Abstract:
BACKGROUND:The six minute walk test (6MWT) is an important physical performance measure used in older people. AIM:To assess the total distance walked and the physiological cost of the 6MWT in non-disabled older people. MATERIAL AND METHODS:Fifty six females aged 69 ± 5 years with a body mass index (BMI) of 31 ± 4 kg/m² and sixteen males aged 70 ± 7 years with a BIM of 29 ± 4 kg/m² underwent a 6MWT. The total distance walked was registered and the physiological cost (PC) of the test was calculated as the ratio between the difference of heart rate at work and at rest and the walking speed. The socioeconomic status (SES) of participants was determined using a questionnaire designed in Chile. RESULTS:Among participants of middle-lower and middle-upper SES, the PC was 0.43 ± 0.1 and 0.44 ± 0.09 beats/min, respectively, p = NS. Males of middle-upper SES had a significantly higher PC than their middle-lower SES counterparts. The total distance walked was 493 ± 58 and 501 ± 63 m among participants of upper and lower SES. The plateau in reserve heart rate appeared earlier among participants of upper SES of both genders. CONCLUSIONS:Older participants of middle-upper SES had a higher physiological efficiency during the execution of the 6MWT.
journal_name
Rev Med Chiljournal_title
Revista medica de Chileauthors
Medina PG,Mancilla ES,Muñoz RC,Escobar MCdoi
10.4067/S0034-98872015000400010subject
Has Abstractpub_date
2015-04-01 00:00:00pages
484-92issue
4eissn
0034-9887issn
0717-6163pii
S0034-98872015000400010journal_volume
143pub_type
杂志文章abstract:BACKGROUND:Basedow Graves disease (BGD) is the leading cause of hyperthyroidism. The characteristics of patients seen at a university hospital may differ from those described in the general population. AIM:To describe the clinical features of patients with BGD seen at a university hospital. MATERIAL AND METHODS:Revie...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:10.4067/S0034-98872017000400003
更新日期:2017-04-01 00:00:00
abstract::One thousand women hospitalized at a maternity were surveyed after their delivery or abortion about their first sexual intercourse and pregnancy. Mean age at the first sexual intercourse was 18.7 years and only 9.2% used a contraceptive method in spite that 20% were not willing to become pregnant. The mean age of sexu...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1995-07-01 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::Beta 2 microglobulin is a low molecular weight protein integrating the light chain HLA antigens. Its serum concentration is increased in different neoplasias and in renal failure. Using solid phase RIA we determined the concentration of beta 2 microglobulin in plasma and spinal fluid of 57 healthy individuals and pati...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1989-06-01 00:00:00
abstract:BACKGROUND:Beliefs about professionals' healthcare may influence healthcare behaviors. Such beliefs are in part the result of the interactions that professionals have with their patients. Recent studies highlight the importance of beliefs about physicians, their effect on health-care behaviors, and the requirement of c...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:10.4067/s0034-98872018000300308
更新日期:2018-03-01 00:00:00
abstract::We studied genetic polymorphism of isoniazid acetylation in 47 tuberculous patients treated with 4 drugs between Aug 1987 and Dec 1988. Inactivation of isoniazid was estimated from urine samples after administration of the drug (10 mg/kg). There were 18 slow and 29 fast acetylators. The frequency of the slow mutant ge...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1989-12-01 00:00:00
abstract::Constrictive Pericarditis (CP) is an unusual disease. Its most common causes are idiopathic or secondary to cardiac surgery. Less frequently it is caused by connective tissue diseases. We report a 30 years old woman hospitalized due to progressive dyspnea, chest pain and signs of right sided heart failure. During her ...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:10.4067/S0034-98872014000800015
更新日期:2014-08-01 00:00:00
abstract::An increased life expectancy is associated to a nation's progress. Life expectancy at birth is 78 years in developed countries, 72 in Latin America, 70 in China, 63 in Eastern Europe and 51 in Africa. Chile is the Latin American country with the higher increment in life expectancy, reaching 75 years at birth, during t...
journal_title:Revista medica de Chile
pub_type: 社论
doi:
更新日期:1999-06-01 00:00:00
abstract:BACKGROUND:Resistance of HIV to AZT is the result of mutations in the pol gene that codifies the enzyme reverse transcriptase. AIM:To assess the resistance to antiretroviral drugs in Chilean patients infected with HIV. MATERIAL AND METHODS:The presence of mutations was searched in 22 patients infected with HIV. The e...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1998-01-01 00:00:00
abstract::To study the rate of infection by Epstein Barr virus (EBV) in Santiago, Chile, the prevalence of antibody to the viral capsid antigen (VCA-IgG) was determined in a group of 663 healthy individuals grouped by age and socioeconomic level (SEL). In addition, several risk factors for infection were studied. VCA-IgG was de...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1995-12-01 00:00:00
abstract::The development of the subspecialties of internal medicine in the western world is reviewed from a historical perspective, focusing on the case of the United States of America. During the last decades, changes both in society and in medicine as a whole have prompted a great dispersion of medical practice styles, not a...
journal_title:Revista medica de Chile
pub_type: 历史文章,杂志文章
doi:
更新日期:1996-04-01 00:00:00
abstract:BACKGROUND:In Chile, leukemia is one of the diseases whose treatment is guaranteed by a special law called AUGE (universal access and explicit guaranties). Therefore, the knowledge of its treatment costs is of utmost importance. AIM:To determine and to characterize the direct costs of pharmacotherapy for leukemia at a...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:/S0034-98872009001200002
更新日期:2009-12-01 00:00:00
abstract::A 54 years old female patient with a mitral valve prolapse and a rheumatoid arthritis treated with steroids was admitted with dyspnea and hypotension, that started 30 min after taking a pill containing enapril and hydrochlorothiazide. Hemodynamic monitoring with a Swan-Ganz catheter showed a pulmonary capillary pressu...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1996-06-01 00:00:00
abstract:BACKGROUND:Acute appendicitis is the most common non obstetric surgical emergency during pregnancy. AIM:To asses our experience in the diagnosis and management of acute appendicitis occurring during pregnancy. PATIENTS AND METHODS:Data from all pregnant patients who were subjected to an appendectomy for a suspected a...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:10.4067/s0034-98872006000200002
更新日期:2006-02-01 00:00:00
abstract:BACKGROUND:Dopamine agonists (DA) effectively reduce tumor size of macroprolactinomas, with the consequent improvement of eventual visual impairment. AIM:To study the visual outcomes in patients with macroprolactinoma treated with DA. MATERIAL AND METHODS:Retrospective cohort study which included patients with macrop...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:10.4067/S0034-98872013000600001
更新日期:2013-06-01 00:00:00
abstract::Microbiology starts in Chile at the end of the XIXth century as part of the effort to develop basic sciences at the University of Chile Medical School. Publications by Vicente Izquierdo on gonorrheae and Alejandro del Río on the organisms of dysenteriae were pioneer works in this area. The field was progressively deve...
journal_title:Revista medica de Chile
pub_type: 历史文章,杂志文章
doi:
更新日期:1992-04-01 00:00:00
abstract:BACKGROUND:Non alcoholic fatty liver disease (NAFLD) is associated to diabetes mellitus, obesity, disturbances in serum lipid levels, insulin resistance and metabolic syndrome. AIM:To assess glucose tolerance and the presence of metabolic syndrome among patients with biopsy proven NAFLD. PATIENTS AND METHODS:Serum li...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:10.4067/s0034-98872006000900002
更新日期:2006-09-01 00:00:00
abstract::Congenital malformations of the spleen are rare. We report a patient with an ectopic spleen located in the left iliac fossa, which was excised in order to prevent severe complications such as torsion of the pedicle, rupture or infection. A second patient with idiopathic thrombocytopenic purpura presented with an acces...
journal_title:Revista medica de Chile
pub_type: 杂志文章,评审
doi:
更新日期:1989-12-01 00:00:00
abstract:BACKGROUND:Reproductive number (R0)-maps estimate risk zones of vector-borne diseases and geographical distribution changes under climate change. AIM:To map R0 aiming to estimate the epidemiological risk of Chagas disease in Chile, its distribution and possible changes due to the global climate change. MATERIAL AND M...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:10.4067/S0034-98872019000600683
更新日期:2019-06-01 00:00:00
abstract::We followed 50 type II diabetic patients undergoing various types of surgical procedures. Control of blood sugar was evaluated as percent of tests within an acceptable limit defined as 160 mg/dl in the preoperative period, 80-240 mg/dl in the early postoperative period and 80-120 mg/dl thereafter. Adequate control was...
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:Since February 2002, Flextend electrode catheters are used at the Cardiovascular Unit of the Catholic University Clinical Hospital. These transvenous catheters have an IS-1 connector, silicone coating, active fixation and retractile helix with dexamethasone acetate. AIM:To report early and one year results ...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:/S0034-98872006000600011
更新日期:2006-06-01 00:00:00
abstract:BACKGROUND:Secondhand smoke (SHS) is an established cause of morbidity and mortality among non-smokers. The workplace is an important source of exposure, especially among workers of restaurants, bars and nightclubs. AIM:To estimate the daily occupational exposure to SHS among non-smoking workers of bars and restaurant...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:/S0034-98872010001300007
更新日期:2010-12-01 00:00:00
abstract:BACKGROUND:The age at which children born preterm normalize their bone mineral density, is not well known. AIM:To study if children born preterm have normalized their bone mineral density at age 5 to 7 years. PATIENTS AND METHODS:Twenty six infants born preterm (14 male), were studied at age 5 to 7 years. Birth weigh...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:2003-11-01 00:00:00
abstract::Embryo cryopreservation improves efficiency and security of assisted reproduction techniques. Nonetheless, it can be questionable, so it must be justified from technical, legal and ethical points of view. This article analyses these perspectives. Embryo cryopreservation maximizes the probability of pregnancy, avoids n...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:10.4067/S0034-98872014000700011
更新日期:2014-07-01 00:00:00
abstract::Quality has a central role in medical care. The satisfaction of the rights of people to medical care, presupposes good quality medical acts. The meaning of quality goes further than a good attention based on scientific evidence and with competent skills. It comprises patient-physician relationship where professional b...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:2000-12-01 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::Starting of from the notion that medicine presents a plurality of aims, it is proposed that it should be conceived as a "science of actions" rather than as a "science of objects". Health is not a neutral "object" that could be unambiguously defined and approached from any vantage point solely with the standards of a d...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1989-11-01 00:00:00
abstract:BACKGROUND:Subacute combined degeneration is a clinical manifestation of vitamin B12 deficiency, that we observe with unusual frequency. AIM:To report a series of eleven patients with subacute combined degeneration. PATIENTS AND METHODS:Retrospective analysis of 11 patients hospitalized in a public hospital in Santia...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:10.4067/s0034-98872004001100006
更新日期:2004-11-01 00:00:00
abstract::Doppler-duplex has been widely used to quantify blood flow. Nevertheless, its usefulness in assessing portal vein flow (PVF) has been questioned due to technical problems: vessel cross sectional area measurements, interobserver variability, and PVF changes related to physiological events. This study was aimed to measu...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1991-05-01 00:00:00
abstract:BACKGROUND:The mucosa distal to the endoscopic mucosal change zone can have easily diagnosed early alterations, in patients with chronic gastroesophageal reflux. AIM:To determine the type of mucosa existent in the zone distal to the squamous-columnar junction in patients with chronic gastroesophageal reflux without in...
journal_title:Revista medica de Chile
pub_type: 杂志文章
doi:
更新日期:1999-12-01 00:00:00