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Biomedical subjects

M Meza

Publications and source records attributed to M Meza.

14 recordsLinked to original sources
PubMed1997

[Shortened version of the Barcelona test (II): global standard score].

The aim of this study was to determine a global scoring method for a shortened and version of the Barcelona Neuropsychological test (TB) of 55 items. 341 healthy volunteers, 178 male (52.19%), and 163 female (47.1%) were studied. Age mean: 54.80, SD = 17.44. Subjects were stratified in five groups considering age and education. A scale of cut-off points was selected in order to divide the scores of each subtest into three bands (categories): 0 (lowest), 1 (intermediate), 2 (highest). Raw scores (possible range 0-110) were obtained and then were converted to a mean of 100 and SD of 15 each normative group. Tables of normative data were obtained for each group. This study shows the cognitive profiles of the TB and a global standard score related to them. This global score will provide new possibilities in the neuropsychological assessment of neurological patients.

Aged↗
PubMed1997

[Shortened version of the Barcelona test (III): criterion validity with the ADAS-Cog].

The aim of this study was to assess the criterion validity of a global score of an abbreviated version of the Barcelona Test (BTA), normalized for age and education, as a clinical neuropsychometric test for the assessment of cognitive impairment. This study made a correlational analysis between test scores of the BTA and scores of the cognitive part of the Alzheimer's Disease Assessment Scale (ADAS-Cog) adjusted for age and education. It was made in a University Hospital (Dementia Unit). A group of 172 subjects (74 male, 98 female) was distributed according the Global Deterioration Stages (GDS) from 1 to 6. GDS-1 (normal controls), n = 60; GDS-2 (subjective complaints), n = 27; GDS-3, n = 21, GDS-4, n = 22; GDS-5, n = 16; GDS 6, n = 26. All dementia patients fulfilled the NINCDS/ADRDA criteria. BTA global scores correlated significantly with adjusted scores on the ADAS-Cog (r = 0.872, r2 = 0.761), p < 0.0001. The BTA has a criterion validity as a clinical neuropsychometric test for the study of cognitive impairment.

Adult↗
PubMed1997

[Incidence of congenital malformations in 10 Chilean maternity hospitals that participate in the ECLAMC. Comparison of 3 periods (1971-1977, 1982-1988, 1989-1994)].

BACKGROUND: The Latin American Collaborative Study of Congenital Malformations is an epidemiological surveillance system for congenital malformations that operates in 11 Latin American Countries. AIM: To report the incidence of congenital malformations in 8 Chilean maternity hospitals participating in this study, between 1989 and 1994. MATERIAL AND METHODS: During the study period, 133,564 newborns and 1,196 stillbirths from 8 Chilean maternity hospitals were examined. These results were compared with those of a similar survey performed in 1982-1988. RESULTS: The proportion of stillbirths in the study period was 0.88%. There were 3,268 malformed newborns (2.42%) and 125 malformed stillbirths (10.45%). These proportion of malformations among newborns were lower and among stillbirths were higher than those reported for the rest of Latin American countries. When comparing the results with the previous survey, a reduction in the proportion of malformations among newborns was observed. However, in all Latin American countries, the prevalence of malformations in newborns and stillbirths increased in this period. In the period 1969-1995, in one Chilean hospital, maternal ages and the proportion of congenital malformation showed parallel and rising curves. CONCLUSIONS: This survey shows some differences in the prevalence of congenital malformations, when the figures are compared with other Latin American countries and with previous surveys.

Chile↗
PubMed1996

Myocardial contrast echocardiography: reliable, safe, and efficacious myocardial perfusion assessment after intravenous injections of a new echocardiographic contrast agent.

Reliable and reproducible myocardial opacification after intravenous administration of echocardiographic contrast agents has remained elusive. This study was performed to determine whether a new agent, FS069, a suspension of perfluoropropane-filled albumin microspheres (3.6 microns average microbubble size, concentration 8 x 8(8)/ml), could achieve safe and successful myocardial opacification in open-chest dogs. Seventeen dogs (group 1, n = 7, group 2, n = 10) underwent two-dimensional echocardiography before, during, and after the administration of intravenous FS069. Safety was evaluated by measuring arterial and pulmonary artery pressures, heart rate, blood gases, systolic function, myocardial blood flow, and postmortem analysis of myocardial viability by triphenyl-tetrazolium chloride staining. Efficacy to detect changes in regional myocardial perfusion was assessed by injecting FS069 at baseline, after sequential coronary occlusions and reperfusion, and during intravenous vasodilators with and without coronary occlusions. Results were compared with radiolabeled microspheres. FS069 was found to be safe and effective. In the absence of coronary occlusions, uniform myocardial opacification was observed in all dogs. A perfusion defect was observed in all dogs during coronary occlusions. Background-subtracted peak contrast intensity in the myocardium correctly identified regional myocardial blood flow changes and showed a significant correlation with radiolabeled microspheres (r = 0.65, p = 0.0001).

Albumins↗
PubMed1995

Dobutamine echocardiography and myocardial contrast echocardiography. Two new techniques for the assessment of myocardial viability.

As investigators have discovered that cardiac regions displaying resting wall motion abnormalities are not the necessary equivalent of myocardial scar (and therefore of irreversible injury) but are potentially viable regions rendered dysfunctional by stunning or hibernation, a new field of medicine has developed to identify viable myocardium that can improve in function after revascularization. Moreover, improvements in myocardial preservation and perfusion during coronary artery bypass grafting and percutaneous transluminal coronary angioplasty have enabled patients with poor resting ejection fractions to undergo safer revascularization. In this review, we describe briefly the diagnostic techniques most commonly used in identifying dysfunctional but viable myocardium. We give specific attention to the assets and limitations of these techniques and special emphasis to 2 promising new techniques: dobutamine echocardiography and myocardial contrast echocardiography.

Air↗
PubMed1992

Aberrant thymus--MR assessment.

Aberrant thymic tissue, particularly when it is located posteriorly, can present a diagnostic dilemma. Once a mediastinal "lesion" is defined on the plain film, MR is the most efficient and best diagnostic test for defining the nature of the mass and showing its relationship to other mediastinal structures. Two cases of aberrant thymic tissue, one on the right side and one on the left, are presented to elucidate the unique role of MRI.

Choristoma↗
PubMed1992

[Persistent microalbuminuria in insulin-dependent diabetics and cardiovascular risk factors].

A possible association of cardiovascular risk factors and early diabetic nephropathy was investigated in 32 patients. Microalbuminuria (radioimmunoassay), total and HDL cholesterol and triglycerides (enzymatic methods), glycosylated hemoglobin (colorimetric methods), Apo A1 and B (immunonephelometric) and LDL were measured. Microalbuminuria was present in 28% of patients. Compared to subjects with no microalbuminuria they had increased levels of cholesterol (200.2 +/- 13.5 (SE) vs 168.6 +/- 9.4 mg/dl, p < 0.025) and LDL cholesterol (171.9 +/- 14.1 vs 137.4 +/- 9.1 mg/dl, p < 0.025). Systolic blood pressure was also higher in patients with microalbuminuria (127.8 +/- 3.9 vs 114.5 +/- 2.8 mmHg, p < 0.01). Microalbuminuria was correlated to the level of diastolic blood pressure (r = 0.74, p < 0.025). Thus, persistent microalbuminuria in insulin dependent diabetic patients is associated to cardiovascular risk factors which may explain the increased cardiovascular morbidity and mortality in these patients.

Adolescent↗
PubMed1989

[Tuberculosis and diabetes mellitus: a longitudinal-retrospective study in a teaching hospital].

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 0.001). The risk of the diabetic population as a whole was 5.9% compared to 0.8% for the population at large. Thus, diabetics are a high risk group for tuberculosis, especially insulin-dependent patients whose risk is about 38 times higher than the general population under 40 years of age.

Actuarial Analysis↗
PubMed1983

A study in the relationship between emotional stability, intellectual ability, academic attainment, personal contentment and vocational aspirations.

This study investigated the relationship between ability, attainment and emotional stability, as measured by neuroticism, in underachieving, emotionally disturbed children. Forty children participated in four groups (mean age: 12.6, SD: 2.4; mean IQ: 103.3, SD: 13.6). Three experimental groups received different treatments in a therapeutic community, the fourth (control group) comprised children attending remedial units in mainstream education. For group 1 emphasis was on individualized education; for group 2 on psychological treatment and for group 3 on individualized education and psychological treatment combined. Pre- and post-experiment assessments were made on emotional stability, intelligence, reading, spelling and maths quotients, vocational aspirations and contentment with life. All the experimental groups showed significant improvements on all the criteria assessed. Group 3 improved most, P less than 0.001 on all criteria except contentment and vocational aspirations (P less than 0.01). The control group showed a deterioration over the experimental year on all criteria but mostly not at a significant level.

Achievement↗
PubMed1981

Postplacental manual insertion of the Multiload Copper 250 IUD.

A Multiload (ML) Cu 250 IUD was inserted manually immediately after childbirth in 200 volunteer women. The patients were followed up at 1, 3, 6, 12, and 24 months. There were no undesirable side effects and no serious complications occurred. No noteworthy bleeding occurred either in the postpartum period or subsequently. Maternal lactation was not affected. During the 2 years, 6 devices were removed for medical reasons and the IUD was expelled spontaneously in only 2 patients. 2 pregnancies occurred among the women who were followed up. Postpartum manual insertion of the ML Cu 250 is a very good method of postpartum contraception because there are no significant complications, the rate of expulsion is minimal, and the efficacy is quite high.

Age Factors↗
PubMedDate not supplied

Integrating nursing diagnoses, interventions, and outcomes in public health nursing practice.

TOPIC: Applying standardized nursing language in public health nursing practice. PURPOSE: To develop a charting format to document public health nursing practice based on standardized nursing language. SOURCES: Literature review of documentation systems for public health nursing practice. CONCLUSIONS: A task force of public health nurses developed a charting format based on Taxonomy I of Nursing Diagnosis (NANDA), Nursing Interventions Classification (NIC), and Nursing Outcomes Classification (NOC).

Forms and Records Control↗