RESUMO
This study aimed at describing selected hematological, biochemical, and acid-base variables of adult horses living at sea level and comparing them to those living at 5 different altitudes. One hundred and thirty-eight healthy Paso Fino horses > 2 years old were enrolled. Altitudes included the following: altitude A (0 to 50 m above sea level, masl; n = 23), B (1000 to 1050 masl; n = 25), C (1450 masl; n = 30), D (1950 to 2050 masl; n = 30), and E (2950 to 3100 masl; n = 30). A portable blood gas analyzer was used to determine selected biochemical and acid-base variables. Hematocrit (Htc) was measured by blood centrifugation and total plasma protein as total solids using a refractometer. A one-way ANOVA with Tukey's HSD post hoc test or a Wilcoxon signed-rank test, depending of the normality of the data, was conducted to compare groups. Horses at sea level had lower Htc (25% ± 2) and Hb (8 ± 0.8 mg/dL) concentration than those horses living ≥ 1000 masl (P < 0.05, for all comparisons). No differences in Htc and Hb were identified in horses living between 1000 and 3000 masl (P > 0.05, for all comparisons). The venous PvCO2 was significantly lower in horses living at altitudes ≥ 1000 masl than those living at 0 masl (42 ± 4.8 mmHg) (P = 0.001, for all comparisons). No differences in PvCO2 were identified in horses living between 1000 and 3000 masl. This study showed that the Htc, Hb, and PvCO2 of horses living at sea level were different compared to those in healthy horses living at altitudes ≥ 1000 masl. However, differences in TPP and electrolyte concentrations were not identified.
Assuntos
Altitude , Cavalos/sangue , Equilíbrio Ácido-Base , Análise de Variância , Animais , Análise Química do Sangue/veterinária , Colômbia , Feminino , Testes Hematológicos/veterinária , Masculino , Equilíbrio HidroeletrolíticoRESUMO
Los autores reportan los resultados de un estudio prospectivo sobre el uso de la heparina intraocular como agente antiproliferativo en cirugía vitreorretiniana y aceite de silicona, realizado en 51 pacientes (ojos), intervenidos en la Fundación Oftalmológica Nacional de Bogotá, Colombia, entre 1990 y 1992. Se realiza una comparación entre el grupo heparina y un grupo control en cuanto a la agudeza visual, seguimiento, reintervenciones, intervalo entre cirugías, éxito anatómico y complicaciones. No encontramos una diferencia estadísticamente significativa
Assuntos
Humanos , Masculino , Feminino , Adolescente , Adulto , Pessoa de Meia-Idade , Retina/cirurgia , Vitrectomia , Óleos de Silicone/uso terapêutico , Heparina/uso terapêutico , Olho , Corpo Vítreo , Oftalmologia , ColômbiaRESUMO
La Unidad de Genética clínica del Instituto de Genética Humana de la universidad Javeriana y la Fundación oftalmológica Nacional, realizaron un estudio piloto, para determinar las diferentes causas de la ceguera y visión subnormal en población institucionalizada en Colombia. Se evaluaron 1295 personas ciegas o con visión subnormal, adscritos a 23 institutos de 17 ciudades del país. Se realizó una completa evaluación médica general y genética, personal y familiar. Se determinaron las diferentes etiologías de la limitación visual en esta población, clasificándolas en tres grandes grupos : causa genética, causa no genética y causa indeterminada. El 31.3/100 correspondió a causas adquiridas o no genéticas. El 48.5/100 a causas genéticas, mientras que en el 20.2/100 no se pudo determinar la etiología básica de la patología.