Abstract:
OBJECTIVE:To determine whether the detection of tuberculostearic acid (TBSA) in bronchial aspirate and bronchoalveolar lavage specimens is useful for the rapid diagnosis of active pulmonary tuberculosis in patients suspected of having the disease. SETTING:A pulmonary clinic in a teaching hospital. PATIENTS:Forty patients suspected of active pulmonary tuberculosis but who failed to produce sputum or whose sputum smears were negative for acid-fast bacilli on at least 3 occasions, 29 of whom were subsequently confirmed to have tuberculosis. A group of 13 patients who were having fiberoptic bronchoscopy for other reasons served as controls. INTERVENTION:All patients had fiberoptic bronchoscopy; bronchial aspirate, bronchoalveolar lavage, and sputum specimens were obtained when possible. MEASUREMENTS AND MAIN RESULTS:All specimens were examined microscopically for acid-fast bacilli, cultured for mycobacteria, and assayed for TBSA by gas chromatography and mass spectrometry with selected ion monitoring. Only 4 of the 29 patients with tuberculosis were diagnosed by direct microscopy compared with 26 by TBSA assay. In 2 patients who required surgical biopsy for conventional diagnosis, the TBSA test was positive. There were no false-positive TBSA results in the 13 controls, but 2 of 5 sputum specimens from the 11 test patients in whom tuberculosis was excluded were falsely positive, probably because of contamination with mouth flora. Because sputum can rarely be obtained from these patients and may give false-positive results, it is not a good specimen for TBSA assay. Sensitivities and specificities of the test for the other specimens were as follows: aspirate, 0.52 (CI, 0.32 to 0.71) and 1.00 (CI, 0.75 to 1.00); lavage, 0.68 (CI, 0.46 to 0.85) and 1.00 (CI, 0.84 to 1.00); aspirate and lavage combined, 0.79 (CI, 0.60 to 0.92) and 1.00 (CI, 0.86 to 1.00). CONCLUSIONS:The TBSA assay for bronchial aspirate and bronchoalveolar lavage fluid is useful for rapidly diagnosing "smear-negative" pulmonary tuberculosis. In these specimens it is highly specific and more sensitive than microscopy. This assay could be used to diagnose other mycobacterial infections, however, it cannot distinguish among species.
journal_name
Ann Intern Medjournal_title
Annals of internal medicineauthors
Pang JA,Chan HS,Chan CY,Cheung SW,French GLdoi
10.7326/0003-4819-111-8-650subject
Has Abstractpub_date
1989-10-15 00:00:00pages
650-4issue
8eissn
0003-4819issn
1539-3704journal_volume
111pub_type
杂志文章abstract:PURPOSE:To evaluate the possibility that fibrinogen represents a cardiovascular risk factor. DATA IDENTIFICATION:A computerized literature search (1980 to 1992) identified all published epidemiologic studies on fibrinogen and cardiovascular disease. Clinical and basic research data were found by separate searches. Ref...
journal_title:Annals of internal medicine
pub_type: 杂志文章,meta分析
doi:10.7326/0003-4819-118-12-199306150-00008
更新日期:1993-06-15 00:00:00
abstract:BACKGROUND:Current magnetic resonance techniques generate high signal from venous blood and show thrombi as filling defects. Magnetic resonance direct thrombus imaging (MRDTI) directly visualizes acute thrombus. OBJECTIVE:To determine the accuracy of MRDTI for diagnosis of acute symptomatic deep venous thrombosis (DVT...
journal_title:Annals of internal medicine
pub_type: 临床试验,杂志文章
doi:10.7326/0003-4819-136-2-200201150-00006
更新日期:2002-01-15 00:00:00
abstract::Tissues from guinea pigs inoculated intraperitoneally with the Legionnaires' disease (LD) bacterium were studied with light, immunofluorescent, and electron microscopy. The principal gross lesion was diffuse peritonitis of varying severity. Microscopically, the peritonitis of covered by a mixed inflammatory infiltrate...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-90-4-671
更新日期:1979-04-01 00:00:00
abstract:BACKGROUND:The comparative effectiveness of rheumatoid arthritis therapies is uncertain. PURPOSE:To compare the benefits and harms of disease-modifying antirheumatic drugs (DMARDs) for adults with rheumatoid arthritis. DATA SOURCES:Records limited to the English language and studies of adults were identified by using...
journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
doi:10.7326/0003-4819-148-2-200801150-00192
更新日期:2008-01-15 00:00:00
abstract:OBJECTIVE:To determine whether protruding atheromas in the thoracic aorta are a risk factor for systemic embolization. DESIGN:Case-control study. SETTING:A referral hospital. PATIENTS:A total of 122 patients with a history of stroke, transient ischemic attack, or peripheral emboli and an equal number of age- and sex...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-115-6-423
更新日期:1991-09-15 00:00:00
abstract:OBJECTIVE:To evaluate the relation between weight variability and death in high-risk, middle-aged men participating in the Multiple Risk Factor Intervention Trial (MRFIT). DESIGN:Cohort study with 3.8 years of follow-up. SETTING:Multicenter, collaborative, primary prevention trial conducted at 22 clinical centers in ...
journal_title:Annals of internal medicine
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.7326/0003-4819-119-7_part_2-199310011-00024
更新日期:1993-10-01 00:00:00
abstract::A retrospective analysis of the course of systemic lupus erythematosus in pregnant patients hospitalized at UCLA during a 15-year period provided important prognostic information. Women with systemic lupus erythematosus became pregnant if renal function was reasonably well preserved. Pregnancy infrequently posed a ser...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-94-5-667
更新日期:1981-05-01 00:00:00
abstract::Although disease caused by Arizona hinshawii is known to resemble the spectrum of clinical syndromes seen with Salmonella infections, little is known of their sensitivity to antimicrobials. We present three cases that are illustrative of Arizona sepsis, localized infection, or both; review the literature; and report s...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-85-5-587
更新日期:1976-11-01 00:00:00
abstract::An investigation of patient care in four hospitals compared levels of resource use between 1964 and 1974 for patients with a primary diagnosis of pneumonia. Results showed a decreased length of stay in all hospitals. Unique patterns of increases and decreases existed in each hospital for the changing use of diagnostic...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-85-5-648
更新日期:1976-11-01 00:00:00
abstract::Population screening for hemochromatosis done by using the transferrin saturation test has been advocated by experts to permit the initiation of therapeutic phlebotomy before the onset of clinical disease. The discovery of a gene associated with hemochromatosis has made DNA testing another option for screening and dia...
journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
doi:10.7326/0003-4819-129-11_part_2-199812011-00008
更新日期:1998-12-01 00:00:00
abstract::Fifty-three consecutive patients with inferior myocardial infarction were evaluated prospectively, by physical examination and right heart catheterization within 36 hours of the onset of symptoms, to determine whether physical findings can separate such patients into those with and without associated right ventricular...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-99-5-608
更新日期:1983-11-01 00:00:00
abstract::In alternative medicine, the main question regarding placebo has been whether a given therapy has more than a placebo effect. Just as mainstream medicine ignores the clinical significance of its own placebo effect, the placebo effect of unconventional medicine is disregarded except for polemics. This essay looks at th...
journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
doi:10.7326/0003-4819-136-11-200206040-00011
更新日期:2002-06-04 00:00:00
abstract:OBJECTIVE:To appraise the measurement properties of the Canadian Cardiovascular Society (CCS) classification of stable angina pectoris. DATA SOURCES:Relevant articles were identified through a MEDLINE search (1976 to November 1991). Bibliographies of retrieved articles were also reviewed. STUDY SELECTION:Studies chos...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-117-8-677
更新日期:1992-10-15 00:00:00
abstract:PURPOSE:To evaluate the use of thyroid function tests to monitor therapy in patients taking levothyroxine. DATA IDENTIFICATION:Studies published between 1966 and January 1990 were identified through computer searches and references of identified studies. STUDY SELECTION:Studies that included a careful description of ...
journal_title:Annals of internal medicine
pub_type: 杂志文章,meta分析
doi:10.7326/0003-4819-113-6-450
更新日期:1990-09-15 00:00:00
abstract:Background:In 1994, 40% of U.S. gun owners who had recently acquired a firearm did so without a background check. No contemporary estimates exist. Objective:To estimate the proportion of current U.S. gun owners who acquired their most recent firearm without a background check, by time since and manner of acquisition, ...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/M16-1590
更新日期:2017-02-21 00:00:00
abstract::We report a case of combined idiopathic immune neutropenia and immune thrombocytopenia (thromboneutropenia). Therapy with prednisone was ineffective. Treatment with vincristine raised the patient's platelet count but did not increase the neutrophil count. Splenectomy led to a prompt complete remission. Using radioimmu...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-93-5-704
更新日期:1980-11-01 00:00:00
abstract:STUDY OBJECTIVE:To determine the relative importance of adiposity and fat distribution to cardiovascular risk profile. DESIGN:A cross-sectional study. SETTING:Clinical research center funded by the National Institutes of Health. PATIENTS:Convenience sample of 33 healthy premenopausal women with a wide range of body ...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-110-11-867
更新日期:1989-06-01 00:00:00
abstract:BACKGROUND:High intake of folate may reduce risk for colon cancer, but the dosage and duration relations and the impact of dietary compared with supplementary sources are not well understood. OBJECTIVE:To evaluate the relation between folate intake and incidence of colon cancer. DESIGN:Prospective cohort study. SETT...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-129-7-199810010-00002
更新日期:1998-10-01 00:00:00
abstract:PURPOSE:To examine studies of normal colon and colorectal cancer for evidence that the location of the primary tumor proximal or distal to the splenic flexure of the colon may determine distinct genetic categories of this disease. DATA IDENTIFICATION:Studies were identified through a manual search of journals, through...
journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
doi:10.7326/0003-4819-113-10-779
更新日期:1990-11-15 00:00:00
abstract:BACKGROUND:Although clinicians avoid giving meropenem to patients with penicillin allergy because of potential cross-reactivity, the rate of cross-reactivity between penicillins and meropenem has not been prospectively determined. OBJECTIVE:To assess the tolerability of meropenem in patients with documented penicillin...
journal_title:Annals of internal medicine
pub_type: 临床试验,杂志文章,多中心研究
doi:10.7326/0003-4819-146-4-200702200-00005
更新日期:2007-02-20 00:00:00
abstract:BACKGROUND:Tobacco dependence is a chronic, relapsing condition that may require extended treatment. OBJECTIVE:To assess whether extended-duration transdermal nicotine therapy increases abstinence from tobacco more than standard-duration therapy in adult smokers. DESIGN:Parallel randomized, placebo-controlled trial f...
journal_title:Annals of internal medicine
pub_type: 杂志文章,随机对照试验
doi:10.7326/0003-4819-152-3-201002020-00005
更新日期:2010-02-02 00:00:00
abstract:BACKGROUND:Use of proton-pump inhibitors in the management of peptic ulcer bleeding is controversial because discrepant results have been reported in different ethnic groups. OBJECTIVE:To determine whether intravenous esomeprazole prevents recurrent peptic ulcer bleeding better than placebo in a multiethnic patient sa...
journal_title:Annals of internal medicine
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.7326/0003-4819-150-7-200904070-00105
更新日期:2009-04-07 00:00:00
abstract:BACKGROUND:Observations that risk for colorectal cancer is elevated in patients with inflammatory bowel disease and that long-term use of anti-inflammatory drugs may reduce colorectal cancer risk have raised the possibility that inflammation may play a role in the development of colorectal cancer. While a recent prospe...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-142-6-200503150-00008
更新日期:2005-03-15 00:00:00
abstract:SOURCE CITATION:Holm NR, Mäkikallio T, Lindsay MM, et al. Percutaneous coronary angioplasty versus coronary artery bypass grafting in the treatment of unprotected left main stenosis: updated 5-year outcomes from the randomised, non-inferiority NOBLE trial. Lancet. 2019;395:191-9. 31879028. ...
journal_title:Annals of internal medicine
pub_type: 评论,杂志文章
doi:10.7326/ACPJ202005190-055
更新日期:2020-05-19 00:00:00
abstract:PURPOSE:It is currently unknown whether intensive insulin treatment of diabetes decreases the risk for cardiovascular complications by lowering glucose levels or increases the risk by postulated direct atherogenic effects. This article reviews published data from two long-term, randomized clinical trials that compared ...
journal_title:Annals of internal medicine
pub_type: 杂志文章,meta分析
doi:10.7326/0003-4819-124-1_part_2-199601011-00005
更新日期:1996-01-01 00:00:00
abstract:BACKGROUND:Persons with abdominal aortic aneurysm are more likely to have a higher prevalence of risk factors for and clinical manifestations of cardiovascular disease. It is unknown whether these factors explain the high mortality rate associated with abdominal aortic aneurysm. OBJECTIVE:To describe the risk for mort...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-134-3-200102060-00008
更新日期:2001-02-06 00:00:00
abstract:BACKGROUND:The accuracy and harms of brief cognitive tests for identifying clinical Alzheimer-type dementia (CATD) are uncertain. PURPOSE:To summarize evidence on accuracy and harms of brief cognitive tests for CATD in older adults with suspected cognitive impairment. DATA SOURCES:Electronic bibliographic databases (...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/M19-3889
更新日期:2020-05-19 00:00:00
abstract:Background:More than half of enrollees in the U.S. Department of Veterans Affairs (VA) are also covered by Medicare and can choose to receive their prescriptions from VA or from Medicare-participating providers. Such dual-system care may lead to unsafe opioid use if providers in these 2 systems do not coordinate care o...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/M18-2574
更新日期:2019-04-02 00:00:00
abstract::A 42-year-old woman developed goitrous hypothyroidism while receiving ethionamide for treatment of an atypical mycobacterial infection. Five weeks after discontinuation of ethionamide therapy, thyroid function had returned to normal. The goitrogenic effect was studied in vitro by incubating ethionamide in various conc...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-100-6-837
更新日期:1984-06-01 00:00:00
abstract:Background:Iron chelation therapy (ICT) in patients with lower-risk myelodysplastic syndromes (MDS) has not been evaluated in randomized studies. Objective:To evaluate event-free survival (EFS) and safety of ICT in iron-overloaded patients with low- or intermediate-1-risk MDS. Design:Multicenter, randomized, double-b...
journal_title:Annals of internal medicine
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.7326/M19-0916
更新日期:2020-04-21 00:00:00