Traqueostomía en prematuros con displasia broncopulmonar grave / Tracheostomy in premature infants with severe bronchopulmonary dysplasia

Los recién nacidos con displasia broncopulmonar dependientes de ventilación mecánica a las 36 semanas, corresponden en general a prematuros menores de 27 semanas con morbilidad grave: enterocolitis, infecciones, retinopatía, retraso en el crecimiento y secuelas del neurodesarrollo. Si la extubación no es posible entre las 40 y 50 semanas, se indica una traqueostomía, normalmente acompañada de una gastrostomía. La decisión depende del apoyo ventilatorio, de la morbilidad asociada (neurológica, hipertensión pulmonar, lesiones de la vía aérea) y del grado de desnutrición. La traqueostomía optimiza el manejo ventilatorio, disminuye la necesidad de sedación, facilita la movilidad, la neurorrehabilitación y el alta al hogar en ventilación domiciliaria. La edad óptima de ejecución no está estandarizada, pero hay evidencia que muestra beneficios en el neurodesarrollo si se realiza antes de los 120 días de vida. La mayoría de los prematuros traqueostomizados son manejados en domicilio y a los 5 años ya se encuentran decanulados.

Newborns with bronchopulmonary dysplasia (BPD) dependent on mechanical ventilation at 36 weeks, generally correspond to newborns younger than 27 weeks with severe morbidity: enterocolitis, infections, retinopathy, growth retardation and neurodevelopmental sequelae. If extubation is not possible at 40-50 weeks post menstrual age, a tracheostomy is indicated, usually accompanied by a gastrostomy. The decision depends on ventilatory support, associated morbidity (neurological, pulmonary hypertension, airway lesions) and the degree of malnutrition. Tracheostomy optimizes ventilatory management, reduces the need for sedation, facilitates mobility, neurorehabilitation, and discharge on home ventilation. The optimal age for tracheostomy is not standardized, but there is evidence showing neurodevelopmental benefits if it is performed before 120 days. Most tracheostomized newborns are managed at home and at 5 years of age they are already decannulated.

Dietary Glycemic Index and Glycemic Load Are Positively Associated with Risk of Developing Metabolic Syndrome in Middle-Aged and Elderly Adults.

OBJECTIVES: To evaluate how glycemic index (GI) and glycemic load (GL) are associated with the metabolic syndrome (MetS) and its features in middle-aged and elderly adults at high cardiovascular risk. DESIGN: Prospective, longitudinal, population-based cohort. SETTING: PREvención con DIeta MEDiterránea study. PARTICIPANTS: Men and women (N = 6,606) divided into three age groups (<65, 65-74, ≥75). MEASUREMENTS: Energy and nutrient intake was evaluated using a validated 137-item food frequency questionnaire. MetS and its features were defined in accordance with the criteria of the American Heart Association and National Heart, Lung, and Blood Institute. RESULTS: A positive association was observed between GI and MetS prevalence in the youngest and middle age groups for participants without diabetes mellitus, but no relationship was found for those with diabetes mellitus. During the median follow-up of 4.8 years, higher GI and GL were related to greater risk of MetS in the middle age group, independent of the presence of diabetes mellitus. Changes in dietary GI were associated with risk of developing the high fasting glucose component of the MetS in the oldest age category, and changes in dietary GL were associated with risk of developing abdominal obesity, hypertriglyceridemia, low high-density lipoprotein cholesterol, and high blood pressure in the youngest age category. CONCLUSION: Dietary GI and GL have a potential role in the development of MetS and associated clinical features, with particular age-dependent considerations.

Empirically-derived food patterns and the risk of total mortality and cardiovascular events in the PREDIMED study.

BACKGROUND & AIMS: There is little evidence on post hoc-derived dietary patterns (DP) and all-cause mortality in Southern-European populations. Furthermore, the potential effect modification of a DP by a nutritional intervention has not been sufficiently assessed. We assessed the association between a posteriori defined baseline major DP and total mortality or cardiovascular events within each of the three arms of a large primary prevention trial (PREDIMED) where participants were randomized to two active interventions with Mediterranean-type diets or to a control group (allocated to a low-fat diet). DESIGN: We followed-up 7216 participants for a median of 4.3 years. A validated 137-item food-frequency questionnaire was administered. Baseline DP were ascertained through factor analysis based on 34 predefined groups. Cox regression models were used to estimate multivariable-adjusted hazard ratios (HR) for cardiovascular disease (CVD) or mortality across quartiles of DP within each of the three arms of the trial. RESULTS: We identified two major baseline DP: the first DP was rich in red and processed meats, alcohol, refined grains and whole dairy products and was labeled Western dietary pattern (WDP). The second DP corresponded to a "Mediterranean-type" dietary pattern (MDP). During follow-up, 328 participants died. After controlling for potential confounders, higher baseline adherence to the MDP was associated with lower risk of CVD (adjusted HR for fourth vs. first quartile: 0.52; 95% CI (Confidence Interval): 0.36, 0.74; p-trend <0.001) and all-cause mortality (adjusted HR: 0.53; 95% CI: 0.38, 0.75; p-trend <0.001), regardless of the allocated arm of the trial. An increasing mortality rate was found across increasing quartiles of the WDP in the control group (allocated to a low-fat diet), though the linear trend was not statistically significant (p = 0.098). CONCLUSIONS: Higher adherence to an empirically-derived MDP at baseline was associated with a reduced risk of CVD and mortality in the PREDIMED trial regardless of the allocated arm. The WDP was not associated with higher risk of mortality or cardiovascular events.

Olive oil intake and risk of cardiovascular disease and mortality in the PREDIMED Study.

BACKGROUND: It is unknown whether individuals at high cardiovascular risk sustain a benefit in cardiovascular disease from increased olive oil consumption. The aim was to assess the association between total olive oil intake, its varieties (extra virgin and common olive oil) and the risk of cardiovascular disease and mortality in a Mediterranean population at high cardiovascular risk. METHODS: We included 7,216 men and women at high cardiovascular risk, aged 55 to 80 years, from the PREvención con DIeta MEDiterránea (PREDIMED) study, a multicenter, randomized, controlled, clinical trial. Participants were randomized to one of three interventions: Mediterranean Diets supplemented with nuts or extra-virgin olive oil, or a control low-fat diet. The present analysis was conducted as an observational prospective cohort study. The median follow-up was 4.8 years. Cardiovascular disease (stroke, myocardial infarction and cardiovascular death) and mortality were ascertained by medical records and National Death Index. Olive oil consumption was evaluated with validated food frequency questionnaires. Multivariate Cox proportional hazards and generalized estimating equations were used to assess the association between baseline and yearly repeated measurements of olive oil intake, cardiovascular disease and mortality. RESULTS: During follow-up, 277 cardiovascular events and 323 deaths occurred. Participants in the highest energy-adjusted tertile of baseline total olive oil and extra-virgin olive oil consumption had 35% (HR: 0.65; 95% CI: 0.47 to 0.89) and 39% (HR: 0.61; 95% CI: 0.44 to 0.85) cardiovascular disease risk reduction, respectively, compared to the reference. Higher baseline total olive oil consumption was associated with 48% (HR: 0.52; 95% CI: 0.29 to 0.93) reduced risk of cardiovascular mortality. For each 10 g/d increase in extra-virgin olive oil consumption, cardiovascular disease and mortality risk decreased by 10% and 7%, respectively. No significant associations were found for cancer and all-cause mortality. The associations between cardiovascular events and extra virgin olive oil intake were significant in the Mediterranean diet intervention groups and not in the control group. CONCLUSIONS: Olive oil consumption, specifically the extra-virgin variety, is associated with reduced risks of cardiovascular disease and mortality in individuals at high cardiovascular risk. TRIAL REGISTRATION: This study was registered at controlled-trials.com (http://www.controlled-trials.com/ISRCTN35739639). International Standard Randomized Controlled Trial Number (ISRCTN): 35739639. Registration date: 5 October 2005.