Delayed neurological syndrome following carbon monoxide poisoning
*Correspondencia: Dr. Manuel J. Vázquez Lima. Servicio de Urgencias. Hospital do Salnés. Rúa Hospital, s/n. E-36619 Vilagarcía de Arousa (Pontevedra).
E-mail: tvazlim@gmail.com
Introduction: Poisoning by carbon monoxide is the most frequent form of intoxication in our milieu as a result of exposure to poisonous gases. The effects of carbon monoxide poisoning are not limited to acute exposure, since, following apparent recovery from the acute intoxication, neurological or behavioural disorders may appear.
Patients and methods: A study was conducted to examine the cases of carbon monoxide poisoning that had occurred in a healthcare area of 80,000 inhabitants over a 10-year period. These patients were then submitted to a follow-up to appraise the appearance of delayed neurological syndrome (DNS) and its relationship with different variables in the initial exposure to the carbon monoxide, in the treatment that was administered or in the severity of the intoxication.
Results and conclusions: It was observed that around 9.1% of those intoxicated by carbon dioxide detected within the healthcare district of Salnés went on to develop DNS, which is more frequent in patients with severe analytical criteria and very unlikely in those who do not have them. Patients with DNS did not express any clinical or analytical manifestations that differed from those who did not have the syndrome; no differences were observed in relation to the oxygen therapy that was administered. The rate of DNS within the healthcare district of Salnés between 2002 and 2012 is 0.84 cases per 100,000 inhabitants per year.
Pacientes y métodos Se realizó un estudio de las intoxicaciones por monóxido de carbono en un área sanitaria de 80.000 habitantes durante un período de 10 años. Posteriormente se hizo un seguimiento de estos pacientes y se valoró la aparición de síndrome neurológico tardío (SNT) y su relación con diferentes variables en la exposición inicial al monóxido de carbono, en el tratamiento administrado o en la gravedad de la intoxicación. Resultados y conclusiones. Se observó que el 9,1% de los intoxicados por monóxido de carbono detectados en el área sanitaria de Salnés desarrollan el SNT, que es más frecuente en los pacientes con criterios analíticos de gravedad y muy poco probable en los que no los tienen. Los pacientes con SNT no expresaron manifestaciones clínicas ni analíticas diferentes a los que no presentaron el síndrome; tampoco se observaron diferencias en relación con la terapia con oxígeno administrada. La tasa de SNT en el área sanitaria de Salnés entre 2002 y 2012 es de 0,84 casos por 100.000 habitantes y año.