1.Recurrent Desaturation Events due to Opioid-Induced Chest Wall Rigidity after Low Dose Fentanyl Administration.
Sung Yeon HAM ; Bo Ra LEE ; Taehoon HA ; Jeongmin KIM ; Sungwon NA
Korean Journal of Critical Care Medicine 2016;31(2):118-122
Opioid-induced chest wall rigidity is an uncommon complication of opioids. Because of this, it is often difficult to make a differential diagnosis in a mechanically ventilated patient who experiences increased airway pressure and difficulty with ventilation. A 76-year-old female patient was admitted to the intensive care unit (ICU) after surgery for periprosthetic fracture of the femur neck. On completion of the surgery, airway pressure was increased, and oxygen saturation fell below 95% after a bolus dose of fentanyl. After ICU admission, the same event recurred. Manual ventilation was immediately started, and a muscle relaxant relieved the symptoms. There was no sign or symptom suggesting airway obstruction or asthma on physical examination. Early recognition and treatment should be made in a mechanically ventilated patient experiencing increased airway pressure in order to prevent further deterioration.
Aged
;
Airway Obstruction
;
Analgesics, Opioid
;
Asthma
;
Diagnosis, Differential
;
Female
;
Femur Neck
;
Fentanyl*
;
Humans
;
Intensive Care Units
;
Lung Diseases, Obstructive
;
Muscle Rigidity
;
Oxygen
;
Periprosthetic Fractures
;
Physical Examination
;
Thoracic Wall*
;
Thorax*
;
Ventilation
2.Non-Convulsive Status Epilepticus following Liver Transplantation.
Bora LEE ; Nar Hyun MIN ; Sung Yeon HAM ; Sungwon NA ; Jeongmin KIM
Korean Journal of Critical Care Medicine 2016;31(1):49-53
Neurological complications following liver transplantation are more common than after other organ transplants. These complications include seizure in about 8% of cases, which is associated with morbidity and mortality. Seizure should be treated immediately, and the process of differential diagnosis has to be performed appropriately in order to avoid permanent neurologic deficit. We herein report a case of status epilepticus after liver transplantation. The status epilepticus was treated promptly and the cause of seizure was assessed. The patient was discharged without any complication.
Diagnosis, Differential
;
Humans
;
Liver Transplantation*
;
Liver*
;
Mortality
;
Neurologic Manifestations
;
Posterior Leukoencephalopathy Syndrome
;
Seizures
;
Status Epilepticus*
;
Transplants
3.Non-Convulsive Status Epilepticus following Liver Transplantation
Bora LEE ; Nar Hyun MIN ; Sung Yeon HAM ; Sungwon NA ; Jeongmin KIM
The Korean Journal of Critical Care Medicine 2016;31(1):49-53
Neurological complications following liver transplantation are more common than after other organ transplants. These complications include seizure in about 8% of cases, which is associated with morbidity and mortality. Seizure should be treated immediately, and the process of differential diagnosis has to be performed appropriately in order to avoid permanent neurologic deficit. We herein report a case of status epilepticus after liver transplantation. The status epilepticus was treated promptly and the cause of seizure was assessed. The patient was discharged without any complication.
Diagnosis, Differential
;
Humans
;
Liver Transplantation
;
Liver
;
Mortality
;
Neurologic Manifestations
;
Posterior Leukoencephalopathy Syndrome
;
Seizures
;
Status Epilepticus
;
Transplants
4.Recurrent Desaturation Events due to Opioid-Induced Chest Wall Rigidity after Low Dose Fentanyl Administration
Sung Yeon HAM ; Bo Ra LEE ; Taehoon HA ; Jeongmin KIM ; Sungwon NA
The Korean Journal of Critical Care Medicine 2016;31(2):118-122
Opioid-induced chest wall rigidity is an uncommon complication of opioids. Because of this, it is often difficult to make a differential diagnosis in a mechanically ventilated patient who experiences increased airway pressure and difficulty with ventilation. A 76-year-old female patient was admitted to the intensive care unit (ICU) after surgery for periprosthetic fracture of the femur neck. On completion of the surgery, airway pressure was increased, and oxygen saturation fell below 95% after a bolus dose of fentanyl. After ICU admission, the same event recurred. Manual ventilation was immediately started, and a muscle relaxant relieved the symptoms. There was no sign or symptom suggesting airway obstruction or asthma on physical examination. Early recognition and treatment should be made in a mechanically ventilated patient experiencing increased airway pressure in order to prevent further deterioration.
Aged
;
Airway Obstruction
;
Analgesics, Opioid
;
Asthma
;
Diagnosis, Differential
;
Female
;
Femur Neck
;
Fentanyl
;
Humans
;
Intensive Care Units
;
Lung Diseases, Obstructive
;
Muscle Rigidity
;
Oxygen
;
Periprosthetic Fractures
;
Physical Examination
;
Thoracic Wall
;
Thorax
;
Ventilation
5.Increased Transforming Growth Factor-beta1 in Alcohol Dependence.
Yong Ku KIM ; Boung Chul LEE ; Byung Joo HAM ; Byung Hwan YANG ; Sungwon ROH ; Joonho CHOI ; Tae Cheon KANG ; Young Gyu CHAI ; Ihn Geun CHOI
Journal of Korean Medical Science 2009;24(5):941-944
Ethanol and its metabolite acetaldehyde increase transforming growth factor beta1 (TGF-beta1) expression in animal studies. TGF-beta1 is related with the hepatic stellate cell (the key element of hepatic fibrogenesis) and the radial glia (the key element of neuronal migration). Blood samples were collected from 41 patients with alcohol dependence, TGF-beta1 levels measured by ELISA were compared with 41 normal subjects. Plasma TGF-beta1 levels in the patients with alcohol dependence (1,653.11+/-532.45 pg/mL) were significantly higher than those of healthy subjects (669.87+/-366.53 pg/mL) (P=0.000). Patients with or without liver pathology showed no difference in TGF-beta1 (P=0.36). Increased TGF-beta1 may mediate deleterious effect of alcohol such as hepatic fibrosis and suppressed neuronal developments in alcohol dependence patients.
Adult
;
Alcoholism/*blood
;
Enzyme-Linked Immunosorbent Assay
;
Humans
;
Liver Diseases/pathology/ultrasonography
;
Male
;
Middle Aged
;
Tomography, X-Ray Computed
;
Transforming Growth Factor beta1/*blood
6.Updated Primer on Generative Artificial Intelligence and Large Language Models in Medical Imaging for Medical Professionals
Kiduk KIM ; Kyungjin CHO ; Ryoungwoo JANG ; Sunggu KYUNG ; Soyoung LEE ; Sungwon HAM ; Edward CHOI ; Gil-Sun HONG ; Namkug KIM
Korean Journal of Radiology 2024;25(3):224-242
The emergence of Chat Generative Pre-trained Transformer (ChatGPT), a chatbot developed by OpenAI, has garnered interest in the application of generative artificial intelligence (AI) models in the medical field. This review summarizes different generative AI models and their potential applications in the field of medicine and explores the evolving landscape of Generative Adversarial Networks and diffusion models since the introduction of generative AI models. These models have made valuable contributions to the field of radiology. Furthermore, this review also explores the significance of synthetic data in addressing privacy concerns and augmenting data diversity and quality within the medical domain, in addition to emphasizing the role of inversion in the investigation of generative models and outlining an approach to replicate this process. We provide an overview of Large Language Models, such as GPTs and bidirectional encoder representations (BERTs), that focus on prominent representatives and discuss recent initiatives involving language-vision models in radiology, including innovative large language and vision assistant for biomedicine (LLaVa-Med), to illustrate their practical application.This comprehensive review offers insights into the wide-ranging applications of generative AI models in clinical research and emphasizes their transformative potential.
7.Development and Validation of a Model Using Radiomics Features from an Apparent Diffusion Coefficient Map to Diagnose Local Tumor Recurrence in Patients Treated for Head and Neck Squamous Cell Carcinoma
Minjae KIM ; Jeong Hyun LEE ; Leehi JOO ; Boryeong JEONG ; Seonok KIM ; Sungwon HAM ; Jihye YUN ; NamKug KIM ; Sae Rom CHUNG ; Young Jun CHOI ; Jung Hwan BAEK ; Ji Ye LEE ; Ji-hoon KIM
Korean Journal of Radiology 2022;23(11):1078-1088
Objective:
To develop and validate a model using radiomics features from apparent diffusion coefficient (ADC) map to diagnose local tumor recurrence in head and neck squamous cell carcinoma (HNSCC).
Materials and Methods:
This retrospective study included 285 patients (mean age ± standard deviation, 62 ± 12 years; 220 male, 77.2%), including 215 for training (n = 161) and internal validation (n = 54) and 70 others for external validation, with newly developed contrast-enhancing lesions at the primary cancer site on the surveillance MRI following definitive treatment of HNSCC between January 2014 and October 2019. Of the 215 and 70 patients, 127 and 34, respectively, had local tumor recurrence. Radiomics models using radiomics scores were created separately for T2-weighted imaging (T2WI), contrast-enhanced T1-weighted imaging (CE-T1WI), and ADC maps using non-zero coefficients from the least absolute shrinkage and selection operator in the training set. Receiver operating characteristic (ROC) analysis was used to evaluate the diagnostic performance of each radiomics score and known clinical parameter (age, sex, and clinical stage) in the internal and external validation sets.
Results:
Five radiomics features from T2WI, six from CE-T1WI, and nine from ADC maps were selected and used to develop the respective radiomics models. The area under ROC curve (AUROC) of ADC radiomics score was 0.76 (95% confidence interval [CI], 0.62–0.89) and 0.77 (95% CI, 0.65–0.88) in the internal and external validation sets, respectively. These were significantly higher than the AUROC values of T2WI (0.53 [95% CI, 0.40–0.67], p = 0.006), CE-T1WI (0.53 [95% CI, 0.40– 0.67], p = 0.012), and clinical parameters (0.53 [95% CI, 0.39–0.67], p = 0.021) in the external validation set.
Conclusion
The radiomics model using ADC maps exhibited higher diagnostic performance than those of the radiomics models using T2WI or CE-T1WI and clinical parameters in the diagnosis of local tumor recurrence in HNSCC following definitive treatment.