Surgical Outcomes of Modified Medial Rectus Resections in Recurrent Intermittent Exotropia

PURPOSE: To evaluate the outcomes of modified medial rectus (MR) resection using a lowered amount of MR resection for recurrent exotropia after bilateral lateral rectus (LR) recessions. METHODS: Fifty-six patients, who underwent MR resection from 2003 to 2017 for recurrent exotropia after bilateral LR recessions, were included. MR resection was performed using modified MR resection with a smaller amount of resection than the standard of 4 mm resection at 20 prism diopters (PD) of exotropia. Postoperative surgical results at 1 month, 6 months, 1 year and 2 years were classified as a success (5 PD esotropia [ET]-10 PD exotropia [XT]), overcorrection (>5 PD ET), and undercorrection (>10 PD XT). The clinical factors affecting surgical results at postoperative 6 month and 2 years were also evaluated. RESULTS: The success rate was 78.2% at postoperative 1 month and 87.5% at postoperative 6 months. The overcorrection rate was 21.8% and the undercorrection rate was 0% at postoperative 1 month. At postoperative 6 months, the overcorrection rate decreased to 0% and the undercorrection rate was 12.5%. The success rate was 85.7% at postoperative 1 year and 66.6% at postoperative 2 years. There was no clinical factor affecting the surgical outcomes except the ocular alignment at postoperative 1 month. The deviation at postoperative 1 month was more esotropic in patients with success at postoperative 6 months and 2 years than that in patients with undercorrection (p < 0.05). CONCLUSIONS: The modified MR resection showed favorable results of 87.5% at postoperative 6 months and 85.7% at 1 year. The angle of deviation at postoperative 1 month was an indicator of subsequent surgical outcomes.

Retrospective analysis of 79 patients with orbital floor fracture: outcomes and patient-reported satisfaction

BACKGROUND: The aim of our retrospective study is to evaluate the management of isolated orbital floor fractures considering the clinical, functional and aesthetic results according to the surgical approach and the type of materials used. METHODS: Retrospectively, clinical, radiological, surgical, and ophthalmological data from 79 patients were collected from January 2010 to December 2016. Furthermore, included patients were interrogated on functional and aesthetic satisfaction. RESULTS: The main causes of trauma were physical aggression followed by accidents. The median time between trauma and surgery was 4 days. The most common surgical approaches were the subciliary and the transconjunctival ones. Alloplastic materials were used in 75 patients. In two patients, we used a combination of two grafts. Patients experienced minor immediate complications. On follow-ups, none of our patients suffered from ocular movement restrictions. Patients treated by subciliary approach had higher risk of retractile scaring compared to other surgical approaches. In our study, patients agreed to complete a questionnaire assessing functional and aesthetic outcomes with a high satisfaction score. No association between the implant material used and the results has been assessed. CONCLUSION: This study describes the results of orbital floor reconstructions. Despite a variety of materials used and surgical approaches performed, we believe that the transconjunctival approach is the most suitable option with a high satisfaction score.

Reparación artroscópica con banda simple en pacientes con lesión aislada de ligamento cruzado posterior. Serie de Casos / Single-row arthroscopic repair in patients with isolated posterior cruciate ligament injury. Case Series

Introducción La lesión aislada del ligamento cruzado posterior ocasiona inestabilidad y falla del componente rotatorio de la rodilla. El objetivo del trabajo es describir los resultados del tratamiento artroscópico con banda simple operados por técnica de un solo haz con monotúnel y fijación con tornillos interferenciales en pacientes con lesiones aisladas del Ligamento Cruzado Posterior grado III. Materiales & métodos Estudio transversal. Se utilizó el formulario IKDC para evaluar tratamiento de lesiones del Ligamento Cruzado Posterior preoperatoriamente y al año. La estadística empleada fue descriptiva, se utilizaron medidas de tendencia central y dispersión, U de Mann Whitnney-Wilcoxon para comparar medias. Resultados Fueron 5 pacientes, 4(80%) fueron masculinos y 1(20%) femenino, la edad promedio 27.8 años (mínima 20, máxima 33) ± 5.58 años, el lado afectado fue derecho en 3(60%), izquierdo en 2(40%) pacientes, todos presentaron signo de cajón posterior positivo. Los resultados del formulario IKDC prequirúrgico y al año fueron: diferencia de promedios 2.6, suma de rangos negativos 15, suma de rangos positivos 0, z= -2.070, p=0.038, al año ningún paciente presentó signo de cajón posterior positivo. Discusión El tratamiento de lesiones aisladas del LCP grado III con técnica de un solo haz y monotúnel con autoinjerto de isquiotibiales por vía artroscópica ofrece resultados buenos.

Background Isolated lesions of the posterior cruciate ligament cause instability and failure in the rotating component of the knee. The objective of this article is to describe the results of single-row arthroscopic treatment using a single-bundle technique with a single tunnel and fixation with interference screws in patients with isolated lesions of the Posterior Cruciate Ligament, grade III. Methods A cross-sectional study was conducted using the IKDC Test to evaluate, pre-operatively and yearly, the treatment of posterior cruciate ligament injuries. The statistics used were descriptive, as well as measures of central tendency and dispersion, and Mann Whitney U- Wilcoxon tests to compare means. Results The study included 5 patients, 4 (80%) were male and 1 (20%) female, and a mean age 27.8 years (minimum 20, maximum 33) ± 5.58 years). The affected side was right in 3%, left in 2 (40%) patients, and all showed a posterior drawer sign. The results of the pre-operative IKDC test were: difference of means 2.6, sum of negative ranks 15, sum of positive ranks 0, z = -2.070, P=.038; after surgery no patient had a positive posterior drawer sign. Discussion The treatment of isolated grade III lesions of PCL with a single bundle and tunnel technique with an arthroscopic autograft of hamstrings offers good results.

The impacts of the left ventricular size for infants with total anomalous pulmonary venous connection on the early results of anatomical correction / 中华胸心血管外科杂志

Objective To investigate the impacts of the left ventricular size for infants with total anomalous pulmonary venous connection(TAPVC) on the early results of anatomical correction.Methods From Jan 2010 to Jun 2013,103 cases of TAPVC children under 1 year of age received biventricular correction in our hospital,including 65 males and 38 females with the mean body weight of(5.3 ± 1.3) kg.Taking left ventricular end-diastolic volume index(LVEDVI) of 20 ml/m2 as a boundary,all the children were divided into two groups:Small LV group and the Near normal LVgroup.Various factors including age,body weight,pathological type,pulmonary venous obstruction and restricted atrial septal defect were compared between the two groups.The Z value were introduced to demonstrate the small extent of the left atrium and left ventricle of TAPVC patients in comparison with the normal children.TAPVC correction surgery were performed with conventional median sternotomy,moderate hypothermic cardiopulmonary bypass and combined malformations were treated simultaneously.Results 45 patients were classified to Small LV group and 58 patients were classified toNear normal LV group.71.1％ of all Small LV patients was diagnosed as the obstruction type of TAPVC,the ratio was significantly higher than that of theNear normal LV group.The Z value of left ventricular end-diastolic diameter in theSmall LV group was significantly lower than that of the Near normal LV group.The mean CPB and aortic clamping time of all patients were (96.6 ± 34.4) min and (58.0 ±21.1) min respectively.There were 4 early postoperative death and the overall mortality was 3.9％.No patient was dead of low cardiac output.The duration of postoperative mechanical ventilation,ICU stay and vasoactive drugs application in Small LV group was significantly longer than that of Near normal LV group.Conclusion TheSmall LV,which should be viewed as relative dysplasia of left ventricle ,is more common in obstructive type of TAPVC.As long as the sizes of mitral valve and aortic valve were not significantly reduced,anatomic correction can be implemented and need not to concern the reducing degree of left ventricle.Nevertheless,the prevention and treatment of low cardiac output in the operation and early postoperative period were still key points for small LV patients to achieve good surgical results.

Malformaciones arteriovenosas. Revisión y análisis estadístico de 52 MAVs tratadas durante el período de 2000-2010. Tercera parte / Arteriovenous malformations. Review and statistical analysis of 52 MAVs treated during the period 2000-2010. Third part

INTRODUCCIÓN: describir nuestra experiencia en el tratamiento de las MAVs analizando: procedimientos endovasculares utilizados, resultados postoperatorios y complicaciones asociadas, estadificación según escalas de Barthel y Rankin modificadas. MATERIAL Y MÉTODOS: la población de estudio se constituyó por 52 pacientes con MAVs la cual fue analizada y estudiada mediante examen neurológico pre y postoperatorio, TC cerebral, RM cerebral y arteriografía de 4 vasos de cuello, la totalidad fue tratada mediante cirugía convencional en nuestro Servicio durante el período comprendido entre los años 2000 a 2010. RESULTADOS: recibieron tratamiento endovascular previo a la cirugía 16 MAVs (30,76 %). Todas fueron operadas. Doce pacientes mejoraron en el postoperatorio (23,07 %), 30 pacientes (57,69%) no sufrieron modificaciones y 10 de ellos (19,23%) empeoraron durante el postoperatorio. La mortalidad fue de 7 casos (13,46 %). CONCLUSIÓN: consideramos a los procedimientos endovasculares y la radiocirugía una herramienta de indudable valor terapéutico. Creemos que el subgrupo de MAVs grados III, IV y V representa una entidad singular que las distingue del resto, como una subtipo que requiere más aun de una compleja toma de decisiones. Tuvimos las mayores complicaciones postoperatorias en MAVs grados III y IV. Nuestra mortalidad postoperatoria coincide con la bibliografía consultada

INTRODUCTION: to describe our experience in treating AVMs based on the endovascular procedures used, postoperative results and associated complications, staging according to Barthel Index and modified Rankin Scale. PATIENTS AND METHOD: we present 52 patients with AVMs which were analysed and studied by Pre and Post-Surgery Neurological exam, brain CT, Brain IRM and four Neck vessels arteriography. All the patients were treated by conventional Surgery at our Department of Neurosurgery for the 2000­2010 period. RESULTS: Sixteen patients with AVMs (30.76%) underwent endovascular treatment prior to surgery. 100% were operated. 12 patients (23.07%) improved their clinical condition in the postoperative period, 30 patients (57.69%) showed no changes, and 10 of them (19.23%) experienced deterioration during the postoperative period. There were 7 mortal cases (13.46%). CONCLUSION: we believe that endovascular procedures and radiosurgery are tools of immense therapeutic value. We also consider that the subgroup of AVMs grade III, IV and V have unique features that distinguish them among the rest as a subtype, thus requiring extreme care when making decisions. Most postoperative complications occurred with AVMs grade III and IV. The mortal cases in the postoperative period coincided with those mentioned in the bibliography consulted

Results of Open Surgical Repair of Chronic Juxtarenal Aortic Occlusion

PURPOSE: The aim of study was to review the results of open surgical repair (OSR) of chronic juxtarenal aortic occlusion (JRAO). MATERIALS AND METHODS: We retrospectively reviewed the results of OSR performed in 47 patients (male, 92%; mean age, 59.9+/-9.3 years [range, 44-79]) with chronic JRAO during the past 21 years. In order to reduce intraoperative renal ischemic time (RIT), we excised a portion of the occluded segment of the infrarenal aorta without proximal aortic clamping. We then performed suprarenal aortic clamping with both renal arteries clamped, removed the proximal aortic thrombus cap, confirmed both renal artery orifices, and moved the suprarenal aortic clamp to the infrarenal aorta to allow renal perfusion and standard aortoiliac reconstruction. We investigated early (<30 days) postoperative surgical morbidity (particularly renal function), operative mortality, and longterm patient survival. We conducted risk factor analysis for postoperative renal insufficiency. RESULTS: The mean intraoperative RIT was 10.7+/-5.5 minutes (range, 3-25), including 6 patients who underwent concomitant pararenal aortic thromboendarterectomy. Postoperatively, five (11%) patients had transient renal insufficiency, one had pneumonia, and one patient had an acute myocardial infarction. However, there was no operative mortality or newly developed dialysis-dependent renal failure. Postoperative follow up was available in 36 (77%) patients for a mean period of 6.3 years (range, 1 month-17 years). Kaplan Meier calculations of patient survival at 5 and 10 years after surgery were 91.2% and 83.6%, respectively. CONCLUSION: We have experienced short RIT, acceptable early postoperative results and long-term survival after OSR of chronic JRAO.

Thirteen-year Experience of 44 Patients with Adult Hemorrhagic Moyamoya Disease from a Single Institution: Clinical Analysis by Management Modality

Our objective was a retrospective assessment of the management modalities that provided the most beneficial treatment in hemorrhagic moyamoya disease during the last 13 years at our institution. The clinical results of 44 patients with hemorrhagic moyamoya disease were investigated, comparing revascularization surgery (direct, indirect, and combined bypass) or conservative treatment. Angiographic features, rebleeding, and clinical outcome were investigated. Six of the 35 patients (17.1%) with revascularization surgery experienced rebleeding, as did 4 of 9 patients (44.4%) with conservative treatment. However, patients who underwent bypass surgery had a lower chance of rebleeding. No significant difference in chance of rebleeding was observed between bypass surgery and non surgery groups (p > 0.05). Cerebral angiography performed after bypass surgery showed that for achieving good postoperative revascularization, direct and combined bypass methods were much more effective (p < 0.05). While the risk of rebleeding in the revascularization group was generally lower than in the conservative treatment group, there was no statistically significant difference between treatment modalities and conservative treatment. Although statistical significance was not attained, direct and combined bypass may reduce the risk of hemorrhage more effectively than indirect bypass.

Thirteen-year Experience of 44 Patients with Adult Hemorrhagic Moyamoya Disease from a Single Institution: Clinical Analysis by Management Modality

Our objective was a retrospective assessment of the management modalities that provided the most beneficial treatment in hemorrhagic moyamoya disease during the last 13 years at our institution. The clinical results of 44 patients with hemorrhagic moyamoya disease were investigated, comparing revascularization surgery (direct, indirect, and combined bypass) or conservative treatment. Angiographic features, rebleeding, and clinical outcome were investigated. Six of the 35 patients (17.1%) with revascularization surgery experienced rebleeding, as did 4 of 9 patients (44.4%) with conservative treatment. However, patients who underwent bypass surgery had a lower chance of rebleeding. No significant difference in chance of rebleeding was observed between bypass surgery and non surgery groups (p > 0.05). Cerebral angiography performed after bypass surgery showed that for achieving good postoperative revascularization, direct and combined bypass methods were much more effective (p < 0.05). While the risk of rebleeding in the revascularization group was generally lower than in the conservative treatment group, there was no statistically significant difference between treatment modalities and conservative treatment. Although statistical significance was not attained, direct and combined bypass may reduce the risk of hemorrhage more effectively than indirect bypass.

Coccygodynia and Coccygectomy

OBJECTIVE: A review of the literature on coccygectomy and our patients was performed to assess the effectiveness of coccygectomy for chronic refractory coccygodynia. METHODS: An English language PubMed search was conducted with the terms "coccygodynia" and "coccygectomy" from January 1980 to January 2012. We retrospectively reviewed the medical records and performed telephone questionnaire on 61 patients who underwent coccygectomy at UCDMC between 1997 and 2009. RESULTS: There were 28 case series from 1980 to 2012 for a total of 742 patients who underwent coccygectomy following failed conservative management. The mean age ranged from 26.4 to 52.8 years. The most common cause was direct trauma (58.5%) with a male:female ratio of 1:5.2. Most patients (84%) had a good to excellent outcome after coccygectomy. The most common complication is wound infection (10.0%). The overall complication rate was 13.3%. Similarly, 84.6% of patients from our own surgical case series reported good to excellent outcomes with 11.5% wound infection. CONCLUSION: Coccygectomy is an effective treatment for chronic refractory coccygodynia. The surgery isrelatively simple to perform but precaution must be taken to avoid wound infection.

The Comparison of Surgical Results Between Non-accommodative and Partially Accommodative Esotropia

PURPOSE: To examine the differences in surgical results between non-accommodative esotropia (NAE) and partially accommodative esotropia (PAE). METHODS: This retrospective study included 47 patients undergoing surgery for pediatric esotropia, defined as esotropia with a decrease in the deviated angle of greater than ten prism diopters (PD) upon administration of hyperopic spectacles. On the other hand, NAE was defined as esotropia with a decrease in the deviated angle of less than 10PD. We compared age at surgery, deviated angle at surgery, frequency of amblyopia, and deviated angle at each postoperative period in two groups. RESULTS: Twenty-nine patients belonged to the PAE group, and 18 patients belonged to the NAE group. The age at surgery in the PAE group was higher than that of the NAE group, and the deviated angle for surgical correction was smaller in the PAE group than in the NAE group. No statistically significant difference in the frequency of amblyopia presentation was found between the two groups. The surgical success rates were much higher in the PAE group at postoperative two years and at the final visit compared to those of the NAE group. CONCLUSIONS: In esotropic children who underwent surgery, the long-term surgical success rate was highest in the cases in which the esotropic angle was decreased by hyperopic correction.

Relationship between pathology of concomitant exotropia medial rectus and surgical results / 国际眼科杂志(Guoji Yanke Zazhi)

AIM: To evaluate the relationship between the medial rectus cells counts in concomitant exotropia and surgical results. METHODS: A total of 32 pieces of medial rectus muscle were collected for HE staining in this study, of which 18 pieces were from patients with concomitant exotropia and 14 pieces were from healthy individuals. A method of strabismus score was used to assess the operative effect.RESULTS: The difference of strabismus score before and after the operation in the intermittent exotropia group was significantly higher than that in constant exotropic group (P<0.01). Under light microscope, the loosen muscle fibers and the increased stromal components in the cross sectional area of medial rectus were observed in strabismic group. The muscle cells counts was obviously lower in strabismic group than in control group (P<0.01), which was related to the difference of strabismus score before and after the operation (P<0.05).CONCLUSION: The decreased medial rectus cells counts induce concomitant exotropia directly. It is the crucial causes of the bad surgical results.

Falx Meningiomas: Surgical Results and Lessons Learned from 68 Cases

OBJECTIVE: The purpose of this study was to review the characteristics of falcine meningioma retrospectively and to identify the parameters associated with tumor recurrence. METHODS: The analysis included; age, sex, extent of resection, and radiologic and pathologic findings. Falcine meningiomas were classified by location as anterior, middle, or posterior as described for parasagittal meningiomas. RESULTS: Of the 795 meningioma patients treated between 1990 and 2004 at the authors' institution, 68 patients with meningiomas arising from the falx underwent craniotomies. There were 22 male and 46 female patients (1 : 2.1). Mean age was 55 years and ranged from 14 to 77 years. Locations of falcine meningioma were; the anterior third in 33 cases, middle in 20, and posterior in 15. Mean tumor volume was 42 cc and ranged from 4 to 140 cc. In 58 of the 68 patients tumors were totally removed. Additional surgery for recurrence was performed in 6 patients over 15 years. Of these 6 patients, only two patients underwent gross total tumor resection at first operation; the other four underwent subtotal tumor resection. Based on pathologic reports, the largest tumor subtype was transitional. There were four patients with a high grade tumor-three atypical and one anaplastic meningioma. Of the 68 patients, 59 achieved a good outcome (no neurological deficit or recurrence), six had temporary complications, two suffered new permanent postoperative deficits, and the remaining one died due to severe brain swelling despite postoperative intensive care. Extent of surgical resection was found to be significantly related to tumor recurrence. CONCLUSION: Falcine meningioma accounted for 8.5% of intracranial meningiomas and the transitional meningioma was the most common subtype of falcine meningioma. Gross total resection of tumor was the single most important predictor of an improved surgical outcome.

Surgical Outcomes of Intermittent Exotropia as a Function of Strabismic Angle

PURPOSE: To analyze postoperative results of intermittent exotropia as a function of the difference in strabismic angles measured immediately and another time prior to the surgery. METHODS: We reviewed the clinical records of intermittent exotropia patients who received surgery and had differences greater than or equal to 10 prism diopters (PD) between the last preoperative measurement of strabismic angle and another previous measurement. After applying various exclusion criteria, 66 patients were entered into our study. At the last follow-up visit after surgery, we divided postoperative results into 3 categories: (1) poor; with greater than 10 PD of esotropia or angle of exodeviation of 20 PD or more (2) moderate; with 6-10 PD of esophoria/tropia or 10-19 PD exodeviation, or (3) good; with 1-5 PD of esophoria/tropia or an angle of exodeviation less than 10 PD, or orthophoria. RESULTS: Good results were higher in patients where the difference in strabismic angle was 10 PD or greater between the last measurement and any other earlier measurement. CONCLUSIONS: In cases of Intermittent exotropia where the last preoperative value of strabismic angle was greater than any previous preoperative measurement, surgical dosage based on the last preoperative measurement yielded better results.

Surgical Results of Unruptured Intracranial Aneurysms

OBJECTIVE: To document surgical mortality and morbidity for the treatment of unruptured intracranial aneurysms, and to identify optimal treatment modalities, the authors reviewed and analyzed the surgical results. METHODS: The authors reviewed 49 cases of unruptured intracranial aneurysm without a previous history of subarachnoid hemorrhage from March 1984 through December 2003. Unruptured intracranial aneurysms were categorized as asymptomatic and symptomatic, and operative results were assessed using the Karnofsky scale at 3 months postoperatively. Outcomes were defined as 'excellent' for a Karnofsky scale score of 100, 'good' for a score of 80~90, 'fair' for 50~70, 'poor' for 10~40, or as 'death'. Excellent and good results were defined as a 'favorable' outcome and others as 'unfavorable' outcome. RESULTS: Of the 49 study subjects, 45 had a favorable outcome and 4 an unfavorable outcome. Surgical mortality was 6.1% and surgical morbidity was 2.0% for all subjects. And the symptomatic group had more complications. CONCLUSION: There were no significant relationships between aneurysmal size, location, and preoperative symptoms with surgical results. And we believe that the reasons for morbidity and mortality are attributable to strokes, thus more attention should be paid to peri- and post-operative patients care with a focus on strokes prevention in the symptomatic group.

Os Submedialis Malleolare (OSM): the clinical characteristics and surgical results / 대한정형외과학회잡지

PURPOSE: The objective of this study was to define the Os Submedialis Malleolare (OSM) as an any ossicles below medial malleolus of tibia and to determine the characteristics of clinical and radiological characteristics and to evaluate results of surgical treatment of OSM. MATERIALS AND METHODS: Twenty-six patients with OSM were identified between November 1, 1998 and June 30, 2002. RESULTS: The mean age was 18.3 years. All patient except one were male and soccer players comprised 71% (20 cases). Associated disease were 8 cases (29%) of chronic ankle instabilities, one case (4%) of anterior impingement syndrome and one (4%) of plantar fascitis. The most common clinical symptom was pain during walking and sports activity and sign was tenderness around medial malleolus. Only simple radiograph could reveal presence of ossicle and differentiate with acute fracture. If symptom and sign obscured , Bone scan (7 cases) and MRI (3 cases) identify causes of pain and tenderness. As a surgical treatment, all bony fragment caused symptom and sign were eliminated and medial collateral ligament was reattached meticulously. Associated chronic ankle instability were present, modified Brostrom procedure was done simultaneously. On follow-up, The symptomatic pain were wholly disappeared at average 2.2 months (1-6 months) after operation. On one year follow-up, all patients have been daily life without any complaints and all soccer players go back to the game within three months. CONCLUSION: Os Submedialis Malleolare have relatively rare incidence and most common clinical symptom and sign is tenderness on medial malleolar area of ankle, can be diagnosed both physical examination and plain X-ray film. As a treatment, Removal of ossicle and meticulous repair or reattachment of deltoid ligament could obtain excellent or good results.

Surgical Experiences of 2,178 Cases of Intracranial Aneurysms

OBJECTIVE: The present study is conducted to evaluate the overally surgical results in 2,178 patients with intracranial aneurysms operated in our institution from January 1980 to December 30th, 2000. METHODS: The anterior communicating artery aneurysms was 720 case, internal carotid artery aneurysms 576, middle cerebral artery aneurysms 588, anterior cerebral artery aneurysms 57 and vertebro-basilar artery aneuryms was 78 case. The male to female ratio was 0.7 to 1. Surgical methods were 1,968 clippings, 170 coatings and wrappings, 22 aneurysmorraphy, 18 proximal ligations. RESULTS: Incidence of the rebleeding was 5.6% of the early operation group, 17% of the late operation group. Incidence of the clinical vasospasm was 18.6%, angiographic vasospasm was 26.2%. The multiple aneurysms was 8.6%, dissecting aneurysm 4 cases(0.2%), "De Novo" aneurysm 4 cases(0.19%), lobectomy cases 7 cases(0.32%), and incidental aneurysms 108 cases(5.01%) respectively. Overall surgical result was favorble outcome in 86% and mortality in 7%. In early surgery group, favorable outcome was 88%, mortality was 6%. The calcium-channel blocker and "Triple-H" therapy improved the post-operative morbidity significantly. In old age group, favorable outcome was 85.5% and 8.5% mortality rate in early operation group, favorable outcome 69.8%, mortality 11.3% in late operation group. Intraoperative angiography reduced residual aneurysm or remained aneurysm in large, giant aneurysm, and complicated aneurysm especially in anterior communication artery aneurysm. CONCLUSION: It is important to know our own statisticts about the cerebrovascular disease in Korea. We present the large series of aneurysm surgery in one institute.

Surgical Experiences of 2,178 Cases of Intracranial Aneurysms

OBJECTIVE: The present study is conducted to evaluate the overally surgical results in 2,178 patients with intracranial aneurysms operated in our institution from January 1980 to December 30th, 2000. METHODS: The anterior communicating artery aneurysms was 720 case, internal carotid artery aneurysms 576, middle cerebral artery aneurysms 588, anterior cerebral artery aneurysms 57 and vertebro-basilar artery aneuryms was 78 case. The male to female ratio was 0.7 to 1. Surgical methods were 1,968 clippings, 170 coatings and wrappings, 22 aneurysmorraphy, 18 proximal ligations. RESULTS: Incidence of the rebleeding was 5.6% of the early operation group, 17% of the late operation group. Incidence of the clinical vasospasm was 18.6%, angiographic vasospasm was 26.2%. The multiple aneurysms was 8.6%, dissecting aneurysm 4 cases(0.2%), "De Novo" aneurysm 4 cases(0.19%), lobectomy cases 7 cases(0.32%), and incidental aneurysms 108 cases(5.01%) respectively. Overall surgical result was favorble outcome in 86% and mortality in 7%. In early surgery group, favorable outcome was 88%, mortality was 6%. The calcium-channel blocker and "Triple-H" therapy improved the post-operative morbidity significantly. In old age group, favorable outcome was 85.5% and 8.5% mortality rate in early operation group, favorable outcome 69.8%, mortality 11.3% in late operation group. Intraoperative angiography reduced residual aneurysm or remained aneurysm in large, giant aneurysm, and complicated aneurysm especially in anterior communication artery aneurysm. CONCLUSION: It is important to know our own statisticts about the cerebrovascular disease in Korea. We present the large series of aneurysm surgery in one institute.

Surgical Results of MRSA(Methicillin-resistant S. aureus)-Isolated Chronic Otitis Media / 대한이비인후과학회지

OBJECTIVE: Although MRSA has been considered as a nosocomial pathogen, it is the most prevalent causative agent in COM (chronic otitis media) patients recently, even community-acquired cases in Korea. To evaluate the effect of MRSA infection on the surgical outcome of COM, we compared the surgical outcome of MRSA-isolated patients with those of patients infected by other bacterial agents. Subjects and Methods: Two hundred and ninty-eight COM patients operated by same surgeon from January 1997 to December 1998 were reviewed for the bacterial cultures and their operation procedures. Among them, we analyzed the patients operated by using canal wall-up (CWU) procedures retrospectively, including 78 patients of MRSA group and 132 patients with other bacterial agents, to study the incidence of post-operative otorrhea and re-perforation, the duration of dressing period, and the degree of hearing improvement according to tympanoplasty types. The mean follow-up period was 9.1 months (5-26 months). RESULTS: MRSA was most frequently isolated, in 88 (29%) of 298 patients, followed by MSSA (Methicillin-sensitive S. aureus) in 42 (14%), Pseudomonas sp. 31 (10%). Post-operative otorrhea and re-perforation were significantly more frequent in MRSA-group as 9 (11.5%) vs. 10 (7.6%) and 4 (5.1%) vs. 2 (1.5%). There was no significant difference of the duration of post-operative dressing and the degree of hearing improvement. CONCLUSION: The MRSA-group showed higher incidence of post-operative otorrhea and re-perforation compared to the control-group, even though there was no difference in the results of hearing improvement and the duration of dressing period.

Microvascular Decompression for Hemifacial Spasm

The authors analysed the results of 300 microvascular decompression(MVD) procedures for hemifacial spasm. The follow up period ranged from 6months to 3years. Of these, 70% were women(mean age 54). The vessel most frequently found to compress the facial nerve was the posterior inferior cerebellar artery(43.3%) followed by anterior inferior cerebellar artery(26.7%). For the surgical results, 210 patients(70%) had complete relief of spasm within 3 days after MVD, 65 patients(21.7%) subsequently experienced complete relief, noted in 4 days to 6 months after MVD, ten patients had delayed partial relief and remaining 15 patients showed no improvement. Twelve patients of these 15 unresponsive patients underwent reoperation without beneficial results. Recently the authors have monitored facial elctromyography(EMG) intraoperatively to observe the abnormal late response. There were few cases of permanant major complications, including two cases of ipsilateral hearing loss, ataxia and no operation-related death. These results suggest that MVD is a safe and definite treatment for hemifacial spasm, if performed by experienced surgeon with gentle operative technique, and with intraoperative monitoring such as auditory evoked potential and facial EMG, better surgical results with less complications can be expected.

A Study of Factors Related to Surgical Success Rate of Dacryocystorhinostomy

To evaluate factors related to success rate of dacryocystorhinostomy, we retrospectively surveyed 131 eyes about age, sex, symptom duration, etiology, obstruction site, sac size, silicone tube insertion and surgeons learning curve. Patients age, sex, obstruction site and sac size were not related to surgical results, but longer duration of epiphora, trauma, silicone intubation and poor surgical skill had relationship with poor surgical results. Surgical skill was the most important factor in multiple logistic regression. We believe that surgical technique for making a mucosal flap with bone removal etc., was very important to surgical success.