1.Factor Structure of the Hamilton Depression Rating Scale for Patients with Major Depression with the Anxious Distress Specifier in DSM-5
Seung Hwan SUNG ; Young Sup WOO ; Won Myong BAHK
Mood and Emotion 2019;17(1):12-20
BACKGROUND: The factor structure of the Hamilton Depression Rating Scale (HDRS) is well validated for patients with major depressive disorder (MDD). We examined whether HDRS factors can measure the anxious distress specifier in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, in patients with MDD.METHODS: A retrospective chart review of patients with MDD between March 2012 and June 2015 was conducted. We extracted data on anxious distress symptoms and detailed clinical information and examined how the 5 HDRS factors (anhedonia/retardation, guilt/agitation, bodily symptoms, insomnia, and appetite) were related to the anxious distress specifier using the receiver operating characteristic (ROC) curve analysis and the area under the ROC curve analysis.RESULTS: We observed significant differences in the HDRS and Beck Depression Inventory scores between anxious distress and non-anxious distress groups at the index episode. The score for guilt/agitation factor was significantly higher than that for other factors in the anxious distress group and exhibited good predictive efficiency at baseline.CONCLUSION: Further investigation of the anxious distress specifier as a diagnostic entity would be worthwhile. In addition, the scores for guilt/agitation factor on the HDRS might be a promising marker for distinguishing patients with anxious distress from those with other subtypes of major depression, especially for the index episode.
Depression
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Depressive Disorder, Major
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Diagnostic and Statistical Manual of Mental Disorders
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Humans
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Retrospective Studies
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ROC Curve
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Sleep Initiation and Maintenance Disorders
2.A Case Report of Emergency Cricothyroidotomy Due to Tracheal Intubation Failure in the Patient with Posterior Glottic Stenosis Due to Inhalation Burn
Ilsang HAN ; Min Gi AN ; Ho June KANG ; Eun Sun PARK ; Young Woo CHO
Keimyung Medical Journal 2019;38(1,2):45-50
Injuries of the larynx are common in patients with a history of inhalation burns. When anesthesia is performed in such patients, the possibility of tracheal intubation should be thoroughly checked in advance, and preparation should be made in case of possible failure. 73-year-old woman who underwent laser cordotomy due to posterior glottic stenosis due to inhalation burn. Her height and weight were 140 cm and 58.9 kg. We proceeded anesthesia, because preoperative fiberoptic laryngoscopy and otolaryngology consultation showed that tracheal intubation was possible. However, the intubation failed and the manual ventilation was not performed afterwards, so the cricothyroidotomy was performed as an emergency. Anesthesia in patients with posterior glottic stenosis due to inhalation burns requires a great deal of attention and, above all, thorough evaluation in order to confirm the possibility of tracheal intubation. If this is not possible, you should look for alternatives and be prepared, and even if you think it's possible, try anesthesia with thorough preparation for the possible failure.
3.A Case Report of Emergency Cricothyroidotomy Due to Tracheal Intubation Failure in the Patient with Posterior Glottic Stenosis Due to Inhalation Burn
Ilsang HAN ; Min Gi AN ; Ho June KANG ; Eun Sun PARK ; Young Woo CHO
Keimyung Medical Journal 2019;38(1-2):45-50
Injuries of the larynx are common in patients with a history of inhalation burns. When anesthesia is performed in such patients, the possibility of tracheal intubation should be thoroughly checked in advance, and preparation should be made in case of possible failure. 73-year-old woman who underwent laser cordotomy due to posterior glottic stenosis due to inhalation burn. Her height and weight were 140 cm and 58.9 kg. We proceeded anesthesia, because preoperative fiberoptic laryngoscopy and otolaryngology consultation showed that tracheal intubation was possible. However, the intubation failed and the manual ventilation was not performed afterwards, so the cricothyroidotomy was performed as an emergency. Anesthesia in patients with posterior glottic stenosis due to inhalation burns requires a great deal of attention and, above all, thorough evaluation in order to confirm the possibility of tracheal intubation. If this is not possible, you should look for alternatives and be prepared, and even if you think it's possible, try anesthesia with thorough preparation for the possible failure.
4.A Case Report of Emergency Cricothyroidotomy Due to Tracheal Intubation Failure in the Patient with Posterior Glottic Stenosis Due to Inhalation Burn
Ilsang HAN ; Min Gi AN ; Ho June KANG ; Eun Sun PARK ; Young Woo CHO
Keimyung Medical Journal 2019;38(1):45-50
Injuries of the larynx are common in patients with a history of inhalation burns. When anesthesia is performed in such patients, the possibility of tracheal intubation should be thoroughly checked in advance, and preparation should be made in case of possible failure. 73-year-old woman who underwent laser cordotomy due to posterior glottic stenosis due to inhalation burn. Her height and weight were 140 cm and 58.9 kg. We proceeded anesthesia, because preoperative fiberoptic laryngoscopy and otolaryngology consultation showed that tracheal intubation was possible. However, the intubation failed and the manual ventilation was not performed afterwards, so the cricothyroidotomy was performed as an emergency. Anesthesia in patients with posterior glottic stenosis due to inhalation burns requires a great deal of attention and, above all, thorough evaluation in order to confirm the possibility of tracheal intubation. If this is not possible, you should look for alternatives and be prepared, and even if you think it's possible, try anesthesia with thorough preparation for the possible failure.
Aged
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Anesthesia
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Burns, Inhalation
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Constriction, Pathologic
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Cordotomy
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Emergencies
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Female
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Humans
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Inhalation
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Intubation
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Laryngoscopy
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Larynx
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Otolaryngology
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Ventilation
5.Acute normovolemic hemodilution for a patient with secondary polycythemia undergoing aortic valve replacement due to severe aortic stenosis - A case report -
Ilsang HAN ; Young Woo CHO ; Soon Eun PARK ; Min Gi AN ; Ho June KANG ; A-ran LEE
Anesthesia and Pain Medicine 2020;15(2):181-186
Background:
A high hematocrit level in patients with erythrocytosis is linked with increased blood viscosity and increased risk of thromboembolism. Therefore, it is necessary to adequately lower the hematocrit level before performing a high-risk surgery. Case: A 67-year-old man was scheduled for aortic valve replacement due to severe aortic stenosis. The preoperative hematocrit level of this patient was very high due to secondary polycythemia by hypoxia. We decided to perform acute normovolemic hemodilution after anesthetic induction to reduce the risk of thromboembolism in the patient. The patient was discharged after a successful surgery and a post-operative period without any side effects.
Conclusions
We estimate that patients with secondary polycythemia may benefit from acute normovolemic hemodilution to reduce their hematocrit levels while undergoing cardiac surgery using cardiopulmonary bypass. However, it is necessary to control the hematocrit level, since a significant decrease can cause side effects.
6.Fully Automatic Segmentation of Acute Ischemic Lesions on Diffusion-Weighted Imaging Using Convolutional Neural Networks: Comparison with Conventional Algorithms
Ilsang WOO ; Areum LEE ; Seung Chai JUNG ; Hyunna LEE ; Namkug KIM ; Se Jin CHO ; Donghyun KIM ; Jungbin LEE ; Leonard SUNWOO ; Dong Wha KANG
Korean Journal of Radiology 2019;20(8):1275-1284
OBJECTIVE: To develop algorithms using convolutional neural networks (CNNs) for automatic segmentation of acute ischemic lesions on diffusion-weighted imaging (DWI) and compare them with conventional algorithms, including a thresholding-based segmentation. MATERIALS AND METHODS: Between September 2005 and August 2015, 429 patients presenting with acute cerebral ischemia (training:validation:test set = 246:89:94) were retrospectively enrolled in this study, which was performed under Institutional Review Board approval. Ground truth segmentations for acute ischemic lesions on DWI were manually drawn under the consensus of two expert radiologists. CNN algorithms were developed using two-dimensional U-Net with squeeze-and-excitation blocks (U-Net) and a DenseNet with squeeze-and-excitation blocks (DenseNet) with squeeze-and-excitation operations for automatic segmentation of acute ischemic lesions on DWI. The CNN algorithms were compared with conventional algorithms based on DWI and the apparent diffusion coefficient (ADC) signal intensity. The performances of the algorithms were assessed using the Dice index with 5-fold cross-validation. The Dice indices were analyzed according to infarct volumes (< 10 mL, ≥ 10 mL), number of infarcts (≤ 5, 6–10, ≥ 11), and b-value of 1000 (b1000) signal intensities (< 50, 50–100, > 100), time intervals to DWI, and DWI protocols. RESULTS: The CNN algorithms were significantly superior to conventional algorithms (p < 0.001). Dice indices for the CNN algorithms were 0.85 for U-Net and DenseNet and 0.86 for an ensemble of U-Net and DenseNet, while the indices were 0.58 for ADC-b1000 and b1000-ADC and 0.52 for the commercial ADC algorithm. The Dice indices for small and large lesions, respectively, were 0.81 and 0.88 with U-Net, 0.80 and 0.88 with DenseNet, and 0.82 and 0.89 with the ensemble of U-Net and DenseNet. The CNN algorithms showed significant differences in Dice indices according to infarct volumes (p < 0.001). CONCLUSION: The CNN algorithm for automatic segmentation of acute ischemic lesions on DWI achieved Dice indices greater than or equal to 0.85 and showed superior performance to conventional algorithms.
Brain Ischemia
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Consensus
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Diffusion
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Ethics Committees, Research
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Humans
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Retrospective Studies