The impact of helmets on motorcycle head trauma at a tertiary hospital in Jamaica

<p>Abstract</p> <p>Background</p> <p>Although the Jamaica road traffic act mandates motorcycle riders to wear approved helmets, opponents suggest that the local road conditions obviate any benefits from helmet use that have been proven in Developed countries. They suggest that the narrow, winding, poorly surfaced, congested local highways do not allow motorcyclists to sustain high velocity travel. The accidents then tend to occur at lower speeds and are accompanied by less severe injuries. This study was carried out to determine the impact of helmet use on traumatic brain injuries from motorcycle collisions in patients admitted to a tertiary referral hospital in Jamaica.</p> <p>Methods</p> <p>A prospectively collected trauma registry maintained by the Department of Surgery at the University Hospital of the West Indies in Jamaica was accessed to identify all motorcycle collision victims from January 2000 to January 2007. The therapeutic outcomes of traumatic brain injuries were compared between helmeted and un-helmeted riders. The data was analyzed using SPSS Version 12.</p> <p>Results</p> <p>Of 293 motorcycle collision victims, 143 sustained brain injuries. There were 9 females (6.3%) with an average age of 23 +/- 7.3 years and 134 males (93.7%) at an average age of 33.4 +/- 11.2 years (mean +/- SD). Only 49 (34.3%) patients wore a helmet at the time of a collision. Helmet use at the time of a collision significantly reduced the severity of head injuries (28.6% vs 46.8%, P = 0.028) and the likelihood of sustaining intra-cranial lesions (26.5% vs 44.7%, P = 0.03) from head injuries.</p> <p>Conclusion</p> <p>Wearing a helmet at the time of a motorcycle collision reduces the severity of head injuries. However, the prevalence of helmet use at the time of a collision is unacceptably low.</p

Miradas y voces de la Investigación Educativa III : Formación y desarrollo profesional docente. Innovación Educativa con miras a la justicia social. Aportes desde la Investigación Educativa

Fil: Ferreyra, Horacio Ademar. Universidad Católica de Córdoba. Facultad de Educación; ArgentinaFil: Sañudo Guerra, Lya. Universidad Católica de Córdoba. Facultad de Educación; Argentin

Novel regulation of Ras proteins by direct tyrosine phosphorylation and dephosphorylation

Somatic mutations in the RAS genes are frequent in human tumors, especially in pancreatic, colorectal, and non-small-cell lung cancers. Such mutations generally decrease the ability of Ras to hydrolyze GTP, maintaining the protein in a constitutively active GTP-bound form that drives uncontrolled cell proliferation. Efforts to develop drugs that target Ras oncoproteins have been unsuccessful. Recent emerging data suggest that Ras regulation is more complex than the scientific community has believed for decades. In this review, we summarize advances in the "textbook" view of Ras activation. We also discuss a novel type of Ras regulation that involves direct phosphorylation and dephosphorylation of Ras tyrosine residues. The discovery that pharmacological inhibition of the tyrosine phosphoprotein phosphatase SHP2 maintains mutant Ras in an inactive state suggests that SHP2 could be a novel drug target for the treatment of Ras-driven human cancers

Descriptive Epidemiology of Cases of Acute Myocardial Infarction in Tobago: " Epidemiología Descriptiva de Casos de Infarto Agudo del Miocardio en Tobago"

Objectives: The goal of this study is to identify co-morbidities associated with acute myocardial infarction in Tobago. Methods: This was a longitudinal retrospective study of myocardial infarction at the Tobago Regional Hospital in two selected periods: January 2007 to April 2007 and January 2008 to April 2008. Data were retrieved from the patients’ medical records. These included co-morbid conditions eg hypertension, diabetes mellitus, dyslipidaemia, ESRD, whether history of smoking or cocaine use and if any prior care. In the former period, 11 cases were confirmed as having myocardial infarction and 27 cases in the latter period. Results: In 2007 and 2008, all cases had dyslipidaemia (LDL > 100 mg/dL) and were hypertensive. There were 36.4% of cases in 2007 that had diabetes mellitus, compared to 33.3% cases in 2008 and 9.1% had chronic kidney disease in 2007, compared to 25.9% in 2008. Conclusion: The most common co-morbidities associated with acute myocardial infarction in Tobago are dyslipidaemia, hypertension and diabetes mellitus, with ESRD, smoking and cocaine use less so. Many of these patients had never received prior care. RESUMEN Objetivos: El objeto de este estudio fue identificar las comorbilidades asociadas con el infarto agudo del miocardio en Tobago. Metódos: Se realizó un estudio retrospectivo longitudinal del infarto del miocardio en el Hospital Regional de Tobago, en dos períodos: enero de 2007 a abril de 2007, y enero de 2008 a abril de 2008. Los datos fueron obtenidos a partir de las historias clínicas de los pacientes. Estos datos incluyeron condiciones co-mórbidas, por ejemplo, hipertensión, diabetes mellitus, dislipidemia, ERFT, historia de hábito de fumar o uso de cocaína, y cualquier atención previa del caso, si la hubiese. En el primero de estos períodos, se confirmó que 11 casos tenían infarto del miocardio, en tanto en el último caso se confirmaron 27 casos. Resultados: En 2007 y 2008, todos los casos padecían de dislipidemia (LDL > 100 mg/dL) y eran hipertensos. El 36.4% de los casos en 2007 sufría de diabetes mellitus, en comparación con el 33.3% de los casos en 2008. El 9.1% tenía la enfermedad renal crónica en 2007, en comparación con el 25.9% en 2008. Conclusión: Las comorbilidades más comunes asociadas con el infarto agudo del miocardio en Tobago son la dislipidemia, la hipertensión y la diabetes mellitus, y en menor grado la ERET, el hábito de fumar, y el consumo de cocaína. Muchos de estos pacientes no habían recibido nunca atención con anterioridad