Effect of L-carnitine on quality of life in covert hepatic encephalopathy: a randomized, double-blind, placebo-controlled study

Background/Aims@#L-carnitine is potentially beneficial in patients with hepatic encephalopathy (HE). We aimed to evaluate the impact of L-carnitine on the quality of life and liver function in patients with liver cirrhosis and covert HE. @*Methods@#We conducted an investigator-initiated, prospective, multi-center, double- blind, randomized phase III trial in patients with covert HE. A total of 150 patients were randomized 1:1 to L-carnitine (2 g/day) or placebo for 24 weeks. Changes in quality of life and liver function were assessed at 6 months. The model for end-stage liver disease (MELD), the 36-Item Short Form Survey (SF-36), the psychometric hepatic encephalopathy score (PHES), and the Stroop Test were evaluated in all patients. @*Results@#The total SF-36 score significantly improved in the L-carnitine group after 24 weeks (difference: median, 2; interquartile range, 0 to 11; p < 0.001); however, these values were comparable between the two groups. Furthermore, there was a significant ordinal improvement in PHES scores among patients with minimal HE who were in the L-carnitine group (p = 0.007). Changes in the total carnitine level also positively correlated with improvements in the Stroop test in the L-carnitine group (color test, r = 0.3; word test, r = 0.4; inhibition test, r = 0.5; inhibition/switching test, r = 0.3; all p < 0.05). Nevertheless, the MELD scores at week 24 did not differ between the groups. @*Conclusions@#Twenty-four weeks of L-carnitine supplementation was safe but ineffective in improving quality of life and liver function.

Gastric Cancer Accompanying Plummer-Vinson Syndrome

Plummer-Vinson syndrome (PVS), also called sideropenic dysphagia or Paterson-Kelly syndrome, is a condition characterized by a triad of chronic iron-deficiency anemia, esophageal webs, and dysphagia. This syndrome is considered as a precancerous condition due to the occurrence of squamous cell carcinoma in the hypopharynx, upper esophagus and oral cavity. Although exact data on the prevalence of the syndrome are not evidently available, physicians need to recognize this rare syndrome. Most of the patients are elderly Caucasian women aged 40 to 70 years, but cases in children, adolescents, or men have also been described. At present, the prevalence of PVS is decreasing due to improvement in nutritional habits and intake of iron supplements. Therefore, the syndrome accompanied with gastric cancer is even more uncommon. We report a case of a 61-year-old woman with PVS who was diagnosed with gastric cancer and improved after treatment.

Pivotal Role of Subcortical Structures as a Network Hub in Focal Epilepsy: Evidence from Graph Theoretical Analysis Based on Diffusion-Tensor Imaging

BACKGROUND AND PURPOSE: There is accumulating evidence that epilepsy is caused by network dysfunction. We evaluated the hub reorganization of subcortical structures in patients with focal epilepsy using graph theoretical analysis based on diffusion-tensor imaging (DTI). In addition, we investigated differences in the values of diffusion tensors and scalars, fractional anisotropy (FA), and mean diffusivity (MD) of subcortical structures between patients with focal epilepsy and healthy subjects. METHODS: One hundred patients with focal epilepsy and normal magnetic resonance imaging (MRI) findings and 80 age- and sex-matched healthy subjects were recruited prospectively. All subjects underwent DTI to obtain data suitable for graph theoretical analysis. We investigated the differences in the node strength, cluster coefficient, eigenvector centrality, page-rank centrality measures, FA, and MD of subcortical structures between patients with epilepsy and healthy subjects. RESULTS: After performing multiple corrections, the cluster coefficient and the eigenvector centrality of the globus pallidus were higher in patients with epilepsy than in healthy subjects (p=0.006 and p=0.008, respectively). In addition, the strength and the page-rank centrality of the globus pallidus tended to be higher in patients with epilepsy than in healthy subjects (p=0.092 and p=0.032, respectively). The cluster coefficient of the putamen was lower in patients with epilepsy than in healthy subjects (p=0.004). The FA values of the caudate nucleus and thalamus were significantly lower in patients with epilepsy than in healthy subjects (p=0.009 and p=0.007, respectively), whereas the MD value of the thalamus was higher than that in healthy subjects (p=0.005). CONCLUSIONS: We discovered the presence of hub reorganization of subcortical structures in focal epilepsy patients with normal MRI findings, suggesting that subcortical structures play a pivotal role as a hub in the epilepsy network. These findings further reinforce the idea that epilepsy is a network disease.

Safe and Simplified Salvage Technique for Exposed Implantable Cardiac Electronic Devices under Local Anesthesia

BACKGROUND: Skin erosion is a dire complication of implantable cardiac pacemakers and defibrillators. Classical treatments involve removal of the entire generator and lead systems, however, these may result in fatal complications. In this study, we present our experience with a simplified salvage technique for exposed implantable cardiac electronic devices (ICEDs) without removing the implanted device, in an attempt to reduce the risks and complication rates associated with this condition. METHODS: The records of 10 patients who experienced direct ICED exposure between January 2012 and December 2015 were retrospectively reviewed. The following surgical procedure was performed in all patients: removal of skin erosion and capsule, creation of a new pocket at least 1.0–1.5 cm inferior to its original position, migration of the ICED to the new pocket, and insertion of closed-suction drainage. Patients with gross local sepsis or septicemia were excluded from this study. RESULTS: Seven patients had cardiac pacemakers and the other 3 had implantable cardiac defibrillators. The time from primary ICED placement to exposure ranged from 0.3 to 151 months (mean, 29 months. Postoperative follow-up in this series ranged from 8 to 31 months (mean follow-up, 22 months). Among the 10 patients, none presented with any signs of overt infection or cutaneous lesions, except 1 patient with hematoma on postoperative day 5. The hematoma was successfully treated by surgical removal and repositioning of the closed-suction drainage. CONCLUSIONS: Based on our experience, salvage of exposed ICEDs is possible without removing the device in selected patients.

Acquired Long QT Syndrome Manifesting with Torsades de Pointes in a Patient with Panhypopituitarism due to Radiotherapy

We describe a 64-year-old male patient with panhypopituitarism who experienced polymorphic ventricular tachycardia (VT) associated with long QT intervals. The panhypopituitarism developed as a sequelae of radiation therapy administered 20 years prior to his current presentation and was recently aggravated by urinary tract infection with sepsis. In this case, polymorphic VT was resistant to conventional therapy (including magnesium infusion), and QT prolongation and T wave inversion were normalized after the administration of steroid and thyroid hormones. Thyroid hormone is generally known to be associated with torsades de pointes (TdP), but steroid or other hormones may also provoke TdP. Hormonal disorders should be considered as a cause of polymorphic VT with long QT intervals. Some arrhythmias can be life-threatening, and they can be prevented with supplementation of the insufficient hormone.

Symptoms from an Overdose of Caffeine

Caffeine is a very popular compound widely available in various beverages. It is generally regarded as safe, but several lethal outcomes have been reported after large overdoses. A 21-year-old woman was brought to the emergency department (ED) after ingestion of approximately 100 caffeine tablets, each containing 200 mg, resulting in a total amount of about 20,000 mg of caffeine. She was very irritable and complained about nausea, vomiting, and headaches. While the initial electrocardio graphy (ECG) showed ventricular bigeminy, most of the patient's symptoms were gone after supportive care with anti-emetics and benzodiazepine. The rhythm was converted to a sinus rhythm without anti-arrhythmics. Because caffeine tablets are unavailable in Korea, acute large-dose caffeine overdoses have been relatively rare. However, there is an increasing risk of caffeine exposure through highly concentrated "energy drinks" or caffeine tablets from purchases on-line. Thus, physicians should be prepared to deal with the severe toxic effects of an acute caffeine over-dose.

Reversible dilated cardiomyopathy caused by idiopathic hypoparathyroidism

Dilated cardiomyopathy (DCM) is usually an idiopathic disease with a poor prognosis. Hypocalcemia is a rare and reversible cause of DCM. Here, we report a 50-year-old female with DCM, induced by idiopathic hypoparathyroidism, that improved after treatment with calcium.

Safety Evaluation of Stamp Type Digital Microneedle Devices in Hairless Mice

BACKGROUND: Microneedles provide a minimally invasive means to transport molecules into the skin. A number of specific strategies have been employed to use microneedles for transdermal delivery. OBJECTIVE: The purpose of this study was to investigate the safety of two new digital microneedle devices (Digital Hand(R) and Digital Pro(R); Bomtech Electronics Co., Ltd., Seoul, Korea) for the perforation of skin in skin-hairless-1 mice. This device replaces conventional needles and is designed specifically for intradermal delivery. METHODS: We used two newly developed digital microneedle devices to perforate the skin of skin-hairless-1 mice. We conducted a comparative study of the two digital microneedle devices and DTS(R) (Disk type-microneedle Therapy System; DTS lab., Seoul, Korea). To evaluate skin stability, we performed visual and dermatoscopic inspections, measurements of transepidermal water loss, and biopsies. RESULTS: The two novel digital microneedle devices did not induce significant abnormalities of the skin on visual or dermatoscopic inspection, regardless of needle size (0.25~2.0 mm). No significant histopathological changes, such as inflammatory cell infiltration, desquamation of the stratum corneum, or disruption of the basal layer, were observed. The digital microneedle devices and microneedle therapy system produced similar results on measures of skin stability. CONCLUSION: These two novel digital microneedle devices are safe transdermal drug delivery systems.

Efficacy of Nutritional Therapy in Children with Crohn Disease / 대한소아소화기영양학회지

PURPOSE: Crohn disease (CD) in children is frequently complicated by malnutrition and growth retardation. Conventional treatment with corticosteroid may also affect the growth of children, which may be alleviated by nutritional therapy. Therefore, we performed this study to evaluate the role of nutritional therapy in the treatment of CD in children. METHODS: The study cohort consisted of thirty children under the age of 17 years, admitted to the Asan Medical Center from 2001 to 2005. While 11 children received nutritional therapy (NT) with an elemental diet, 19 received conventional corticosteroid therapy (ST). Comparative analysis was performed for the rate of the induction of remission, recurrence, disease activity index of pre and post-treatment, and changes of the growth using mean standard deviation score for weight (zW) and height (zH). RESULTS: Ten of 11 children with NT and 18 of 19 children with ST completed the therapy. Two of them were lost to follow-up during the treatment. All 10 children with NT and 15 of 18 children with ST achieved remission. While there was no recurrence in children with NT, 7 with ST showed recurrence within 1 year. Pre- and post treatment Pediatric Crohn disease Activity Index (PCDAI) did not show a difference between the two groups. There were no differences in zW and zH between the two groups after 1 year of follow-up. CONCLUSION: This study showed that nutritional therapy could be considered instead of steroid therapy for treatment of children with CD. However, a long-term study will be needed to determine the long-term efficacy.

Efficacy of Diclofenac versus Caroverine in the ED Treatment of Acute Ureteral Colic

BACKGROUND: Ureteral colic due to acute obstruction of urine flow is a frequent and painful condition presenting in the emergency department. Proper control of ureteral colic is important in the management of such a patient. Many drugs, including narcotics, had been used to control ureteral colic, and of them, nonsteroidal anti-inflammatory drugs are most commonly used. This study was carried out to compare the analgesic effect of diclofenac with that of caroverine which is used empirically in ureteral colic. METHODS: We carried out a randomized, prospective clinical trial in the emergency department of a university hospital. Sixty patients in whom ureteral colic had been diagnosed on the basis of physical signs and symptoms were included in this study. Each patients received an IM dose of diclofenac 75 mg, a IV bolus dose of caroverine 20 mg, or a continuous infusion of caroverine 60 mg. An additional dose of medication was added 20 min after the initial medication if needed. RESULTS: The main outcome was measured by using both the visual analogue scale(VAS), four-point categorial pain scale at times of 20, 40, and 60 min after initial medication. The requirement for supplemental medication was also measured. At 40 min, diclofenac was more effective than the other two treatments according to its pain- relieving capacity(p<0.05) and the categorial pain scale. By 60 min, caroverine continuous infusion was less effective than the other two treatments according to visual analogue scale(VAS) and the categorial pain scale(p<0.05). There were no significant differences between the diclofenac group and the caroverine bolus injection group at this time. The diclofenac group needed significantly less rescue medication for pain control(p<0.05). CONCLUSION: IM diclofenac, a non-steroidal antiinflammatory drug, was superior to the spasmolytics, single bolus or continuous intravenous infused, in treatment of ureteral colic.