratometer, corneal diameter and suction ring. CONCLUSIONS: Mean corneal flap thickness using the Moria M2 110 micrometer head was 119.37+/-21.21 micrometer, little thicker than our expectation. When surgery is performed based on steep keratometry nomogram using Moria M2 microkeratome, if intraoperative factors are excluded, there is a trend toward thicker flap thickness with thicker central corneal thickness, whereas steep keratometer, corneal diameter or suction ring have no influence on flap thickness.

Factors Influencing Final Visual Outcome in Intraocular Foreign Bodies

PURPOSE: To evaluate the relationship between final visual outcomes and other factors such as sex, age, right or left eye, initial vision, initial findings, kinds of IOFB(intraocular foreign body) and size, entry site, and final location of IOFB, preoperative retinal lesion and postoperative retinal detachment. METHODS: We analyzed the records of 36 eyes of 36 patients of perforating ocular injury with IOFB retrospectively from September, 1995 to May, 1999. RESULTS: The preoperative factors which were associated with final visual outcome were vitreous hemorrhage, hyphema, preoperative retinal lesion and postoperative retinal detachment. CONCLUSIONS: The factors influencing final visual outcome in intraocular foreign bodies are hyphema, vitreous hemorrhage, preoperative retinal lesion.

Change of Corneal Thickness after LASIK and Relationship be tween Corneal Thickness and Preoperative Factors

We analysed the relationship between preoperative factors and changes of corneal thickness after LASIK.Between January 1997 and October 1998, 124 eyes underwent LASIK procedure using VISX STAR at Kangnam's St. Mary's hospital.In group 1, 39 eyes had corneal thickness 50 micrometer or more after preoperative corneal thickenss was substracted with postoperative thickness.As control group, 33 eyes had the difference of corneal thickness 0 -5 0 micrometer or less.The each difference was calculated at 1 wk, 1 month, 6 months, 1 year postoperatively.We evaluated the preoperative factors, such as corneal thickness, spherical equivalent, corneal keratometer.The attempted correction for refractive errors was determined by cycloplegic refraction.In group 1, the difference in corneal thickness was 77 +/-2.5 micrometer at 1 week.58 +/-1.4 micrometer at 2 months, 57 +/-1.2 micrometer at 6 months and 58 +/-1.4 micrometer at 1year postoperatively. These results statistically greater than those of control group.And the more spherical equivalent, the thinner corneal thickness, the more difference in corneal thickness was, which was statistically signifi-cant comparing with group 2 (P<0.05).But, preoperative keratometry and the difference in corneal thickness was not significant between two groups (P=0.64).

Factors Influencing Final Visual Acuiry After Penetrating Ocular Infuries

We analyzed the records of 124 eyes of 124 perforating ocular injury patients retrospectively from June 1 1994 to examine the relationship between final visual acuity and preoperative factors such as age, sex, initial visual acuity, location of injury, length of injury, mechanism of injury, intraocular foreign body, traumatic catarcact, secondary operation, hyphema, vitreous hemorrhage. The preoperative factors that influence final visual were age, initial visual acuity, length of infury, vitreous hemorrahage, secondary operation. However, other factors such as gender, mechanism, location of injury, intraocular foreign body, traubatic cataract, and hyphema did not influence final visual acuity. Final visual acuity was better in the case of young patients, good initial visual acuity were age, initial visual acuity, length of injury, vitreous hemorrhage, secondary operation, However, other factors such as gender, mechanism, location of injury, intraocular foreign body, traumatic cataract, and hyphema did not influence final visual acuity. Final visual acuity was better in the case of young patients, good initial visual acuity, short wound length, absence of vitreous hemorrhage and secondary operation.

Preoperative Factors Infulencing the Results of Total Knee Arthroplasty / 대한정형외과학회잡지

The long-term studies of total knee arthroplasty (TKA) have confirmed reliable relief of pain and maintenance of function. However there have been few generalized studies of factors influencing the results of TKA. We evaluated retrospectively 187 TKAs (137 patients) which had been performed between January 1987 and May 1995. The follow-up period was from one year to eight years (mean, 3 years and 8 months). There were 133 knees of osteoarthritis (OA), 43 knees of rheumatoid arthritis (RA) and 11 knees of other causes including septic knee sequelae. We considered the preoperative factors as age, sex, side (right or left), body weight, height, primary disease, flexion contracture (FC), further flexion (FF), range of motion (ROM) of joint, deformity of varus and valgus and pain score, muscle strength score, instability score, total knee score according to the knee rating scale of the Hospital for Special Surgery (HSS). We considered the clinical results as FC, FF, ROM, pain, muscle strength, instability, total knee score according to the knee rating scale of the HSS and the radiological results as Roentgenographic Evaluation and Scoring System of American Knee Society and radiolucent line more than 2mm in width. We evaluated the clinical and radiological results of TKAs followed up more than I year and analyzed the results based on above factors. The results were as follows: 1. The preoperative factors influencing final FC were not the primary disease and FC, but the FF and ROM. The preoperative factors influencing final FF and ROM were the primary disease, the FF and ROM. 2. The pain, muscle power, instability scores were improved but there was no significant factor influencing them. The HSS knee scores were higher in OA group than RA group postoperatively. 3. There was no preoperative factor influencing the complication, revision, the radiological results. The preoperative factors influencing the results of TKA were the FF, ROM and the primary disease.