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1.
Acute gastrointestinal bleeding is responsible for 1% to 2% of all hospital admissions in the United States annually. An awareness of common and uncommon pathologies will allow the clinician to develop a plan for the diagnostic evaluation that will lead to a diagnosis and localization of the bleeding site. Successful diagnosis and subsequent treatment are dependent on selecting the diagnostic tests that pinpoint the bleeding source accurately and in the most cost-effective manner.  相似文献   

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Diagnosis and intervention in pediatric GI bleeding is the shared responsibility of pediatric endoscopists, radiologists, and surgeons. Brisk hemorrhage, though alarming, is most often self-limited; few cases require urgent surgery before diagnostic evaluation is accomplished. The choice between endoscopic and radiographic evaluation varies with the differential diagnoses being considered and with local referral patterns. Many imaging options exist for assessing GI bleeding in children, but these options are generally narrowed by clinical history and age-appropriate differential possibilities.  相似文献   

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People recovering from pneumonia are often weak for no apparent reason. Clinical features such as postural hypotension, arrhythmia and syndrome of inappropriate ADH have, in other circumstances, been attributed to impaired autonomic function. The aim of this study was to see whether elderly patients with pneumonia had impaired autonomic cardiovascular reflexes and, if so, how long this persisted. We compared healthy elderly controls, elderly controls with trauma (fractured femoral neck) and elderly patients with pneumonia. Thirty-eight subjects were studied in a series of cardiovascular autonomic function tests. Results suggest that elderly people have a high prevalence of impaired cardiovascular autonomic reflexes in the immediate post-pneumonic phase, and that this improves significantly after six weeks, with a further improvement by six months. Elderly patients recovering from pneumonia are predisposed to the adverse effects of drugs and other factors which can further impair autonomic cardiovascular reflexes.  相似文献   

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Saudi Arabia has experienced a construction boom of unprecedented volume during the past decade, attracting construction professionals from all over the world. Construction industry was the greatest recipient of the government spending during both the First (1970–1975) and Second (1975–1980) National Development Plans. It has received 49.6% and 32% of total government expenditures during the two plans, respectively. Construction projects worth over U.S. S130 billion will be executed in the country between 1980 and 1985. Construction industry in Saudi Arabia employs 15% of the total labor force and uses 14% of the total energy consumption in the country. It contributes about 20% to the total non‐oil gross domestic product. The purpose of this paper is to describe the status and size of construction activities in Saudi Arabia. Construction facts and figures are cited, and a few examples are discussed in more details in order to help the reader visualize, evaluate and understand the size, diversity and type of the construction boom in Saudi Arabia. The future trends in the construction industry are discussed, and a few recommendations are included as well.  相似文献   

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Sterilization belongs to the safest contraceptive methods. The most popular sterilization procedure is by coagulation of the fallopian tube. The failure rate is mainly attributed to ectopic pregnancies which can lead to the risk of life.  相似文献   

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The data of 596 electro-hydrothermal coagulations in nonvariceal acute gastrointestinal bleeding were retrospectively evaluated and the results were compared to a previous period in which the endoscopic hemostasis was not regularly applied. Initial hemostasis was achieved in 96.1%, the rebleeding rate was 20.5%, perforation occurred in 0.5%. Comparing the two period the need of urgent surgery decreased from 9.2% to 3.4% (p < 0.05) and the mortality from 25.4% to 12% (p < 0.01). CONCLUSION: The electro-hydro-thermal coagulation is a safe and effective method in the treatment of nonvariceal gastrointestinal bleeding.  相似文献   

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Pre-eclampsia is pregnancy induced hypertension of unknown aetiology. There is a paucity of maternal data on the disease from this region and this study was undertaken to identify maternal and possible aetiologic factors associated with the disease in the north western region of Saudi Arabia. Seven hundred and five consecutive maternities which delivered from October 1990 till January 1991 at the Armed Forces Hospital were analysed. 2.8% of women in this community study developed pre-eclampsia. Women at extremes of maternal age, the nulliparous and high parity women; women with high body mass index, blood group O and those with no antenatal care or late booking in this study were at greater risk of developing pre-eclampsia when compared with controls who delivered in the same period. Of the babies born to mothers with pre-eclampsia, 46.7% were of low birthweight (< 2500g) while only 10.4% of controls were low birthweight. It is concluded that mothers with pre-eclampsia have to be identified early. Potential modifiable factors include reducing pregnancies at extremes of maternal age, among high parity women and encouraging early booking as well as regular attendance at the antenatal clinic.  相似文献   

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We retrospectively evaluated antiinfective therapy for methicillin-sensitive (MSSA) and methicillin-resistant Staphylococcus aureus (MRSA) endocarditis in 54 patients who had 57 treatment courses for the disease. Three treatments were assessed: 27 nafcillin-treated courses of MSSA endocarditis, 18 vancomycin-treated courses of MSSA endocarditis, and 11 vancomycin-treated courses of MRSA endocarditis. At baseline, patients with MSSA treated with vancomycin had more chronic conditions (p<0.01), a lower frequency of intravenous drug use (p<0.01), a lower hematocrit concentration (p<0.05), and a higher serum creatinine concentration (p<0.05) than the nafcillin group. Vancomycin-treated patients had a higher complication rate during therapy (p<0.05) and a longer duration in an intensive care unit (p<0.01) than the nafcillin group. The trend was for a higher complete response rate in the nafcillin group (74% vs 50%, p=0.12), but no difference in mortality (22% vs 28%, p=0.73). Patients with MRSA infection treated with vancomycin had higher mortality than those with MSSA who received that drug (55% vs 28%, p=0.24). Patients with vancomycin-treated MSSA endocarditis may have a poorer outcome than those who receive nafcillin, but this may be influenced by different or more severe clinical features.  相似文献   

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A patient in an intensive care unit experienced severe esophageal bleeding caused by erosion of a lusorian artery. The lusorian artery is a rare variant of the right subclavian artery. It originates in the descending aortic arch and crosses behind the esophagus to the right, sometimes generating esophageal compression. The patient's condition required respirator therapy and placement of a duodenal tube. At the point of crossing over of the lusorian artery and the esophagus, the duodenal tube caused esophageal necrosis, leading to erosion of the lusorian artery. This resulted in extensive esophageal bleeding, which at last required surgical intervention. To attain proper treatment and to avoid unnecessary diagnostic and therapeutic approaches, a lusorian artery lesion has to be included in the differential diagnosis of upper gastrointestinal bleeding.  相似文献   

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The centennial of the American Gastroenterological Association provides an occasion for a critical appraisal of past developments and future directions in endoscopy. The relevance of recent technologic advances in endoscopy must be questioned, and practical management issues need to be considered. New strategies are being developed that permit physicians to impact on the incidence and recurrence of bleeding peptic ulcers.  相似文献   

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Four outbreaks of gas bubble disease were encountered among farmed fish in Saudi Arabia. Two of them occurred among subadult (52.5 g) saltwater tilapia (Oreochromis spilurus), the first affecting about 50 per cent of the stock and resulting in about 30 per cent mortality, and the second affecting about 25 per cent of the population with about 5 per cent mortality. Another outbreak occurred among adult (270 g) brackish water (0.5 per cent salinity) tilapia (Oreochromis niloticus), affecting about 40 per cent of the population with about 25 per cent mortality. The fourth outbreak occurred among three-month-old (15 g) grouper (Epinephelus fuscogutiatus) and resulted in 10 per cent mortality. In all cases the total water gas pressure ranged between 111.2 and 113.4 per cent saturation and nitrogen was supersaturated while oxygen was undersaturated. The outbreaks were alleviated by reducing the gas pressure by splashing the source water or by switching to a source of water with lower gas pressure. However, in O niloticus the conditions of gas supersaturation resulted in a heavy infection by monogenetic trematodes which was treated with formalin at 40 mg/litre for seven hours on five successive days.  相似文献   

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OBJECTIVES: To determine the incidence and case fatality of acute upper gastrointestinal haemorrhage in the west of Scotland and to identify associated factors. DESIGN: Case ascertainment study. SETTING: All hospitals treating adults with acute upper gastrointestinal haemorrhage in the west of Scotland. SUBJECTS: 1882 patients aged 15 years and over treated in hospitals for acute upper gastrointestinal haemorrhage during a six month period. MAIN OUTCOME MEASURES: Incidence of acute upper gastrointestinal haemorrhage per 100,000 population per year, and case fatality. RESULTS: The annual incidence was 172 per 100,000 people aged 15 and over. The annual population mortality was 14.0 per 100,000. Both were higher among elderly people, men, and patients resident in areas of greater social deprivation. Overall case fatality was 8.2%. This was higher among those who bled as inpatients after admission for other reasons (42%) and those admitted as tertiary referrals (16%). Factors associated with increased case fatality were age, uraemia, pre-existing malignancy, hepatic failure, hypotension, cardiac failure, and frank haematemesis or a history of syncope at presentation. Social deprivation, sex, and anaemia were not associated with increased case fatality after adjustment for other factors. CONCLUSIONS: The incidence of acute upper gastrointestinal haemorrhage was 67% greater than the highest previously reported incidence in the United Kingdom, which may be partially attributable to the greater social deprivation in the west of Scotland and may be related to the increased prevalence of Helicobacter pylori. Fatality after acute upper gastrointestinal haemorrhage was associated with age, comorbidity, hypotension, and raised blood urea concentrations on admission. Although deprivation was associated with increased incidence, it was not related to the risk of fatality.  相似文献   

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Discusses the meaning of psychotherapy within the Saudi Arabian cultural context and examines the special manner in which psychotherapy is practiced. Issues regarding culture-related transference and countertransference, the sick role in a society, culturally appropriate denial of anger, and differences in therapeutic procedures and activities are discussed. It is suggested that issues of trust and identity must be discussed openly early in therapy so that the therapy will be grounded in reality. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

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