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- 저자 : Musheer (검색결과 6 건)
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( Musheer Shafqat ),( Hyung Hwan Moon ),( Dong Hoon Shin ),( Young Il Choi ) 대한간학회 2017 춘·추계 학술대회 (KASL) Vol.2017 No.1
Aims: ALPPS has recently been introduced as a new surgical technique to increase future liver remnant in patients with marginal liver volume contemplating major liver resection. Results: Case 1 A 68-year-old male patient with colorectal liver metastasis was referred to our department. The FLR was 22%. We performed first-stage ALPPS and CRS concurrently. The patient was discharged 28 days after the first-stage ALPPS procedure. Case 2 A 69-year-old male patient with a huge hepatic mass was referred for hepatic surgery. The FLR was 19%. After the first stage of the ALPPS procedure, acute renal failure and posthepatectomy liver failure occurred. The patient began to recover on the fifth postoperative day. At 10 days after the first stage, the patient completed the second-stage procedure. Conclusions: Many studies are currently underway to identify factors associated with the morbidity and mortality of the ALPPS procedure, it is necessary to continue follow-up studies and observe the results.
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Alcohol-related liver disease and liver transplantation
Shafqat Musheer,Jo Ji Hoon,문형환,최영일,Shin Dong Hoon 고신대학교(의대) 고신대학교 의과대학 학술지 2022 고신대학교 의과대학 학술지 Vol.37 No.2
Alcohol-related liver disease (ALD) has become the major cause of liver transplantation (LT) in Korea, and is currently the most common cause of LT in Europe and the United States. Although, ALD is one of the most common indications for LT, it is traditionally not considered as an option for patients with ALD due to organ shortages and concerns about relapse. To select patients with terminal liver disease due to ALD for transplants, most LT centers in the United States and European countries require a 6-month sober period before transplantation. However, Korea has a different social and cultural background than Western countries, and most organ transplants are made from living donors, who account for approximately twice as many procedures as deceased donors. Most LT centers in Korea do not require a specific period of sobriety before transplantation in patients with ALD. As per the literature, 8%–20% of patients resume alcohol consumption 1 year after LT, and this proportion increases to 30%–40% at 5 years post-LT, among which 10%–15% of patients resume heavy drinking. According to previous studies, the risk factors for alcohol relapse after LT are as follows: young age, poor familial and social support, family history of alcohol use disorder, previous history of alcohol-related treatment, shorter abstinence before LT, smoking, psychiatric disorders, irregular follow-up, and unemployment. Recognition of the risk factors, early detection of alcohol consumption after LT, and regular follow-up by a multidisciplinary team are important for improving the short- and long-term outcomes of LT patients with ALD.
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( Hyung Hwan Moon ),( Musheer Shafqat ),( Dong Hoon Shin ),( Young Il Choi ) 대한간학회 2017 춘·추계 학술대회 (KASL) Vol.2017 No.1
Aims: Intrahepatic arterioportal fistula is a rare but treatable cause of portal hypertension following liver transplant. Results: In the present case report, a 62-year-old female underwent cadaveric liver transplant for chronic hepatitis B with severe liver cirrhosis 8 years ago. Her immediate liver transplant post-operative course was complicated by episodes of acute cellular rejections. After then, this patient underwent percutaneous liver biopsies from the right anterosuperior area using a Tru-cut needle under ultrasound guidance before post transplant rejection therapy; however, no complications were encountered during procedures. Her episodes of acute cellular rejection responded to steroid therapy. After then this patient was performed routine follow-up for 8 years. An CT performed at this time showed a some vascular lesion in the superior aspect of the liver with turbulences and a mixture of arterys and portal veins consistent with an AV fisulas. The percutaneous liver biopsy of the right lobe, which was suspected to be causally related to the formation of the fistula. Follow-up endoscopy showed no esophageal and gastric varix. Her most recent liver enzymes are normal. She has no clinical symptom and sign and so the decision was made to watch and wait rather than intervene.
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Modified Multi-Chaotic Systems that are Based on Pixel Shuffle for Image Encryption
Verma, Om Prakash,Nizam, Munazza,Ahmad, Musheer Korea Information Processing Society 2013 Journal of information processing systems Vol.9 No.2
Recently, a pixel-chaotic-shuffling (PCS) method has been proposed by Huang et al. for encrypting color images using multiple chaotic systems like the Henon, the Lorenz, the Chua, and the Rossler systems. All of which have great encryption performance. The authors claimed that their pixel-chaotic-shuffle (PCS) encryption method has high confidential security. However, the security analysis of the PCS method against the chosen-plaintext attack (CPA) and known-plaintext attack (KPA) performed by Solak et al. successfully breaks the PCS encryption scheme without knowing the secret key. In this paper we present an improved shuffling pattern for the plaintext image bits to make the cryptosystem proposed by Huang et al. resistant to chosen-plaintext attack and known-plaintext attack. The modifications in the existing PCS encryption method are proposed to improve its security performance against the potential attacks described above. The Number of Pixel Change Rate (NPCR), Unified Average Changed Intensity (UACI), information entropy, and correlation coefficient analysis are performed to evaluate the statistical performance of the modified PCS method. The simulation analysis reveals that the modified PCS method has better statistical features and is more resistant to attacks than Huang et al.'s PCS method.
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( Dong Hoon Shin ),( Young Il Choi ),( Musheer Shafqat ),( Hyung Hwan Moon ),( Yena Kim ),( Yeon Sun Jung ),( Im Hak ),( Hyung-joo Chung ) 대한간학회 2018 춘·추계 학술대회 (KASL) Vol.2018 No.1
Aims: The development of renal dysfunction before and after liver transplantation is a complicated, mulifactered, and critical issue that affect recovery after liver transplantation. The aim of this study is to review the courses of LT recipients who needed dialysis pre and post LT at our center. Methods: We reviewed the medical records of 21 LT recipient from May 2015 to September 2017 at our center. We com pared their clinical demographic, morbidity, and motality be tween dialysis pre and post LT patients and those not needed. Results: We have performed 21 liver transplants from May 2015 to August 2017. Among them, 8 patients had peri-trans plant dialysis and 13 patients did not. Patients who underwent dialysis had more frequent acute renal injury pretransplantly, a higher preoperative MELD (41.5 vs 12, P<0.001) and longer post LT hospital stay (32 vs 22 days). However, there was no significant difference between the two groups in terms of se rum creatinine (1.06 vs 0.89 mg/dl, P=0.256) for first week, (0.80 vs 0.70 mg/dl, P=0.427) for first month (1.12 vs 0.89 mg/ dl P=0.256) for third months. One patient in the dialysis group died of graft failure due to HAT for 26th days postoperatively, but there was no significant difference in mortality between the two groups (P=0.400). Conclusions: In most cases, kidney function is recovering within a few weeks of transplantation. However, long-term follow-up is required for more patients for more concrete conclusions.
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