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排序方式: 共有277条查询结果,搜索用时 15 毫秒
61.
Unilateral hypertrophic osteoarthropathy in a patient with an infected axillary-axillary bypass graft 总被引:1,自引:0,他引:1
Hypertrophic osteoarthropathy (HO) is a specific clinicoradiologic entity, the most common cause of which is the presence of pulmonary lesions. Eight cases of aortic graft infection and aortoenteric fistulae in association with HO have been recognized. A case of an infected axillary-axillary graft presenting as unilateral HO of the upper limb is reported, and its unusual features are used to postulate a mechanism underlying HO. 相似文献
62.
Reznik RB Goldstein GB I. Ring 《Australian and New Zealand journal of public health》1986,10(2):197-204
Incidence rates and death rates for acute myocardial infarction (AMI) were compared in New South Wales and Queensland to investigate whether changes in death rates were correlated with changes in incidence rates. The incidence of AMI was 1.9 per cent higher for males and 14.9 per cent lower for females in Queensland than in New South Wales. Differences in age-specific incidence rates paralleled differences in age-specific death rates, suggesting that observed changes in death rates may reflect changes in incidence, rather than case-fatality. Risk factor patterns are broadly similar between the two states, apart from the prevalence of cigarette smoking which, like the incidence of AMI, is higher in males and lower in females in Queensland. 相似文献
63.
BACKGROUND: Adolescents in the United States have been shown to underutilize primary care services and therefore may rely heavily on emergency service. Although several small studies have explored local emergency services for youth, there are no published reports of adolescent utilization of emergency services on a national scale. Furthermore, emergency services data have not been aggregated according to the age subgroups used by the current guidelines for adolescent care. OBJECTIVE: To explore the utilization of emergency departments in the United States by early (11 to 14 years), middle (15 to 17 years), and late (18 to 21 years) adolescent subgroups. DESIGN: Secondary analysis of the emergency department component of the 1994 National Hospital Ambulatory Medical Care Survey. SETTING: Nationally representative sample of 418 emergency departments in the United States. PATIENTS: Approximately 26,547 visits by patients of all ages, representing 93.4 million total visits in 1994 and 14.8 million adolescent visits. OUTCOME MEASURES: Number of visits, health insurance, reasons for visits, urgency of visits, resulting diagnoses, and hospitalization rates. RESULTS: Adolescents accounted for 15.4% of the population and 15.8% of emergency department visits in 1994. Late adolescents were overrepresented in emergency department visits relative to their population proportion (6.8% of visits, 5.3% of population), whereas early adolescents were underrepresented (4.6% of visits, 5.9% of population). Lack of health insurance was more common among 11- to 21-year-olds (26.2%) than either children (13.6%) or adults (22.7%). By ages 18 to 21 years, 40.5% of male visits and 27.6% of female visits were uninsured. Injury-related visits were more common among adolescents (28.6%) than either children (23.1%) or adults (18.2%). Injury was the leading reason for visits among all adolescent age-sex subgroups (36.6% to 42.0% of male visits and 14.1% to 27.2% of female visits) except females aged 18 to 21 years for whom digestive reasons ranked first (18.8%). Injury was the leading diagnosis for all adolescent age-sex subgroups, with peaks at early adolescence of 61.6% for males and 45.8% for females. Across all adolescent age-sex subgroups, 3.1% to 5.3% of visits resulted in hospitalization, and 41.0% to 52.5% of visits were urgent. These rates did not differ from those of children but were lower than those of adults. CONCLUSIONS: Utilization of emergency departments increases and health insurance decreases during adolescence, suggesting that adolescents with inadequate health insurance may rely heavily on emergency departments for their health care needs. Most adolescent visits to emergency departments are not urgent and might be better treated through nonemergency, primary care sites. 相似文献
64.
Unilateral lung agenesis is a rare congenital condition of unknown etiology. A 33-year-old nullipara with right lung agenesis and scoliosis was admitted to the hospital at 30 weeks of gestation because of oligohydramnios. At 32 weeks she was treated for an upper respiratory tract infection with azithromycin. She went into premature labor at 34 weeks and was delivered by Cesarean for breech presentation. Both mother and infant did well. 相似文献
65.
66.
C Wilfert JE Aronson DT Beck AR Fleischman MW Kline LM Mofenson GB Scott DW Wara PN Whitley-Williams 《Pediatrics》1999,103(2):509-511
Although the character of acquired immunodeficiency syndrome is changing into a chronic illness, it is estimated that by the end of this century, 80 000 children and adolescents in the United States will be orphaned by parental death caused by human immunodeficiency virus infection. Plans for these children need to be made to ensure not only a stable, consistent environment that provides love and nurturing, but also the medical and social interventions necessary to cope with the tragic loss. Pediatricians should become aware of local laws and community resources and initiate discussion early in the course of parental illness to facilitate planning for the future care and custody of the children. States need to adopt laws and regulations that provide flexible approaches to guardianship and placement of children orphaned by acquired immunodeficiency syndrome. 相似文献
67.
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69.
Continuous activation and deactivation of integrin CD11b/CD18 during de novo expression enables rolling neutrophils to immobilize on platelets 总被引:2,自引:3,他引:2
In an in vitro flow model, unstimulated neutrophils rolled steadily over a surface coated with platelets, until superfusion of the chemotactic peptide formyl-methionyl-leucyl-phenylalanine (fMLP) caused a dose-dependent (10(-11) to 10(-7) mol/L) transition from rolling to stationary attachment in seconds, followed more slowly by neutrophil shape change and spreading on the surface, However, at low concentrations of Ca2+ and Mg2+ (0.1 mmol/L and 0.05 mmol/L, respectively, rather than physiologic 1 mmol/L and 0.5 mmol/L), neutrophils first halted but then started to roll again and to detach from the surface over 5 to 10 minutes. At the low cation concentration, stopping was largely inhibited by antibodies to the neutrophil integrins CD18 or CD11b, but not CD11a. When neutrophils were pretreated with antibodies to CD11b or CD18 in 1 mmol/L Ca2+ 0.5 mmol/L Mg2+, stopping was not prevented but delayed. However, if antibodies were also included with the superfused fMLP, stopping was inhibited, and detachment followed. This indicates that CD11b/CD18 was newly expressed during shape change and mediated the second phase of neutrophil immobilization and spreading in a cation-dependent manner. Prestimulated neutrophils also bound to platelets and spread, but immobilization was blocked if they were perfused with antibody to CD18 or CD11b or with low Ca2+ and Mg2+. Examining the cation-dependence further, it was evident that the presence of Mg2+ was essential for integrin-mediated adhesion and that the Mg2+ concentration determined whether immobilization could be maintained or was transient. Continuous superfusion of fMLP was also essential for maintenance of stable adhesion and spreading. Thus, activation of constitutive CD11b/CD18 rapidly and reversibly converted rolling to stationary attachment, whereas maintenance of adhesion and neutrophil spreading required continual expression of additional CD11b/CD18 that was only functional at physiologic Mg2+. Continual activation and deactivation of CD11b/CD18 during de novo expression could mediate immobilization and onward migration of neutrophils in vivo, and activated platelets appear capable of supporting this process as well as endothelial cells. 相似文献
70.
SJM van Leeuwen GB Proctor CMJ Potting S ten Hoopen LFJ van Groningen EM Bronkhorst NMA Blijlevens MCDNJM Huysmans 《Oral diseases》2018,24(6):972-982