Revisiones bibliográficas. Documentación científica en Ortopedia y Traumatología, medicina deportiva, artroscopia, artroplastia y de todas las patologías del sistema Músculo-Esquelético
OBJECTIVE: Evaluate recent clinical studies involving the use of dexmedetomidine (DEX) infusion for the treatment of delirium in the intensive care unit (ICU). METHODS: A literature search was conducted to identify peer-reviewed articles in MEDLINE (1966-June 2016) using the terms sedation, analgesic, dexmedetomidine, delirium, and critically ill adult patients. RESULTS: Two studies in the ICU setting reported the potential benefits of DEX for managing agitation during weaning from mechanical ventilation. One pilot study and a clinical trial reported the use of DEX in the treatment of ICU delirium. CONCLUSION: Further studies are required to evaluate the use of DEX treatment in critically ill patients presenting with delirium.
BACKGROUND: Sedation reduces patient levels of anxiety and stress, facilitates the delivery of care and ensures safety. Alpha-2 agonists have a range of effects including sedation, analgesia and antianxiety. They sedate, but allow staff to interact with patients and do not suppress respiration. They are attractive alternatives for long-term sedation during mechanical ventilation in critically ill patients. OBJECTIVES: To assess the safety and efficacy of alpha-2 agonists for sedation of more than 24 hours, compared with traditional sedatives, in mechanically-ventilated critically ill patients. SEARCH METHODS: We searched the Cochrane Central Register of Controlled Trials (CENTRAL, Issue 10, 2014), MEDLINE (1946 to 9 October 2014), EMBASE (1980 to 9 October 2014), CINAHL (1982 to 9 October 2014), Latin American and Caribbean Health Sciences Literature (1982 to 9 October 2014), ISI Web of Science (1987 to 9 October 2014), Chinese Biological Medical Database (1978 to 9 October 2014) and China National Knowledge Infrastructure (1979 to 9 October 2014), the World Health Organization international clinical trials registry platform (to 9 October 2014), Current Controlled Trials metaRegister of controlled trials active registers (to 9 October 2014), the ClinicalTrials.gov database (to 9 October 2014), the conference proceedings citation index (to 9 October 2014) and the reference lists of included studies and previously published meta-analyses and systematic reviews for relevant studies. We imposed no language restriction. SELECTION CRITERIA: We included all randomized and quasi-randomized controlled trials comparing alpha-2 agonists (clonidine or dexmedetomidine) versus alternative sedatives for long-term sedation (more than 24 hours) during mechanical ventilation in critically ill patients. DATA COLLECTION AND ANALYSIS: Two review authors independently assessed study quality and extracted data. We contacted study authors for additional information. We performed meta-analyses when more than three studies were included, and selected a random-effects model due to expected clinical heterogeneity. We calculated the geometric mean difference for continuous outcomes and the risk ratio for dichotomous outcomes. We described the effects by values and 95% confidence intervals (CIs). We considered two-sided P < 0.05 to be statistically significant. MAIN RESULTS: Seven studies, covering 1624 participants, met the inclusion criteria. All included studies investigated adults and compared dexmedetomidine with traditional sedatives, including propofol, midazolam and lorazepam. Compared with traditional sedatives, dexmedetomidine reduced the geometric mean duration of mechanical ventilation by 22% (95% CI 10% to 33%; four studies, 1120 participants, low quality evidence), and consequently the length of stay in the intensive care unit (ICU) by 14% (95% CI 1% to 24%; five studies, 1223 participants, very low quality evidence). There was no evidence that dexmedetomidine decreased the risk of delirium (RR 0.85; 95% CI 0.63 to 1.14; seven studies, 1624 participants, very low quality evidence) as results were consistent with both no effect and appreciable benefit. Only one study assessed the risk of coma, but lacked methodological reliability (RR 0.69; 95% CI 0.55 to 0.86, very low quality evidence). Of all the adverse events included, the most commonly reported one was bradycardia, and we observed a doubled (111%) increase in the incidence of bradycardia (RR 2.11; 95% CI 1.39 to 3.20; six studies, 1587 participants, very low quality evidence). Our meta-analysis provided no evidence that dexmedetomidine had any impact on mortality (RR 0.99; 95% CI 0.79 to 1.24; six studies, 1584 participants, very low quality evidence). We observed high levels of heterogeneity in risk of delirium (I² = 70%), but due to the limited number of studies we were unable to determine the source of heterogeneity through subgroup analyses or meta-regression. We judged six of the seven studies to be at high risk of bias.
AUTHORS' CONCLUSIONS:
In this review, we found no eligible studies for children or for clonidine. Compared with traditional sedatives, long-term sedation using dexmedetomidine in critically ill adults reduced the duration of mechanical ventilation and ICU length of stay. There was no evidence for a beneficial effect on risk of delirium and the heterogeneity was high. The evidence for risk of coma was inadequate. The most common adverse event was bradycardia. No evidence indicated that dexmedetomidine changed mortality. The general quality of evidence ranged from very low to low, due to high risks of bias, serious inconsistency and imprecision, and strongly suspected publication bias. Future studies could pay more attention to children and to using clonidine
BACKGROUND: Dexmedetomidine is commonly used for sedation in the Intensive Care Unit (ICU), and its use may be associated with hypotension. We sought to determine predictors of dexmedetomidine-associated hypotension. METHODS: Retrospective, single-center study of 283 ICU patients in four adults ICUs over a 12 month period. Univariate analyses were performed to determine factors associated with dexmedetomidine-related hypotension. Risk factors significant at the 0.20 level in the univariate analysis were considered for inclusion into a step-wise multiple logistical regression model. RESULTS: Hypotension occurred in 121 (42.8%) patients with a median mean arterial pressure (MAP) nadir of 54 mmHg. Univariate analyses showed an association between hypotension and age (P = 0.03), Acute Physiology and Chronic Health Evaluation II (APACHE II) score (P = 0.02), baseline MAP (<0.001), admission to the cardiothoracic ICU (P = 0.05), history of coronary artery disease (P = 0.02), and postcardiac surgery (P = 0.0009). Admission to the medical ICU was associated with a decrease in development in hypotension (P = 0.03). There was a trend for hypotension with weight (P = 0.09) and history of congestive heart failure (P = 0.12) Only MAP prior to initiation (odds ratio [OR] 0.97, 95% confidence interval [95% CI] 0.95-0.99; P < 0.0001), APACHE II scores (OR 1.06, 95% CI 1.01-1.12; P = 0.017), and history of coronary artery disease (OR 0.48, 95% CI 0.26-0.90, P = 0.022) were independently associated with hypotension by multivariable analysis. CONCLUSIONS: Dexmedetomidine-associated hypotension is common. Preexisting low blood pressure, history of coronary artery disease, and higher acuity were identified as independent risk factors for dexmedetomidine-associated hypotension.
Courtesy: Prof Nabil Ebraheim, University of Toledo, Ohio, USAPublicado el 18 ene. 2017
.Dr. Ebraheim animated video illustrates the shoulder rotator cuff muscles and associated tears and types of imaging for these injuries.it is a shoulder animation video that explains the rotator cuff anatomy , the rotator cuff MRI , ROTATOR CUFF INJURY ,TEAR IS explained .rotator cuff surgery is also explained .rotator cuff rehab is important .The video explains the anatomy of the rotator cuff in relation to rotator cuff ,rotator cuff nerve supply ,rotator cuff function and rotator cuff action
Older people with hip fractures are often malnourished at the time of fracture, and subsequently have poor food intake. This is an update of a Cochrane review first published in 2000, and previously updated in 2010.
OBJECTIVES:
To review the effects (benefits and harms) of nutritional interventions in older people recovering from hip fracture.
AUTHORS’ CONCLUSIONS:
There is low-quality evidence that oral multinutrient supplements started before or soon after surgery may prevent complications within the first 12 months after hip fracture, but that they have no clear effect on mortality. There is very low-quality evidence that oral supplements may reduce ‘unfavourable outcome’ (death or complications) and that they do not result in an increased incidence of vomiting and diarrhoea. Adequately sized randomised trials with robust methodology are required. In particular, the role of dietetic assistants, and peripheral venous feeding or nasogastric feeding in very malnourished people require further evaluation.
Resumen
ANTECEDENTES:
Las personas mayores con fracturas de cadera a menudo están desnutridas en el momento de la fractura y, posteriormente, tienen una mala ingesta de alimentos. Esta es una actualización de una revisión Cochrane publicada por primera vez en 2000 y actualizada previamente en 2010.
OBJETIVOS:
Revisar los efectos (beneficios y daños) de las intervenciones nutricionales en las personas mayores que se recuperan de la fractura de cadera.
CONCLUSIONES DE LOS AUTORES:
Existe evidencia de baja calidad de que los suplementos de multinutrientes orales iniciados antes o poco después de la cirugía pueden prevenir complicaciones dentro de los primeros 12 meses después de la fractura de cadera, pero que no tienen un efecto claro en la mortalidad. Existe evidencia de muy baja calidad de que los suplementos orales pueden reducir el “resultado desfavorable” (muerte o complicaciones) y que no dan lugar a una mayor incidencia de vómitos y diarrea. Se requieren ensayos aleatorios de tamaño adecuado con metodología robusta. En particular, el papel de los asistentes dietéticos y la alimentación venosa periférica o la alimentación nasogástrica en personas muy desnutridas requieren mayor evaluación.
Courtesy: Saqib Rehman MD Director of Orthopaedic Trauma Temple University Philadelphia Pennsylvania, USA www.orthoclips.com
Pilon fractures- Surgical Pearls
Courtesy: Saqib Rehman MD
Director of Orthopaedic Trauma
Temple University
Philadelphia
Pennsylvania, USA
www.orthoclips.com
Publicado el 31 dic. 2015
Assessment and management of tibial pilon fractures for orthopaedic surgery residents. Lecture 2 of 3. Narrated, annotated video lecture from OrthoClips.com
Courtesy: Saqib Rehman MD