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Claus Herberhold - One of the best experts on this subject based on the ideXlab platform.
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recurrent laryngeal nerve palsy during anterior cervical spine surgery a prospective study
Journal of Neurosurgery, 2005Co-Authors: Axel Jung, Johannes Schramm, Kai Lehnerdt, Claus HerberholdAbstract:Object. Recurrent laryngeal nerve (RLN) palsy is a well-known complication of cervical spine surgery. Nearly all previous studies were performed without laryngoscopy in asymptomatic patients. This prospective study was undertaken to discern the true incidence of RLN palsy. Because not every RLN palsy is associated with hoarseness, the authors conducted a prospective study involving the use of pre- and postoperative laryngoscopy. Methods. Prior to anterior cervical spine surgery preoperative indirect laryngoscopy was performed in 123 patients to evaluate the status of the vocal cords as a sign of function of the RLN. To assess postoperative status in 120 patients laryngoscopy was repeated, and in cases of vocal cord malfunction follow-up examination was conducted 3 months later. In the group of 120 patients who attended follow-up examination, two (1.6%) had experienced a preoperative RLN palsy without hoarseness. Postoperatively the rate of clinically symptomatic RLN palsy was 8.3%, and the incidence of RLN palsy not associated with hoarseness (that is, clinically unapparent without laryngoscopy) was 15.9% (overall incidence 24.2%). At 3-month follow-up evaluation the rate had decreased to 2.5% in cases with hoarseness and 10.8% without hoarseness. Thus, the overall rate of early persisting RLN palsy was 11.3%. Conclusions. Laryngoscopy revealed that the true incidence of initial and persisting RLN palsy after anterior cervical spine surgery was much higher than anticipated. Especially in cases without hoarseness this could be proven, but the initial incidence of hoarseness was higher than expected. Only one third of new RLN palsy cases could be detected without laryngoscopy. Resolution of hoarseness was approximately 70% in those with preoperative hoarseness. The true rate of RLN palsy underscores the necessity to reevaluate the surgery- and intubation-related techniques for anterior cervical spine surgery and to reassess the degree of presurgical patient counseling.
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recurrent laryngeal nerve palsy during anterior cervical spine surgery a prospective study
Journal of Neurosurgery, 2005Co-Authors: Axel Jung, Johannes Schramm, Kai Lehnerdt, Claus HerberholdAbstract:Object. Recurrent laryngeal nerve (RLN) palsy is a well-known complication of cervical spine surgery. Nearly all previous studies were performed without laryngoscopy in asymptomatic patients. This prospective study was undertaken to discern the true incidence of RLN palsy. Because not every RLN palsy is associated with hoarseness, the authors conducted a prospective study involving the use of pre- and postoperative laryngoscopy. Methods. Prior to anterior cervical spine surgery preoperative indirect laryngoscopy was performed in 123 patients to evaluate the status of the vocal cords as a sign of function of the RLN. To assess postoperative status in 120 patients laryngoscopy was repeated, and in cases of vocal cord malfunction follow-up examination was conducted 3 months later. In the group of 120 patients who attended follow-up examination, two (1.6%) had experienced a preoperative RLN palsy without hoarseness. Postoperatively the rate of clinically symptomatic RLN palsy was 8.3%, and the incidence of RLN palsy not associated with hoarseness (that is, clinically unapparent without laryngoscopy) was 15.9% (overall incidence 24.2%). At 3-month follow-up evaluation the rate had decreased to 2.5% in cases with hoarseness and 10.8% without hoarseness. Thus, the overall rate of early persisting RLN palsy was 11.3%. Conclusions. Laryngoscopy revealed that the true incidence of initial and persisting RLN palsy after anterior cervical spine surgery was much higher than anticipated. Especially in cases without hoarseness this could be proven, but the initial incidence of hoarseness was higher than expected. Only one third of new RLN palsy cases could be detected without laryngoscopy. Resolution of hoarseness was approximately 70% in those with preoperative hoarseness. The true rate of RLN palsy underscores the necessity to reevaluate the surgery- and intubation-related techniques for anterior cervical spine surgery and to reassess the degree of presurgical patient counseling.
Jin Young Hwang - One of the best experts on this subject based on the ideXlab platform.
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effect of intraoperative neuromuscular blockade on postoperative sore throat and hoarseness in patients undergoing spinal surgery a prospective observational study
Scientific Reports, 2020Co-Authors: Dongwook Won, Jee Eun Chang, Hyerim Kim, Jung Man Lee, Jin Young HwangAbstract:Intraoperative neuromuscular blockade affects the resting tension between the vocal cords. We assessed the effect of neuromuscular blockade on postoperative sore throat and hoarseness following tracheal intubation in patients undergoing lumbar spinal surgery in the prone position. Altogether, 99 patients were included; 50 patients did not receive neuromuscular blockade, and 49 patients received moderate neuromuscular blockade during the maintenance of anesthesia. Neuromuscular blockade was performed depending on the use of intraoperative neurophysiological monitoring. The number of intubation attempts, time to achieve tracheal intubation, and duration of intubation were recorded accordingly. The incidence and severity of postoperative sore throat and hoarseness was assessed at 1, 6, and 24 h after surgery. The overall cumulative incidence of postoperative sore throat (60% vs. 59%, respectively; P = 1.000) and postoperative hoarseness (68% vs. 61%, respectively; P = 0.532) did not differ between the no neuromuscular blockade and moderate neuromuscular blockade. The incidence and severity of postoperative sore throat and hoarseness was also not different between the moderate and no neuromuscular blockade at each time point after surgery. Nevertheless, the incidences of postoperative sore throat and hoarseness were quite high. Further studies investigating strategies to alleviate them are warranted accordingly.
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effect of prophylactic benzydamine hydrochloride on postoperative sore throat and hoarseness after tracheal intubation using a double lumen endobronchial tube a randomized controlled trial
Canadian Journal of Anaesthesia-journal Canadien D Anesthesie, 2015Co-Authors: Jee Eun Chang, Sung Hee Han, Seong Won Min, Chong Soo Kim, Yong Suk Kwon, Jin Young HwangAbstract:We evaluated the prophylactic effect of benzydamine hydrochloride (BH) spray on postoperative sore throat and hoarseness secondary to intubation with a double-lumen endobronchial tube (DLT). Ninety-two adult patients undergoing thoracic surgery using DLT intubation were studied. The DLT cuff and oropharyngeal cavity were sprayed with normal saline (Group S; n = 46) or BH (Group BH; n = 46) prior to intubation. Postoperative sore throat and hoarseness were evaluated at one, six, and 24 hr after surgery. Sore throat was evaluated using a 0-100 mm visual analogue scale (VAS). Hoarseness was defined as a change in voice quality. Compared with Group S, postoperative sore throat occurred less frequently in Group BH at one hour (mean difference, 28.3%; 95% confidence interval [CI], 8.7 to 45.1; P = 0.01), at six hours (mean difference, 32.6%; 95% CI, 12.6 to 49.2; P < 0.01), and at 24 hr (mean difference, 28.3%; 95% CI, 9.3 to 44.7; P = 0.01) after surgery. Group BH had lower VAS scores for postoperative sore throat at one hour (mean difference, 12.8; 95% CI, 4.9 to 20.7), at six hours (mean difference, 11.9; 95% CI, 4.8 to 19.1; P < 0.01), and at 24 hr (mean difference, 5.3; 95% CI, 0.9 to 9.7; P = 0.01) after surgery. Hoarseness also occurred less frequently in Group BH at one hour (mean difference, 23.9%; 95% CI, 6.8 to 39.6; P = 0.01), at six hours (mean difference, 23.9%; 95% CI, 7.4 to 39.3; P = 0.01), and at 24 hr (mean difference, 21.7%; 95% CI, 5.5 to 37.0; P = 0.02) after surgery (P < 0.01). Prophylactic application of BH to the DLT cuff and oropharyngeal cavity reduces the incidence and severity of postoperative sore throat and the incidence of hoarseness associated with DLT intubation. The trial was registered at the Clinical Research Information Service (KCT0001068).
Axel Jung - One of the best experts on this subject based on the ideXlab platform.
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recurrent laryngeal nerve palsy during anterior cervical spine surgery a prospective study
Journal of Neurosurgery, 2005Co-Authors: Axel Jung, Johannes Schramm, Kai Lehnerdt, Claus HerberholdAbstract:Object. Recurrent laryngeal nerve (RLN) palsy is a well-known complication of cervical spine surgery. Nearly all previous studies were performed without laryngoscopy in asymptomatic patients. This prospective study was undertaken to discern the true incidence of RLN palsy. Because not every RLN palsy is associated with hoarseness, the authors conducted a prospective study involving the use of pre- and postoperative laryngoscopy. Methods. Prior to anterior cervical spine surgery preoperative indirect laryngoscopy was performed in 123 patients to evaluate the status of the vocal cords as a sign of function of the RLN. To assess postoperative status in 120 patients laryngoscopy was repeated, and in cases of vocal cord malfunction follow-up examination was conducted 3 months later. In the group of 120 patients who attended follow-up examination, two (1.6%) had experienced a preoperative RLN palsy without hoarseness. Postoperatively the rate of clinically symptomatic RLN palsy was 8.3%, and the incidence of RLN palsy not associated with hoarseness (that is, clinically unapparent without laryngoscopy) was 15.9% (overall incidence 24.2%). At 3-month follow-up evaluation the rate had decreased to 2.5% in cases with hoarseness and 10.8% without hoarseness. Thus, the overall rate of early persisting RLN palsy was 11.3%. Conclusions. Laryngoscopy revealed that the true incidence of initial and persisting RLN palsy after anterior cervical spine surgery was much higher than anticipated. Especially in cases without hoarseness this could be proven, but the initial incidence of hoarseness was higher than expected. Only one third of new RLN palsy cases could be detected without laryngoscopy. Resolution of hoarseness was approximately 70% in those with preoperative hoarseness. The true rate of RLN palsy underscores the necessity to reevaluate the surgery- and intubation-related techniques for anterior cervical spine surgery and to reassess the degree of presurgical patient counseling.
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recurrent laryngeal nerve palsy during anterior cervical spine surgery a prospective study
Journal of Neurosurgery, 2005Co-Authors: Axel Jung, Johannes Schramm, Kai Lehnerdt, Claus HerberholdAbstract:Object. Recurrent laryngeal nerve (RLN) palsy is a well-known complication of cervical spine surgery. Nearly all previous studies were performed without laryngoscopy in asymptomatic patients. This prospective study was undertaken to discern the true incidence of RLN palsy. Because not every RLN palsy is associated with hoarseness, the authors conducted a prospective study involving the use of pre- and postoperative laryngoscopy. Methods. Prior to anterior cervical spine surgery preoperative indirect laryngoscopy was performed in 123 patients to evaluate the status of the vocal cords as a sign of function of the RLN. To assess postoperative status in 120 patients laryngoscopy was repeated, and in cases of vocal cord malfunction follow-up examination was conducted 3 months later. In the group of 120 patients who attended follow-up examination, two (1.6%) had experienced a preoperative RLN palsy without hoarseness. Postoperatively the rate of clinically symptomatic RLN palsy was 8.3%, and the incidence of RLN palsy not associated with hoarseness (that is, clinically unapparent without laryngoscopy) was 15.9% (overall incidence 24.2%). At 3-month follow-up evaluation the rate had decreased to 2.5% in cases with hoarseness and 10.8% without hoarseness. Thus, the overall rate of early persisting RLN palsy was 11.3%. Conclusions. Laryngoscopy revealed that the true incidence of initial and persisting RLN palsy after anterior cervical spine surgery was much higher than anticipated. Especially in cases without hoarseness this could be proven, but the initial incidence of hoarseness was higher than expected. Only one third of new RLN palsy cases could be detected without laryngoscopy. Resolution of hoarseness was approximately 70% in those with preoperative hoarseness. The true rate of RLN palsy underscores the necessity to reevaluate the surgery- and intubation-related techniques for anterior cervical spine surgery and to reassess the degree of presurgical patient counseling.
Jose Manuel Sotohidalgo - One of the best experts on this subject based on the ideXlab platform.
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retrieving texture images using Coarseness fuzzy partitions
International Conference Information Processing, 2010Co-Authors: J Chamorromartinez, Pedro Manuel Martinezjimenez, Jose Manuel SotohidalgoAbstract:In this paper, a Fuzzy Dominant Texture Descriptor is proposed for semantically describing an image. This fuzzy descriptor is defined over a set of fuzzy sets modelling the “Coarseness” texture property. Concretely, fuzzy partitions on the domain of Coarseness measures are proposed, where the number of linguistic labels and the parameters of the membership functions are calculated relating representative Coarseness measures (our reference set) with the human perception of this texture property. Given a “texture fuzzy set”, its dominance in an image is analyzed and the dominance degree is used to obtain the image texture descriptor. Fuzzy operators over these descriptors are proposed to define conditions in image retrieval queries. The proposed framework makes database systems able to answer queries using texture-based linguistic labels in natural language.
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defining bidimensional fuzzy sets for visual Coarseness modelling
IEEE International Conference on Fuzzy Systems, 2009Co-Authors: J Chamorromartinez, Pedro Manuel Martinezjimenez, Jose Manuel SotohidalgoAbstract:In this paper, the texture feature ”Coarseness” is modelled by means of fuzzy sets, relating representative Coarseness measures (our reference set) with the human perception of this type of feature. In our study, a wide variety of measures have been analyzed, defining unidemsional and bidimensional fuzzy set for different combination of measures. The fineness human perception has been collected from polls filled by human subjects, performing an aggregation of their assessments by means of OWA operators. Using as reference set a combination of some measures, the membership function corresponding to the fuzzy set is modelled as the function which provides the best fit of the collected data.
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perceptually based functions for Coarseness textural feature representation
Iberian Conference on Pattern Recognition and Image Analysis, 2007Co-Authors: J Chamorromartinez, E Galanperales, Belen Pradossuarez, Jose Manuel SotohidalgoAbstract:Coarseness is a very important textural concept that has been widely analyzed in computer vision for years. However, a model which allows to represent different perception degrees of this textural concept in the same way that humans perceive texture is needed. In this paper we propose a model that associates computational measures to human perception by learning an appropriate function. To do it, different measures representative of Coarseness are chosen and subjects assessments are collected and aggregated. Finally, a function that relates these data is fitted.
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using fuzzy sets for Coarseness representation in texture images
IFSA (2), 2007Co-Authors: J Chamorromartinez, E Galanperales, Jose Manuel Sotohidalgo, Belen PradossuarezAbstract:Texture is a visual feature frequently used in image analysis that has associated certain vagueness. However, the majority of the approaches found in the literature do not either consider such vagueness or they do not take into account human perception to model the related uncertainty. In this paper we model the concept of ”Coarseness”, one of the most important textural features, by means of fuzzy sets and considering the way humans perceive this kind of texture. Specifically, we relate representative measures of Coarseness with its presence degree. To obtain these ”presence degrees”, we collect assessments from polls filled by human subjects, performing an aggregation of such assessments. Thus, the membership function corresponding to the fuzzy set ”Coarseness” is modelled by using as reference set the representative measures and the aggregated data.
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modelling Coarseness in texture images by means of fuzzy sets
Lecture Notes in Computer Science, 2006Co-Authors: J Chamorromartinez, E Galanperales, Daniel Sanchez, Jose Manuel SotohidalgoAbstract:In this paper we model the concept of Coarseness, typically used in texture image descriptions, by means of fuzzy sets. Specifically, we relate representative measures of this kind of texture with its presence degree. To obtain these presence degrees, we collect assessments from polls filled by human subjects, performing an aggregation of these assessments by means of OWA operators. Using this collected data, and some statistics as reference set, the membership function corresponding to the fuzzy set Coarseness is modelled.
Jee Eun Chang - One of the best experts on this subject based on the ideXlab platform.
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effect of intraoperative neuromuscular blockade on postoperative sore throat and hoarseness in patients undergoing spinal surgery a prospective observational study
Scientific Reports, 2020Co-Authors: Dongwook Won, Jee Eun Chang, Hyerim Kim, Jung Man Lee, Jin Young HwangAbstract:Intraoperative neuromuscular blockade affects the resting tension between the vocal cords. We assessed the effect of neuromuscular blockade on postoperative sore throat and hoarseness following tracheal intubation in patients undergoing lumbar spinal surgery in the prone position. Altogether, 99 patients were included; 50 patients did not receive neuromuscular blockade, and 49 patients received moderate neuromuscular blockade during the maintenance of anesthesia. Neuromuscular blockade was performed depending on the use of intraoperative neurophysiological monitoring. The number of intubation attempts, time to achieve tracheal intubation, and duration of intubation were recorded accordingly. The incidence and severity of postoperative sore throat and hoarseness was assessed at 1, 6, and 24 h after surgery. The overall cumulative incidence of postoperative sore throat (60% vs. 59%, respectively; P = 1.000) and postoperative hoarseness (68% vs. 61%, respectively; P = 0.532) did not differ between the no neuromuscular blockade and moderate neuromuscular blockade. The incidence and severity of postoperative sore throat and hoarseness was also not different between the moderate and no neuromuscular blockade at each time point after surgery. Nevertheless, the incidences of postoperative sore throat and hoarseness were quite high. Further studies investigating strategies to alleviate them are warranted accordingly.
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effect of prophylactic benzydamine hydrochloride on postoperative sore throat and hoarseness after tracheal intubation using a double lumen endobronchial tube a randomized controlled trial
Canadian Journal of Anaesthesia-journal Canadien D Anesthesie, 2015Co-Authors: Jee Eun Chang, Sung Hee Han, Seong Won Min, Chong Soo Kim, Yong Suk Kwon, Jin Young HwangAbstract:We evaluated the prophylactic effect of benzydamine hydrochloride (BH) spray on postoperative sore throat and hoarseness secondary to intubation with a double-lumen endobronchial tube (DLT). Ninety-two adult patients undergoing thoracic surgery using DLT intubation were studied. The DLT cuff and oropharyngeal cavity were sprayed with normal saline (Group S; n = 46) or BH (Group BH; n = 46) prior to intubation. Postoperative sore throat and hoarseness were evaluated at one, six, and 24 hr after surgery. Sore throat was evaluated using a 0-100 mm visual analogue scale (VAS). Hoarseness was defined as a change in voice quality. Compared with Group S, postoperative sore throat occurred less frequently in Group BH at one hour (mean difference, 28.3%; 95% confidence interval [CI], 8.7 to 45.1; P = 0.01), at six hours (mean difference, 32.6%; 95% CI, 12.6 to 49.2; P < 0.01), and at 24 hr (mean difference, 28.3%; 95% CI, 9.3 to 44.7; P = 0.01) after surgery. Group BH had lower VAS scores for postoperative sore throat at one hour (mean difference, 12.8; 95% CI, 4.9 to 20.7), at six hours (mean difference, 11.9; 95% CI, 4.8 to 19.1; P < 0.01), and at 24 hr (mean difference, 5.3; 95% CI, 0.9 to 9.7; P = 0.01) after surgery. Hoarseness also occurred less frequently in Group BH at one hour (mean difference, 23.9%; 95% CI, 6.8 to 39.6; P = 0.01), at six hours (mean difference, 23.9%; 95% CI, 7.4 to 39.3; P = 0.01), and at 24 hr (mean difference, 21.7%; 95% CI, 5.5 to 37.0; P = 0.02) after surgery (P < 0.01). Prophylactic application of BH to the DLT cuff and oropharyngeal cavity reduces the incidence and severity of postoperative sore throat and the incidence of hoarseness associated with DLT intubation. The trial was registered at the Clinical Research Information Service (KCT0001068).