Malposición del tubo endotraqueal en paciente con traumatismo facial / Malposition of the endotracheal tube in patient with facial trauma

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Drug Challenge Tests With General Anesthetics: Predictive Value of Skin Tests.

BACKGROUND: The study of perioperative drug reactions remains a major challenge for both diagnosis and therapy. The lack of a standard assessment of allergy to general anesthetics and of data establishing the true value of skin tests for most drugs used in induction and maintenance of anesthesia, as well as the lack of commercially available reagents for in vitro tests, renders the study of these reactions problematic. The aims of this study were to provide a diagnostic protocol for drug challenge testing with general anesthetics, to establish an etiological diagnosis that is as specific as possible, and to determine the predictive value of skin tests. METHODS: Twenty-nine patients with perioperative drug reactions were included in the study from November 2008 to December 2018. RESULTS: We confirmed the high negative predictive value of the tests (96%-100%) in the case of propofol, rocuronium, and fentanyl. To our knowledge, this is the first study to describe drug challenge testing with general anesthetics and, therefore, to establish the true negative predictive value of skin tests, which leads to a definitive diagnosis and safer surgery. CONCLUSIONS: After assessing risks and benefits and considering the importance of this group of drugs, we conclude that drug challenge testing with general anesthetics is necessary. We propose a protocol for perioperative drug reactions that enables us to make a highly accurate etiological diagnosis with minimum risk for the patient.

Drug challenge tests with general anesthetics: predictive value of skin tests

BACKGROUND: The study of perioperative drug reactions remains a major challenge for both diagnosis and therapy. The lack of a standard assessment of allergy to general anesthetics and of data establishing the true value of skin tests for most drugs used in induction and maintenance of anesthesia, as well as the lack of commercially available reagents for in vitro tests, renders the study of these reactions problematic. The aims of this study were to provide a diagnostic protocol for drug challenge testing with general anesthetics, to establish an etiological diagnosis that is as specific as possible, and to determine the predictive value of skin tests. METHODS: Twenty-nine patients with perioperative drug reactions were included in the study from November 2008 to December 2018. RESULTS: We confirmed the high negative predictive value of the tests (96%-100%) in the case of propofol, rocuronium, and fentanyl. To our knowledge, this is the first study to describe drug challenge testing with general anesthetics and, therefore, to establish the true negative predictive value of skin tests, which leads to a definitive diagnosis and safer surgery. CONCLUSIONS: After assessing risks and benefits and considering the importance of this group of drugs, we conclude that drug challenge testing with general anesthetics is necessary. We propose a protocol for perioperative drug reactions that enables us to make a highly accurate etiological diagnosis with minimum risk for the patient

ANTECEDENTES: La ausencia de estandarización del estudio de alergia a anestésicos generales y ausencia de verdaderos datos sobre el valor de las pruebas cutáneas en la mayoría de los fármacos empleados en anestesia general, así como la ausencia de reactivos disponibles comercialmente para poder realizar tests in vitro, continúa suponiendo un dilema para estudiar las reacciones perianestésicas. El objetivo de este estudio fue aportar un protocolo de pruebas de provocación con anestésicos generales para poder establecer un diagnóstico etiológico lo mas especifico posible, y determinar el valor predictivo de las pruebas cutáneas. MÉTODOS: Desde noviembre de 2008 a diciembre de 2018, fueron estudiados 29 pacientes con reacciones perioperatorias a medicamentos. RESULTADOS: Con este estudio, confirmamos el alto valor predictivo negativo (VPN) de las pruebas cutáneas (96-100%) en el caso del propofol, rocuronio y fentanilo. En nuestro conocimiento, este es el primer trabajo que describe pruebas de provocación con anestésicos generales, y en aportar el verdadero VPN de las pruebas cutáneas, lo que permite llegar a un diagnóstico más definitivo, y a una mayor seguridad en futuras cirugías. CONCLUSIONES: Valorando riesgos /beneficios y considerando la importancia de este grupo de medicamentos, concluimos que las pruebas de provocación controlada con anestésicos generales, son necesarias. Proponemos un protocolo diagnóstico de las reacciones perioperatorias por fármacos, que permita alcanzar un diagnóstico etiológico lo más certero posible, con el menor riesgo para el paciente

[Two cases of postpartum pubis diastasis mistaken for neurological complications of epidural analgesia]. / Dos casos de diástasis de pubis postparto interpretados como complicación neurológica de la analgesia epidural.

Two healthy 31- and 34-year-old parturients received uncomplicated epidural analgesia for labor and delivery using standard techniques. Twenty-four and 12 hours postpartum, respectively, they developed severe lower back pain and difficulty moving their lower extremities. At first the symptoms were attributed to neurological complications of epidural analgesia and for this reason the anesthetist was called. Although both women appeared healthy and the neurological examinations were normal, emergency computed tomography scans were performed to rule out spinal compression because of the severity of pain and difficulty of movement. The diagnosis was only established after suspecting pubis diastasis, confirmed by palpation of symphysis gaps of 3 and 2 cm, respectively. Pelvic dysfunction associated with pregnancy and labour is a complication whose incidence varies from 1 in 300 to 1 in 30,000. It presents with severe pain located in the areas supplied by pudendal and genitofemoral nerves. The pain may radiate to the sacroiliac joints and shoot down the buttocks and legs. In the most severe cases it may be accompanied by urinary dysfunction and inability to walk. If the clinical features are not recognized, it can be difficult to differentiate pubis diastasis from severe neurological complications in women who have received a central nervous system block. We report two cases of peripartum pubis symphysis diastasis that were both initially mistaken for neurological complications of epidural analgesia for labor.