Chemical neurolysis can be an extremely effective intervention for reducing spasticity. Phenol nerve block as a method of chemical neurolysis has been used over 40 years, nevertheless, many clinicians remain reluctant to perform this procedure. This is largely due to the fear of its side effects and complications such as excessive muscle weakness or increased spasticity of antagonistic muscles. The purpose of this study was to titrate the nerve block effects of phenol with different concentrations and different volumes of the phenol solution. Left tibial nerves of forty eight adult rabbits were injected with phenol solution of different concentrations(5%, 4%, 3%) and volumes(0.3 ml, 0.2 ml, 0.1 ml) into the epineural sheath. Nerve conduction study of the gastrocnemius muscle was performed before and after the nerve blocks(1day, 1week, 2weeks, 4weeks, 8weeks). The proportion of compound muscle action potential(CMAP) amplitudes and areas before and after the nerve blocks was used for the evaluation of nerve block effect. There was a statistically significant difference in the proportion among three volumes of phenol solution(p<0.05). However there was no statistical difference in the proportion among three concentrations of phenol solution(p>0.05) although the higher concentration of phenol solution showed the tendency for smaller proportion. The area of histological degeneration appeared at 2 weeks following nerve block alongside the perineurium. The depth of degeneration area of nerve fascicle varied according to the distance from injection point. These data suggest that the nerve block effect of phenol can be titrated more easily with the volume of phenol solution rather than the concentration until 8 weeks after the nerve block. The variation of the extent of degeneration with different volumes of phenol solution seems to be the mechanism for the titration.
Adult ; Humans ; Muscle Spasticity ; Muscle Weakness ; Muscle, Skeletal ; Muscles ; Nerve Block* ; Neural Conduction ; Peripheral Nerves* ; Phenol* ; Rabbits ; Tibial Nerve

Objectives: . Nasal valve surgery for internal nasal valve (INV) compromise has become increasingly popular. However, this rise in popularity has sparked debates regarding its indications and disputes over insurance coverage, primarily due to the lack of a gold-standard evaluation method. Therefore, we aimed to identify objective parameters for the INV compromise. Methods: . We analyzed 186 INVs in 93 patients who underwent nasal valve surgery. The data comprised facial computed tomography (CT) images, acoustic rhinometry, the modified Cottle test, and symptom scores. Patients were categorized based on their symptoms and the results of the modified Cottle test. We measured the INV angle, area, volume, lateral wall thickness, septal angle, and nasal bone area using CT. Results: . The compromised INV group, characterized by nasal obstruction with a positive modified Cottle test, exhibited smaller INV areas in both coronal and axial views, reduced INV volume in the axial view, and a thinner lateral wall in the coronal view (all P<0.05). Acoustic rhinometry indicated a smaller minimal cross-sectional area and volume in the compromised INV group (both P<0.001). Regression analysis demonstrated significant associations between a compromised INV and reduced INV area on the axial view, as well as the minimal cross-sectional area measured by acoustic rhinometry. Conclusion . Relying solely on the INV angle in CT scans has limitations in assessing compromised INV. Alternatively, the INV area on axial CT scans and the minimal cross-sectional area measured by acoustic rhinometry may serve as objective parameters for evaluating INV compromise.

Objectives: . Nasal valve surgery for internal nasal valve (INV) compromise has become increasingly popular. However, this rise in popularity has sparked debates regarding its indications and disputes over insurance coverage, primarily due to the lack of a gold-standard evaluation method. Therefore, we aimed to identify objective parameters for the INV compromise. Methods: . We analyzed 186 INVs in 93 patients who underwent nasal valve surgery. The data comprised facial computed tomography (CT) images, acoustic rhinometry, the modified Cottle test, and symptom scores. Patients were categorized based on their symptoms and the results of the modified Cottle test. We measured the INV angle, area, volume, lateral wall thickness, septal angle, and nasal bone area using CT. Results: . The compromised INV group, characterized by nasal obstruction with a positive modified Cottle test, exhibited smaller INV areas in both coronal and axial views, reduced INV volume in the axial view, and a thinner lateral wall in the coronal view (all P<0.05). Acoustic rhinometry indicated a smaller minimal cross-sectional area and volume in the compromised INV group (both P<0.001). Regression analysis demonstrated significant associations between a compromised INV and reduced INV area on the axial view, as well as the minimal cross-sectional area measured by acoustic rhinometry. Conclusion . Relying solely on the INV angle in CT scans has limitations in assessing compromised INV. Alternatively, the INV area on axial CT scans and the minimal cross-sectional area measured by acoustic rhinometry may serve as objective parameters for evaluating INV compromise.

Objectives: . Nasal valve surgery for internal nasal valve (INV) compromise has become increasingly popular. However, this rise in popularity has sparked debates regarding its indications and disputes over insurance coverage, primarily due to the lack of a gold-standard evaluation method. Therefore, we aimed to identify objective parameters for the INV compromise. Methods: . We analyzed 186 INVs in 93 patients who underwent nasal valve surgery. The data comprised facial computed tomography (CT) images, acoustic rhinometry, the modified Cottle test, and symptom scores. Patients were categorized based on their symptoms and the results of the modified Cottle test. We measured the INV angle, area, volume, lateral wall thickness, septal angle, and nasal bone area using CT. Results: . The compromised INV group, characterized by nasal obstruction with a positive modified Cottle test, exhibited smaller INV areas in both coronal and axial views, reduced INV volume in the axial view, and a thinner lateral wall in the coronal view (all P<0.05). Acoustic rhinometry indicated a smaller minimal cross-sectional area and volume in the compromised INV group (both P<0.001). Regression analysis demonstrated significant associations between a compromised INV and reduced INV area on the axial view, as well as the minimal cross-sectional area measured by acoustic rhinometry. Conclusion . Relying solely on the INV angle in CT scans has limitations in assessing compromised INV. Alternatively, the INV area on axial CT scans and the minimal cross-sectional area measured by acoustic rhinometry may serve as objective parameters for evaluating INV compromise.

Objectives: . Nasal valve surgery for internal nasal valve (INV) compromise has become increasingly popular. However, this rise in popularity has sparked debates regarding its indications and disputes over insurance coverage, primarily due to the lack of a gold-standard evaluation method. Therefore, we aimed to identify objective parameters for the INV compromise. Methods: . We analyzed 186 INVs in 93 patients who underwent nasal valve surgery. The data comprised facial computed tomography (CT) images, acoustic rhinometry, the modified Cottle test, and symptom scores. Patients were categorized based on their symptoms and the results of the modified Cottle test. We measured the INV angle, area, volume, lateral wall thickness, septal angle, and nasal bone area using CT. Results: . The compromised INV group, characterized by nasal obstruction with a positive modified Cottle test, exhibited smaller INV areas in both coronal and axial views, reduced INV volume in the axial view, and a thinner lateral wall in the coronal view (all P<0.05). Acoustic rhinometry indicated a smaller minimal cross-sectional area and volume in the compromised INV group (both P<0.001). Regression analysis demonstrated significant associations between a compromised INV and reduced INV area on the axial view, as well as the minimal cross-sectional area measured by acoustic rhinometry. Conclusion . Relying solely on the INV angle in CT scans has limitations in assessing compromised INV. Alternatively, the INV area on axial CT scans and the minimal cross-sectional area measured by acoustic rhinometry may serve as objective parameters for evaluating INV compromise.

BACKGROUND: Dermatophytoses tend to have a poorer outcome in diabetic patients than in non-diabetic patients. Therefore, diabetic patients need to pay a closer attention to the prevention and treatment of dermatophytoses. The aim of this study was to determine the level of understanding of the dermatophytoses in diabetic patients and to clarify the factors associated with the level of understanding. METHODS: A questionnaire survey was carried out from June to July, 2005, targeting 200 patients who had visited two hospitals in Seoul for the management of diabetes. There were 163 respondents (response rate 50.9%). The degree of understanding was calculated by giving 1 point to each question, with a maximum of 12 points. RESULTS: The average degree of understanding of dermatophytoses was 6.68 points (SD 1.79). Younger age (P= 0.0002), high education level (P=0.0035), and high income (P=0.0013) were the factors related to a better understanding of dermatophytoses. The patients who had obtained the information on dermatophytoses from the websites, broadcasts, newspapers, or magazines showed higher recognition points than others (P=0.0377). The body mass index, the duration of diabetes, the complications associated with diabetes did not affect the understanding of dermatophytoses. CONCLUSION: There are many diabetes patients who do not know enough about dermatophytoses. Diabetes itself is not related to the level of understanding of dermatophytoses. However, diabetic patients who are older, have a lower level of education, and a low income will need to be informed about prevention and treatment of dermatophytoses.
Body Mass Index ; Surveys and Questionnaires ; Diabetes Mellitus ; Education ; Humans ; Periodicals ; Periodicals as Topic ; Primary Prevention ; Seoul ; Tinea*

BACKGROUND: Dermatophytoses tend to have a poorer outcome in diabetic patients than in non-diabetic patients. Therefore, diabetic patients need to pay a closer attention to the prevention and treatment of dermatophytoses. The aim of this study was to determine the level of understanding of the dermatophytoses in diabetic patients and to clarify the factors associated with the level of understanding. METHODS: A questionnaire survey was carried out from June to July, 2005, targeting 200 patients who had visited two hospitals in Seoul for the management of diabetes. There were 163 respondents (response rate 50.9%). The degree of understanding was calculated by giving 1 point to each question, with a maximum of 12 points. RESULTS: The average degree of understanding of dermatophytoses was 6.68 points (SD 1.79). Younger age (P= 0.0002), high education level (P=0.0035), and high income (P=0.0013) were the factors related to a better understanding of dermatophytoses. The patients who had obtained the information on dermatophytoses from the websites, broadcasts, newspapers, or magazines showed higher recognition points than others (P=0.0377). The body mass index, the duration of diabetes, the complications associated with diabetes did not affect the understanding of dermatophytoses. CONCLUSION: There are many diabetes patients who do not know enough about dermatophytoses. Diabetes itself is not related to the level of understanding of dermatophytoses. However, diabetic patients who are older, have a lower level of education, and a low income will need to be informed about prevention and treatment of dermatophytoses.
Body Mass Index ; Surveys and Questionnaires ; Diabetes Mellitus ; Education ; Humans ; Periodicals ; Periodicals as Topic ; Primary Prevention ; Seoul ; Tinea*

Background and Objectives: Fibrin sealant (FS) is widely used to reduce postoperative bleeding. This analysis aimed to assess the efficacy of FS to reduce complications after rhinoplasty.Materials and Method We searched PubMed, Scopus, Embase, the Cochrane Library, and the Web of Science database for articles on FS and rhinoplasty from the inception of publication to December 29, 2021. Post-rhinoplasty complications, such as edema and ecchymosis, were recorded. The final meta-analysis was performed using three studies. Results: Two subgroups were created based on the FS usage after rhinoplasty. The FS effect on edema reduction was favorable on the postoperative day-1 (standardized mean difference [SMD]=-1.07 [-1.70; -0.45]). In addition, the FS effect on ecchymosis reduction was favorable on the postoperative day-1 postoperative (SMD=-1.33 [-2.15; -0.50]). Conclusion Our study shows that FS reduces the early complications of rhinoplasty.

OBJECTIVE: The purpose of this study was to titrate the nerve block effect of phenol with different concentrations of phenol solution by electrophysiological and mechanical measurements. METHOD: Right tibial nerves of twenty three adult rabbits were blocked by phenol solution with different concentrations (3%, 5%). Nerve conduction study for compound muscle action potential (CMAP), tension by electrical stimulation, and stiffness (slope) of stretch reflex of the triceps surae were performed after nerve block (4 weeks, 8 weeks, 16 weeks). The ratios of each values of right limb to those of left limb were used to evaluate the nerve block effect. RESULTS: The ratios of CMAP amplitude, tension, and slope of 3% group were 0.36, 0.55, and 0.56 at 4 weeks and those of 5% group were 0.21, 0.25, and 0.58. There were statistically significant differences of the CMAP amplitude and tension ratios, however there was no statistically significant difference of the slope ratio between two groups at 4 weeks. The ratios of CMAP amplitude, tension, and slope of 5% phenol group were increased with time. CONCLUSION: Nerve block effects by 5% phenol solution were greater than 3%. These data suggest that nerve block effect can be titrated with concentration of phenol solution.
Action Potentials ; Adult ; Electric Stimulation ; Extremities ; Humans ; Nerve Block* ; Neural Conduction ; Peripheral Nerves* ; Phenol* ; Rabbits ; Reflex, Stretch ; Tibial Nerve

No abstract available.
Astrocytoma ; Brain* ; Drug Therapy ; Glioblastoma ; Glioma* ; Humans ; Nimustine* ; Radiotherapy*