Abstract:
:We analyze the effect of inspiratory muscle training (IMT) in patients with chronic obstructive pulmonary disease (COPD), with special emphasis on its effects on inspiratory muscle function and clinical outcomes. We reviewed only randomized, controlled studies that have either controlled both the load and the breathing pattern when using resistive training or have employed a threshold trainer in which the load is independent of the pattern of breathing, since methodological aspects may explain inconsistent results in the literature. In these circumstances, most of the studies demonstrated positive effects on inspiratory muscle function. Clinical effects were seldom evaluated; limited available data showed a reduction in dyspnea that was related to an increase in maximal inspiratory pressures (PIMax). When exercise capacity was evaluated through the distance the patients were able to walk in 6 or 12 minutes, most studies demonstrated a significant increase. Other reported positive effects were improvement in nocturnal SaO2, inspiratory muscle power output and maximal inspiratory flow rate. Based in this review, a recommended training regime appears to be an intermediate load (30-40% PIMax) using a threshold device for 30 minutes daily for at least 5 weeks. Although in the literature the criteria for selecting patients are not always well defined, we consider IMT as a helpful procedure for pulmonar rehabilitation in those patients with a moderately severe inspiratory muscle dysfunction presenting dyspnea during daily living activities despite optimal therapy.
journal_name
Rev Med Chiljournal_title
Revista medica de Chileauthors
Lisboa C,Borzone G,Cruz Esubject
Has Abstractpub_date
1998-05-01 00:00:00pages
563-8issue
5eissn
0034-9887issn
0717-6163journal_volume
126pub_type
杂志文章,评审abstract:BACKGROUND:Community-acquired pneumonia in adults is a serious health problem in the ambulatory care setting. AIM:To define clinical variables associated with the presence of pneumonia in adult patients presenting with fever or respiratory symptoms to the emergency department. MATERIAL AND METHODS:Prospective study c...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:10.4067/s0034-98872007000200001
更新日期:2007-02-01 00:00:00
abstract:BACKGROUND:In Chile, there is a high prevalence of cardiovascular diseases. Because atherosclerosis starts in childhood, it is important to assess serum lipid levels in children. AIM:To measure serum lipid levels in normal Chilean newborns. SUBJECTS AND METHODS:A sample of umbilical cord venous blood was obtained fro...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1998-09-01 00:00:00
abstract::From 1983 to 1987 we studied 30 patients with leukemia searching for chromosomal alterations. Cytogenetic studies of bone marrow showed an abnormal karyotype in 19 (67%). Seven out of 14 cases of acute leukemia presented different chromosomic alterations. The Philadelphia chromosome was found in 11 patients with chron...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1989-02-01 00:00:00
abstract::Technology for diabetes care has undergone major development during recent decades. These technological advances include continuous subcutaneous insulin infusion (CSII), also known as insulin pumps, and real-time continuous glucose monitoring system (RT-CGMS). The integration of CSII and RT-CGMS into a single device h...
journal_title:Revista medica de Chile
pub_type: 杂志文章,评审
doi:10.4067/S0034-98872017000500011
更新日期:2017-05-01 00:00:00
abstract::The aim of this study was to study the degree of cellular proliferation quantifying the immunohistochemical expression of the proliferating cell nuclear antigen. We assessed paraffin embedded samples of 25 infiltrating epidermoid cervical carcinomas, 76 precursor lesions (34 of low and 42 of high grade), 29 normal and...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1995-09-01 00:00:00
abstract::In order to increase awareness of the pandemic and to streamline control measures before any new outbreak of influenza we analyze the behavior of the cases of Chile and from 9 countries with more cases in 2009. Reproductive numbers, doubling times and estimations of susceptible and infected at the end of the epidemic ...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:/S0034-98872010000900016
更新日期:2010-09-01 00:00:00
abstract::We report a 56 years-old man presenting with chest pain with exercise, seven years after an orthotopic heart transplant. A coronary angiography showed an atherosclerotic lesion in the common left main coronary artery with more than 90% obstruction. The lesion was successfully treated with a transluminal angioplasty wi...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:/S0034-98872007001200012
更新日期:2007-12-01 00:00:00
abstract::A national network including 114 blood banks and laboratories performs screening for HIV infection on approximately 250,000 blood donors a year. This represents 100% coverage of blood transfusions performed in Chile. Up to December 1990. 4956 samples had been sent to the National Reference Center for AIDS for suppleme...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1991-11-01 00:00:00
abstract::Predicting the future of medicine is daring. One can speculate about some of its future traits at the most. The spectacular progress in biological sciences has nurtured the hope that medicine will be able to dominate all ailments, improve the quality of life and longevity. Physicians are uncomfortable with the weak kn...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1999-09-01 00:00:00
abstract::Several associations between alleles of the major histocompatibility system and alcoholic liver disease have been described. However, these are weak and change from one population to another. The aim of this work was to search for a possible genetic risk factor for alcoholic liver disease among Chilean alcoholics. We ...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1995-06-01 00:00:00
abstract::The association between Good's syndrome (hypogammaglobulinemia and thymoma) with pure red aplasia is very uncommon. We report a 70-year-old male, who had a thymoma excised nine years before. Afterwards, he suffered frequent respiratory infections, which were attributed to a humoral immunodeficiency. Nine years later, ...
journal_title:Revista medica de Chile
pub_type: 杂志文章,评审
doi:10.4067/S0034-98872012000800013
更新日期:2012-08-01 00:00:00
abstract::We report the case of a woman with rapidly progressive IgA nephropathy. She was treated with pulse methylprednisolone sodium succinate (1 g/d for three days), cyclophosphamide, dipyridamole and aspirin. The rapid progression of renal failure was apparently halted after 6 months. ...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1989-10-01 00:00:00
abstract:BACKGROUND:Exercise EKG is used as the test of choice in the diagnosis of coronary artery disease. Classical parameters are angor and ST depression representing myocardial ischemia. AIM:To correlate exercise EKG parameters with SPECT 201Thallium to know their likelihood ratios for ischemia. PATIENTS AND METHODS:Two h...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1998-05-01 00:00:00
abstract::In a short historical review of the outstanding changes occurred in the whole of endocrinology and particularly in Chile over the last 60 years -with the background of an infant mortality drop from 200 per thousand in 1940 to 8 per thousand today and a mean life expectancy increase from 42 to 76 years- the author outl...
journal_title:Revista medica de Chile
pub_type: 历史文章,杂志文章
doi:10.4067/s0034-98872005000600017
更新日期:2005-06-01 00:00:00
abstract::Geographical inequalities arising in the death of children under 1 year are studied. Causes regarded as avoidable at the present moment and leading to death are determined and the 27 Regional Chilean Health Services are ranked from best to worse in levels of mortality using cluster analysis. Results show that: 1) t...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1982-04-01 00:00:00
abstract::Recently, several groups have studied the influence of possible noxious elements present in the intrauterine environment which may favor the development of several diseases in the adult. There is evidence of an increased prevalence of some disorders in special risk groups of fetuses. In the small for gestational age p...
journal_title:Revista medica de Chile
pub_type: 杂志文章,评审
doi:
更新日期:2001-03-01 00:00:00
abstract:BACKGROUND:Hepatocellular carcinoma is the most frequent primary tumor of the liver. It is associated to chronic liver diseases and has a high prevalence in some regions of Africa and Asia. AIM:To describe the clinical characteristics of patients with hepatocellular carcinoma, admitted to two hospitals of the IX regio...
journal_title:Revista medica de Chile
pub_type: 杂志文章,多中心研究
doi:
更新日期:2000-08-01 00:00:00
abstract::A serologic study for prevalence of Chagas infection was performed in Salamanca, Northern Chile. Indirect immunofluorescence and indirect hemagglutination reactions were used in samples from 1529 females and 698 males representing 10% of the population. A total of 499 positive results were obtained. The incidence of i...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1991-04-01 00:00:00
abstract:BACKGROUND:Understanding how autonomous students are capable of regulating their own learning process is essential to develop self-directed teaching methods. AIM:To understand how self-directed medical students approach learning in medical schools at University of Concepción, Chile. MATERIAL AND METHODS:A qualitative...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:10.4067/S0034-98872015001200011
更新日期:2015-12-01 00:00:00
abstract:BACKGROUND:The relationship between patients and health professionals emphasizes deliberation and joint decision making, that derives in the informed consent. AIM:To evaluate decision making of patients in health care and to identify the notion of capacity for decision making, according to lawyers and physicians. MAT...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:10.4067/s0034-98872007000900009
更新日期:2007-09-01 00:00:00
abstract::Noncardiogenic pulmonary edema is a well recognized complication of upper airway obstruction. We report the case of a previously healthy 18-year-old male who presented this complication following laryngospasm after anesthesia. He developed severe pulmonary edema with hypoxemia, high cardiac output and low pulmonary ca...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1992-12-01 00:00:00
abstract::We analyzed 1529 diabetic patients seen between 1959 and 1982 at a teaching hospital in Concepción, Chile. 116 of them were insulin dependent diabetics. Gestational diabetes was excluded. The 10 year actuarial risk of acquiring tuberculosis was 24.2% for insulin-dependent diabetics and 4.8% for the rest (p less than 0...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1989-09-01 00:00:00
abstract::Myeloid sarcoma is a form of extra-medullary myeloid neoplasia. Cytogenetic characterization is hampered in the absence of invasion to the bone marrow, origin of cells that are usually studied in cytogenetic studies. We report a 13 years old mole presenting with a mass in the right shoulder. A biopsy of the tumor disc...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:/S0034-98872011000700013
更新日期:2011-07-01 00:00:00
abstract::Examinations performed beside the bed of patients ("Point-of-care testing, POCT") provide immediate results and are simple to perform. The most common of these tests is the self control of blood glucose levels in diabetic patients. The use of these devices at the hospital level, introduces a new set of requirements to...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:/S0034-98872009000900018
更新日期:2009-09-01 00:00:00
abstract:BACKGROUND:The risk of cardiovascular diseases is two to four times higher in diabetic patients. AIM:To study the severity of coronary disease and survival of patients with diabetes mellitus, compared to matched controls without diabetes. PATIENTS AND METHODS:A retrospective review of all coronary angiographies perfo...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:10.4067/s0034-98872004000300008
更新日期:2004-03-01 00:00:00
abstract::We investigated medical leaves of personnel at Temuco's hospital from 1986 to 1987. 57% of persons had at least one leave and 54% of these had 2 or more leaves. Women and paramedicals had more medical leaves. Most absences occurred in june, july, august (p less than 0.01). Most leaves were caused by respiratory diseas...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1989-07-01 00:00:00
abstract:BACKGROUND:Celiac disease (CD) is an immune-mediated enteropathy triggered by the ingestion of gluten in genetically susceptible individuals. Its prevalence in Europe and the USA is 0.5 to 1%. AIM:To analyze epidemiological aspects and degree of compliance with gluten-free diet (GFD) among Chilean individuals with CD....
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:/S0034-98872011000700003
更新日期:2011-07-01 00:00:00
abstract::We report a 29 years old male, with a history of cocaine abuse and excessive alcohol intake, who was admitted to the hospital with an acute peritonitis. The patient was operated and multiple perforations of the cecum were found. A right hemicolectomy was performed and the pathological study of the surgical piece showe...
journal_title:Revista medica de Chile
pub_type: 杂志文章,评审
doi:
更新日期:2002-06-01 00:00:00
abstract:BACKGROUND:There is no conclusive evidence about the association between physical fitness (PF) and health related quality of life (HRQOL) in older adults. AIM:To seek for an association between PF and HRQOL in non-disabled community-dwelling Chilean older adults. MATERIAL AND METHODS:One hundred and sixteen subjects ...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:10.4067/S0034-98872017000100008
更新日期:2017-01-01 00:00:00
abstract:BACKGROUND:Neonatal alloimmune thrombocytopenia (NAIT) is a result of fetomaternal incompatibility. Platelet destruction is caused by a maternal antibody directed against a fetal platelet antigen inherited from the father and lacking on the mother's platelets. The incidence and features of transplacental alloimmunizati...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1997-12-01 00:00:00