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Elective operation after acute complicated diverticulitis:Is it still mandatory?

World Journal of Gastroenterology 2014年第25期20卷 8166-8172页

作者： Valérie Bridoux Marlène Antor Lilian Schwarz Julien Cahais haitham khalil Francis Michot Jean-Jacques Tuech Department of Digestive Surgery Rouen University Hospital

AIM: To investigate recurrence rates, patterns and complications after nonoperatively managed complicated diverticulitis(CD).METHODS: A retrospective study of patients treated for CD was performed. CD was defined on computed tomography by the presence of a localized abscess, pelvic abscess or extraluminal air. For follow-up, patients were contacted by telephone. Numbers of elective surgeries, recurrences and abdominal pain were ***: A total of 114 patients(median age 57 years(range 29-97)), were admitted for CD. Nine patients required surgical intervention for failure of conservative therapy(Hartmann's procedure: n = 6; resection and colorectal anastomosis: n = 3). Of the 105 remaining patients, 24(22.9%) underwent elective sigmoid resection. The 81(71%) non-operated patients were all contacted after a median follow-up of 32 mo(4-63). Among them, six had developed a recurrent episodeof diverticulitis at a median follow-up of 12 mo(6-36); however, no patient required hospitalization. Sixtyeight patients(84%) were asymptomatic and 13(16%) had recurrent abdominal ***: Conservative policy is feasible and safe in 71% of cases, with a low medium-term recurrence risk.

关键词： Diverticulosis Diverticular abscess Hinchey classi

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An Extreme Value Approach to Test the Effect of Price Limits on Volatility

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Journal of Modern Accounting and Auditing 2013年第10期9卷 1382-1391页

作者： haitham Nobanee khalil Hilu Abu Dhabi University Abu Dhabi United Arab Emirates

Many stock exchanges around the world enforcing daily price limits on the amount asset prices can change to prevent the market from overreacting and to reduce volatility. Price limits are artificial boundaries set by market regulators who restrict price changes of a stock to a pre-specified range during a trading day or a single trading session. The primary aim of price limit rules is to stabilize the markets during panic trading, to moderate vitality by repressing excessive speculation, and to allow stocks to be traded at prices close to their fair value. However, their impact on the market is a somewhat unresolved issue (Harris, 1998). Using a methodology of comparing volatility based on the extreme value technique, the authors empirically investigate the impact of price limits on the volatility of the Stock Exchange of Thailand. The empirical results support price limits advocates, suggesting that price limits rules moderate stock price volatility.

关键词：极值方法波动性证券交易所价格变化市场反应测试人工边界价格波动

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