Resistencia a los anestésicos locales: ¿verdad o mito? / Resistance to local anesthetics: Truth or myth?

Es esencial reportar el fracaso de la técnica anestésica, y debe determinarse por tanto la etiología del problema. Describimos un caso de fracaso de la anestesia locorregional en el que, tras excluir sus causas más comunes, se consideró la resistencia a los anestésicos locales como la hipótesis clínica más probable. Por tal motivo, se realizó una prueba genética, y también se evaluó la eficacia de otros anestésicos locales, lo cual constituyó un enfoque diferente en los casos de fracaso de la anestesia locorregional. La resistencia real a los anestésicos locales es difícil de diagnosticar, por lo que la información acerca de ello en la literatura es escasa. Una de las causas propuestas es que se produce una mutación en los canales del sodio, en los que se unen los anestésicos locales. De no reconocerse, la aplicación de anestesia locorregional en la situación de estos pacientes puede causar experiencias desagradables y riesgos innecesarios, relacionados con los niveles tóxicos de anestésicos locales. Por tal motivo, deberá descartarse siempre la resistencia a los anestésicos locales en casos de fuerte sospecha clínica, pudiendo aplicarse este enfoque en casos similares.(AU)

The report of anesthetic technique failure is crucial and the etiology of the problem should be determined. We describe a case of locoregional anesthesia failure, in which, after excluding its most common causes, the resistance to local anesthetics was considered as the most probable clinical hypothesis. For this reason, a genetic test was performed, as well as the efficacy of other local anesthetics was evaluated, constituting a different approach in the cases of locoregional anesthesia failure. True resistance to local anesthetics is difficult to diagnose so information about this is scarce in the literature. One of the proposed causes is a mutation of sodium channels where local anesthetics bind. If not recognized, the application of locorregional anesthesia in this patient's condition can lead to unpleasant experiences and unnecessary risks, related to toxic levels of local anesthetics. For this reason, the resistance to local anesthetics should be always precluded in cases of strong clinical suspicion. This approach could be applied in similar cases.(AU)

Resistance to local anesthetics: Truth or myth?

The report of anesthetic technique failure is crucial and the etiology of the problem should be determined. We describe a case of locoregional anesthesia failure, in which, after excluding its most common causes, the resistance to local anesthetics was considered as the most probable clinical hypothesis. For this reason, a genetic test was performed, as well as the efficacy of other local anesthetics was evaluated, constituting a different approach in the cases of locoregional anesthesia failure. True resistance to local anesthetics is difficult to diagnose so information about this is scarce in the literature. One of the proposed causes is a mutation of sodium channels where local anesthetics bind. If not recognized, the application of locorregional anesthesia in this patient's condition can lead to unpleasant experiences and unnecessary risks, related to toxic levels of local anesthetics. For this reason, the resistance to local anesthetics should be always precluded in cases of strong clinical suspicion. This approach could be applied in similar cases.

Randomized Clinical Trial Comparing Quadratus Lumborum Block and Intrathecal Morphine for Postcesarean Analgesia / Ensaio Clínico Randomizado Comparando Bloqueio do Quadrado Lombar e Morfina Intratecal Para Analgesia Pós-cesariana

Abstract Objective To compare the efficacy of quadratus lumborum (QL) block and intrathecal morphine (M) for postcesarean delivery analgesia. Methods Thirty-one pregnant women with ≥ 37 weeks of gestation submitted to elective cesarean section were included in the study. They were randomly allocated to either the QL group (12.5 mg 0.5% bupivacaine for spinal anesthesia and 0.3 ml/kg 0.2% bupivacaine for QL block) or the M group (12.5 mg bupivacaine 0.5% and 100 mcg of morphine in spinal anesthesia). The visual analog scale of pain, consumption of morphine and tramadol for pain relief in 48 hours, and side effects were recorded. Results Median pain score and/or pain variation were higher in the morphine group than in the QL group (p = 0.02). There was no significant difference in the consumption of morphine or tramadol between groups over time. Side effects such as pruritus, nausea, and vomiting were observed only in the morphine group. Conclusion Quadratus lumborum block and intrathecal morphine are effective for analgesia after cesarean section. Patients undergoing QL block had lower postoperative pain scores without the undesirable side effects of opioids such as nausea, vomiting, and pruritus.

Resumo Objetivo Comparar a eficácia do bloqueio do quadrado lombar (QL) e da morfina intratecal (M) na analgesia pós-cesariana. Métodos Trinta e uma gestantes com ≥ 37 semanas de gestação submetidas a cesariana eletiva foram incluídas no estudo. Eles foram alocados aleatoriamente no grupo QL (12,5 mg de bupivacaína a 0,5% para raquianestesia e 0,3 ml/kg de bupivacaína a 0,2% para bloqueio de QL) ou no grupo M (12,5 mg de bupivacaína a 0,5% e 100 mcg de morfina na raquianestesia). A escala visual analógica de dor, consumo de morfina e tramadol para alívio da dor em 48 horas e efeitos colaterais foram registrados. Resultados A mediana do escore de dor e/ou variação da dor foi maior no grupo morfina do que no grupo QL (p = 0,02). Não houve diferença significativa no consumo de morfina ou tramadol entre os grupos ao longo do tempo. Efeitos colaterais como prurido, náuseas e vômitos foram observados apenas no grupo morfina. Conclusão O bloqueio QL e a morfina intratecal são eficazes para analgesia após cesariana. Os pacientes submetidos ao bloqueio do QL apresentaram menores escores de dor pós-operatória sem os efeitos colaterais indesejáveis dos opioides, como náuseas, vômitos e prurido.

Anesthesia and breastfeeding / Lactancia materna y anestesia

Abstract The importance of breastfeeding with its positive impact on the wellbeing of the mother-infant pair is well established. Anesthesiologists should encourage the promotion of lactation by being willing to give reassurance during the preoperative period and preparing a plan that does not interfere with safe breastfeeding. There is concern regarding the transfer of drugs into breast milk, which may lead to inconsistent advice from many health professionals and to early discontinuation. However, evidence shows that most anesthetic drugs are safe in terms of transfer into breast milk, and hence, compatible with breastfeeding, which should be resumed after anesthesia as soon as the mother is alert and feels well enough to hold her infant, without the need to "pump and dump". This review provides pharmacokinetic information on commonly used anesthesia drugs and their passage into breast milk, to help practitioners discuss risks and benefits with the mother, emphasizing that anesthesia should not interfere with the benefits of breastfeeding. Four practical clinical scenarios are presented: pregnant women concerned about the effect of epidural analgesia on subsequent breastfeeding, spinal anesthesia for c-section and lactation, patients who will receive general anesthesia during cesarean section, and finally women who are breastfeeding and require anesthesia for elective or urgent surgery. Neuraxial anesthesia allows for better pain control and immediate skin-to-skin contact at the time of childbirth. Also, it interferes the least with the woman's ability to care for her infant. Regional techniques, opioid-sparing techniques and outpatient surgery are preferred. Drugs such as opioids and longer-acting benzodiazepines should be administered cautiously, particularly in repeat doses.

Resumen La lactancia materna tiene evidentes beneficios para el binomio maternofetal. El anestesiólogo debe ser un agente en la promoción de la lactancia, estar dispuesto a resolver dudas en el preoperatorio y elaborar un plan que no interfiera con su seguridad. Hay preocupación referente a la transferencia de los medicamentos (endovenosos y/o neuroaxiales) hacia la leche, que puede conducir a un consejo inconsistente de muchos profesionales de la salud, lo cual contribuye a la suspensión temprana de la lactancia materna. Sin embargo, existe evidencia de que la mayoría de los medicamentos que se utilizan en la anestesia (general y neuroaxial) son compatibles con la lactancia materna. Se debe iniciar la lactancia materna después de la anestesia tan pronto como la madre esté alerta y se sienta bien, sin necesidad de extraerla y eliminarla. Esta revisión entrega información farmacocinética sobre los medicamentos y técnicas anestésicas comúnmente utilizadas para que los profesionales realicen un balance riesgo-beneficio con la madre, enfatizando que la anestesia no debe interferir con los beneficios de la lactancia. Se presentan cuatro escenarios clínicos prácticos: embarazada preocupada por el efecto de la analgesia peridural en su lactancia posterior, anestesia raquídea para cesárea y efecto en lactancia, pacientes que requieren anestesia general para cesárea y, por último, paciente puérpera que requiere anestesia para cirugía. Las técnicas neuroaxiales permiten un mejor control del dolor y contacto piel con piel precoz en el parto vaginal o cesárea, lo que facilita que la madre inicie la lactancia más rápido. Si el escenario lo permite, se prefieren técnicas regionales, técnicas ahorradoras de opioides y cirugía ambulatoria, teniendo precaución con ciertos opioides y benzodiacepinas de acción larga especialmente ante dosis repetidas.

Trombosis venosa profunda masiva en gestante: la importancia de individualizar el plan de acción / Massive deep vein thrombosis in pregnant women: The importance of individualizing the action plan

El tromboembolismo venoso (TEV), incluida la trombosis venosa profunda (TVP) y la embolia pulmonar (TEP) es una afección potencialmente letal y a tener en cuenta en mujeres embarazadas, donde la situación es favorecida por los cambios fisiológicos característicos de la gestación, el parto y el puerperio. El manejo de esta patología en este tipo de pacientes está basado en la anticoagulación, con los beneficios e inconvenientes que ello implica. Presentamos el caso de una mujer embarazada con TVP masiva e intentamos arrojar luz sobre temas como son la vía de parto (vaginal vs. cesárea) o el manejo del tratamiento (heparina de bajo peso molecular [HBPM] vs. heparina no fraccionada [HNF]) de cara a obtener la situación más segura para la paciente.(AU)

Venous thromboembolism (VTE), including deep vein thrombosis (DVT) and pulmonary embolism (PE), is a potentially lethal condition to be taken into account in pregnant women, where the situation is favored by the characteristic physiological changes of the pregnancy, childbirth and the puerperium. The management of this pathology in this type of patient is based on anticoagulation, with the benefits and drawbacks that this implies. We present the case of a pregnant woman with massive DVT and the issues are discussed, such as the method of delivery (vaginal vs. cesarean section) or the management of treatment (LMWH vs. UFH) in order to obtain the safest situation for the patient.(AU)

Massive deep vein thrombosis in pregnant women: The importance of individualizing the action plan.

Venous thromboembolism (VTE), including deep vein thrombosis (DVT) and pulmonary embolism (PE), is a potentially lethal condition to be taken into account in pregnant women, where the situation is favored by the characteristic physiological changes of the pregnancy, childbirth and the puerperium. The management of this pathology in this type of patient is based on anticoagulation, with the benefits and drawbacks that this implies. We present the case of a pregnant woman with massive DVT and the issues are discussed, such as the method of delivery (vaginal vs. cesarean section) or the management of treatment (LMWH vs. UFH) in order to obtain the safest situation for the patient.

Deambulación precoz e incidencia de cefalea pospunción dural en paciente obstétrica propuesta para cesárea electiva / Early ambulation and incidence of postdural puncture headache in an obstetric patient proposed for elective cesarean section

Introducción: La cefalea pospunción dural es la complicación más habitual tras la anestesia neuroaxial, y es especialmente frecuente en obstetricia, un hallazgo común en el período posparto. Suele ser una complicación benigna y autolimitada, pero sin tratamiento puede conducir a otras complicaciones más graves. Objetivo: Describir la incidencia de cefalea pospunción dural en las pacientes obstétricas programadas para cesárea electiva con anestesia espinal y su relación con la deambulación precoz. Métodos: Se realizó un estudio observacional descriptivo en una serie de casos (50), todas las pacientes propuestas para cesárea electiva bajo el método anestésico espinal subaracnoideo con trocar calibre 25 en el período comprendido entre mayo a diciembre del 2018. Resultados: De un total de 50 pacientes estudiadas con edades entre 18 y 35 años de edad, al 96 por ciento se le realizó punción única de la duramadre, en todas se utilizó trócar 25, atraumático y ninguna presentó cefalea pospunción dural. Conclusiones: Se concluye que la incidencia de cefalea pospunción dural puede disminuir cuando se utilizan agujas espinales atraumáticas, de pequeño calibre; lo cual facilita también la deambulación temprana de la paciente(AU)

Introduction: Postdural puncture headache is the most common complication following neuraxial anesthesia, and is especially common in obstetrics, a common finding in the postpartum period. It is usually a benign and self-limited complication, but if not treated, it can lead to further serious complications. Objective: To describe the incidence of postdural puncture headache in obstetric patients scheduled for elective cesarean section with spinal anesthesia and its relationship with early ambulation. Methods: A descriptive observational study was carried out in a case series (50) of patients proposed for elective cesarean section under the subarachnoid spinal anesthesia method with 25-gauge trocar in the period from May to December 2018. Results: Out of a total of 50 patients aged 18-35 years who participated in the study, 96 percent underwent single dura mater puncture. In all cases, a 25-gauge trocar was used and none presented postdural puncture headache. Conclusions: The incidence of postdural puncture headache may be concluded to decrease when atraumatic spinal needles of small caliber are used, which also facilitates early ambulation of the patient(AU)

Anaesthesia in a parturient with systemic mastocytosis.

Mastocytosis is characterized by clonal expansion of mast cells, with abnormal accumulation in different organs. Perioperatively, numerous stimuli may lead to the release of vasoactive substances by mast cells. Parturients with systemic mastocytosis pose a challenge to the anesthesiologist: on one hand, the pain and stress of labor may lead to greater mast cell activation and, on the other, the administration of drugs that may possibly trigger the release of mast cell mediators. The authors describe a case of a 34-year-old pregnant woman with systemic mastocytosis who requests labor analgesia. An epidural analgesia was performed after induction of labor, after considering anesthetic particularities. The epidural procedure, labor and delivery were uneventful. A review of systemic mastocytosis is provided and its anesthetic considerations are discussed.

Consideraciones anestésicas en una parturienta con mastocitosis sistémica / Anesthetic considerations in a laboring woman with systemic mastocytosis

La mastocitosis se caracteriza por la expansión clónica de mastocitos, con acumulación anormal en diferentes órganos. Perioperatoriamente, numerosos estímulos pueden originar la liberación de sustancias vasoactivas por parte de los mastocitos. Las parturientas con mastocitosis sistémica plantean una dificultad al anestesiólogo: por un lado, el dolor y el estrés del parto pueden causar una mayor activación de los mastocitos y, por otro, la administración de fármacos puede desencadenar posiblemente la liberación de mediadores de los mastocitos. Los autores describen un caso de una embarazada de 34 años de edad con mastocitosis sistémica que solicita analgesia para el parto. Se realizó analgesia epidural tras la inducción del parto, una vez consideradas las particularidades anestésicas. El procedimiento epidural, el parto y la expulsión transcurrieron sin incidentes. Se aporta una revisión de la mastocitosis sistémica y se abordan sus consideraciones anestésicas.(AU)

Mastocytosis is characterized by clonal expansion of mast cells, with abnormal accumulation in different organs. Perioperatively, numerous stimuli may lead to the release of vasoactive substances by mast cells. Parturients with systemic mastocytosis pose a challenge to the anesthesiologist: on one hand, the pain and stress of labor may lead to greater mast cell activation and, on the other, the administration of drugs that may possibly trigger the release of mast cell mediators. The authors describe a case of a 34-year-old pregnant woman with systemic mastocytosis who requests labor analgesia. An epidural analgesia was performed after induction of labor, after considering anesthetic particularities. The epidural procedure, labor and delivery were uneventful. A review of systemic mastocytosis is provided and its anesthetic considerations are discussed.(AU)

Anestesia obstetrica en gastante con cardiopatía acianogea / Obstetric anesthesia in a pregnat with acianogue congenital heart disease

En el embarazo la enfermedad cardiaca congénita materna tiene una alta incidencia de morbilidad y mortalidad y los cambios fisiológicos que se presentan durante el embarazo pueden poner en evidencia las enfermedades cardiovasculares existentes previas a la gestación o cursar con complicaciones secundarias a estas enfermedades. En la mayoría de las mujeres que poseen una condición de cardiopatía y embarazo, el manejo anestésico de la gestante tiene influencia en la evolución del pronóstico a corto y a largo plazo, por lo cual se sugiere debe ser individualizado y ejecutado por un equipo multidisciplinario para planear la interrupción de la gestación en el momento más conveniente para el binomio madre hijo.

Anesthetic management of a parturient with Marfan syndrome scheduled for cesarean section: case report and review of literature / Manejo anestésico de una parturienta con síndrome de Marfan programada para cesárea: informe de un caso y revisión de la literatura

Abstract: Introduction: Marfan syndrome is an inherited disorder that affects connective tissue. Case: We report the anesthetic management of a parturient with Marfan syndrome scheduled for an elective C-section. Successful use of a combined spinal-epidural technique was used to provide neuraxial anesthesia; however, she presented an unfavorable evolution due to maternal sepsis. Likewise, a literature review of combined spinal-epidural anesthesia for C-sections in Marfan syndrome pregnant women was performed. Conclusion: Anesthetic management of parturients affected by Marfan syndrome during the cesarean section can be challenging. Strict blood pressure control during the intraoperative period has cornerstone importance. Likewise, neuraxial techniques have a significant percentage of failure in these patients.

Resumen: Introducción: El síndrome de Marfan es un desorden hereditario que afecta el tejido conectivo. Caso: Reportamos el manejo anestésico de una parturienta con síndrome de Marfan programada para una cesárea electiva. Para administrar anestesia neuroaxial se utilizó un bloqueo combinado espinal-epidural; sin embargo, la paciente presentó una evolución desfavorable debido a sepsis materna. Asimismo, se realizó una revisión de la literatura del uso de esta técnica anestésica para cesárea en gestantes con síndrome de Marfan. Conclusión: El manejo anestésico de parturientas afectadas por este síndrome puede ser complicado. El control estricto de la presión arterial durante el intraoperatorio tiene importancia fundamental. Además, las técnicas neuroaxiales tienen un porcentaje significativo de fallo en estas pacientes.

Anesthetic considerations in a laboring woman with systemic mastocytosis. / Consideraciones anestésicas en una parturienta con mastocitosis sistémica.

Mastocytosis is characterized by clonal expansion of mast cells, with abnormal accumulation in different organs. Perioperatively, numerous stimuli may lead to the release of vasoactive substances by mast cells. Parturients with systemic mastocytosis pose a challenge to the anesthesiologist: on one hand, the pain and stress of labor may lead to greater mast cell activation and, on the other, the administration of drugs that may possibly trigger the release of mast cell mediators. The authors describe a case of a 34-year-old pregnant woman with systemic mastocytosis who requests labor analgesia. An epidural analgesia was performed after induction of labor, after considering anesthetic particularities. The epidural procedure, labor and delivery were uneventful. A review of systemic mastocytosis is provided and its anesthetic considerations are discussed.

Manejo anestésico en paciente obstétrica con taponamiento cardíaco / Anesthetic management in obstetric patient with cardiac tamponade

El taponamiento cardiaco es la acumulación de líquido dentro del saco pericárdico, lo que conlleva a un aumento de la presión intrapericardica, permitiendo el deterioro de la capacidad del corazón para llenarse y actuar como bomba. Entre sus causas tenemos a la tuberculosis, las colagenopatías, y el cáncer. En el embarazo se pueden enmascarar los signos y síntomas del taponamiento cardiaco por los cambios fisiológicos propios del embarazo. El Gold estándar para su detección es la ecocardiografía. El tratamiento del taponamiento cardiaco es la pericardiocentesis o el drenaje quirúrgico. Se presenta el caso de una paciente de 26 años con: embarazo de 32,6 semanas, trabajo de parto pretérmino, taponamiento cardiaco y post pericardiocentesis de 2 horas, para culminación de embarazo. El manejo anestésico es complejo tanto para la madre y el recién nacido, basándose en mantener estabilidad hemodinámica y posterior traslado a unidad de terapia intensiva.

Cardiac tamponade is the accumulation of fluid within the pericardial sac, which leads to an increase in intrapericardial pressure, allowing the deterioration of the heart's ability to fill and act as a pump. Among its causes are tuberculosis, collagen disease, and cancer. In pregnancy, the signs and symptoms of cardiac tamponade can be masked by the physiological changes of pregnancy. The gold standard of detection is echocardiography. Treatment of cardiac tamponade is pericardiocentesis or surgical. The case of a 26-year-old patient is presented with: a 32.6 for week pregnancy in preterm labor, cardiac tamponade and 2-hour post-pericardiocentesis, for culminate of pregnancy. Anesthetic management is complex for both the mother and the newborn, basing on maintaining hemodynamic stability and subsequent transfer to the intensive care unit.

Variación de la baricidad en la mezcla de anestesia espinal para cesárea, ¿tiene algún efecto en la calidad anestésica? Estudio aleatorizado, doble ciego, controlado / Baricity variation in a spinal anaesthesia mixture for caesarean section. Does it have any effect on anaesthetic quality? A randomised, double blind, controlled study

Introducción: El presente estudio se realizó con la finalidad de comparar la efectividad anestésica de bupivacaína-fentanilo a diferentes concentraciones de dextrosa por vía subaracnoidea para cesárea segmentaria. Métodos: Estudio doble ciego, aleatorio simple. Se incluyeron 60 pacientes, con edades comprendidas entre 18 y 40 años, ASA I-II, para cesárea segmentaria Clase 3 o 4, divididas en tres grupos, definidos como Grupos A, B y C, correspondientes a dextrosa 2, 4 y 6% respectivamente, con bupivacaína 6,25 mg más fentanilo 25 μg. Se cuantificaron características demográficas, episodios de hipotensión y bradicardia, inicio y duración del bloqueo sensitivo y motor, satisfacción de la madre y el cirujano, eventos adversos, así como el efecto de la anestesia sobre el feto y el neonato. Una p < 0,05 fue considerada estadísticamente significativa. Resultados: No hubo diferencias significativas en los datos demográficos, las tres soluciones con dextrosa fueron suficientes para proporcionar nivel y tiempo quirúrgico, desde el punto de vista estadístico. Los eventos de hipotensión materna fueron menores en el Grupo C (p < 0,05). Sólo cinco casos fueron compatibles con asfixia neonatal, sin embargo, los valores de Apgar fueron mayores de siete puntos, con evolución posnatal satisfactoria en todos los casos. Conclusiones: Las tres mezclas de bupivacaína-fentanilo por vía subaracnoidea son clínicamente efectivas, sin embargo, a mayor concentración de dextrosa empleada, se obtiene mejor bloqueo diferencial.(AU)

Introduction: This study was conducted to compare the effectiveness subarachnoid anaesthesia with bupivacaine plus fentanyl at different concentrations of dextrose for caesarean section. Methods: A double-blind, randomised study, which included 60 patients, aged between 18 and 40 years, ASA I-II for caesarean section class 3 or 4, divided into 3 groups, designated A, B, and C corresponding to dextrose 2, 4 and 6%, respectively, bupivacaine 6.25 mg plus fentanyl 25 μg. Demographic characteristics were quantified, episodes of hypotension and bradycardia onset and duration of sensory block and motor block, surgeon and maternal satisfaction, adverse events and the effect of anaesthesia on the foetus and neonate. A p < .05 was considered statistically significant. Results: There was no difference in the demographic data, the three-anaesthetic mixture with dextrose were sufficient to provide level and duration of anesthesia for surgery. Maternal hypotension events were lower in group C (p < 0.05), the same group had lower external malleolus deep sensitivity (p < 0.05), only 5 cases were consistent with neonatal asphyxia, however the Apgar scores values were greater than 7 points, with satisfactory development. Conclusions: The three anaesthetic mixtures for subarachnoid anaesthesia with bupivacaine-fentanyl are clinically effective; however, the greater the amount of dextrose used the better block quality.(AU)

Revisión de evidencia del impacto de la anestesia obstétrica en los desenlaces maternos y neonatales. Un análisis de la literatura / Review of evidence of the impact of obstetric anesthesia on maternal and neonatal outcomes. An analysis of the literature

We present the analysis and comments of a review of evidence of the impact of obstetric anesthesia on maternal and neonatal outcomes, based on an article previously published by Lim et al.[1]. The advances in obstetric anesthesia on analgesia and anesthesia for labor and delivery, anesthesia for cesarean section and outcomes in obstetric anesthesia.

Se presenta el análisis y comentarios de una revisión de evidencia del impacto de la anestesia obstétrica en los desenlaces maternos y neonatales, basado en un artículo previamente publicado por Lim y cols.[1]. Se analizan los avances en la anestesiología obstétrica sobre analgesia y anestesia para el parto, anestesia para cesárea y desenlaces en anestesia obstétrica.

Practical recommendations in the obstetrical patient with a COVID-19 infection. / Recomendaciones prácticas en la paciente obstétrica con infección por COVID-19.

COVID-19 infection also affects obstetric patients. Regular obstetric care has continued despite the pandemic. Case series of obstetric patients have been published. Neuroaxial techniques appear to be safe and it is important to obtain the highest possible rate of success of the blocks before a cesarean section. For this reason, it is recommended that the blocks be carried out by senior anesthesiologists. The protection and safety of professionals is a key point and in case of general anesthesia, so it is also recommended to call to the most expert anesthesiologist. Seriously ill patients should be recognized quickly and early, in order to provide them with the appropriate treatment as soon as possible. Susceptibility to thrombosis makes prophylactic anticoagulation a priority.

[Anesthesia for a cesarean section on a pregnant patient with Cockayne syndrome: case report]. / Anestesia para cesárea em gestante com síndrome de Cockayne: relato de caso.

Cockayne syndrome is an autosomal recessive multi-systemic disorder due to DNA repair failure. It was originally described in 1936 in children of small stature, retinal atrophy and deafness, characterized by dwarfism, cachexia, photosensitivity, premature aging and neurologic deficits. The most typical feature is described as birdlike facies: protruding maxilla, facial lipoatrophy, sunken eyes, large ears and thin nose. Difficult airway management with subglottic stenosis and risk of gastric content aspiration has been described. Although the clinical characteristics of Cockayne syndrome have been well described in pediatric publications, there is only one report in the literature on anesthesia for an obstetric patient. We report the case of a pregnant patient diagnosed with Cockayne syndrome, submitted successfully to spinal anesthesia for a cesarean section due to cephalopelvic disproportion. In view of the difficult decision between inducing general anesthesia in a patient with a likely difficult airway, or neuraxial anesthesia in a patient with cardiovascular, respiratory and neurocognitive limitations, we suggest tailored management to reach the best results for the mother and newborn.

Anesthesia for a cesarean section on a pregnant patient with Cockayne syndrome: case report / Anestesia para cesárea em gestante com síndrome de Cockayne: relato de caso

Abstract Cockayne syndrome is an autosomal recessive multi-systemic disorder due to DNA repair failure. It was originally described in 1936 in children of small stature, retinal atrophy and deafness, characterized by dwarfism, cachexia, photosensitivity, premature aging and neurologic deficits. The most typical feature is described as birdlike facies: protruding maxilla, facial lipoatrophy, sunken eyes, large ears and thin nose. Difficult airway management with subglottic stenosis and risk of gastric content aspiration has been described. Although the clinical characteristics of Cockayne syndrome have been well described in pediatric publications, there is only one report in the literature on anesthesia for an obstetric patient. We report the case of a pregnant patient diagnosed with Cockayne syndrome, submitted successfully to spinal anesthesia for a cesarean section due to cephalopelvic disproportion. In view of the difficult decision between inducing general anesthesia in a patient with a likely difficult airway, or neuraxial anesthesia in a patient with cardiovascular, respiratory and neurocognitive limitations, we suggest tailored management to reach the best results for the mother and newborn.

Resumo A síndrome de Cockayne é doença multissistêmica autossômica recessiva devido à falha no reparo do DNA. Originalmente descrita em 1936 em crianças com baixa estatura, atrofia retiniana e surdez, é caracterizada por nanismo, caquexia, fotossensibilidade, envelhecimento acelerado e déficits neurológicos. O mais típico é a fácies, descrita como similar à de um pássaro: maxila proeminente, atrofia do coxim adiposo bucal, olhos profundos, orelhas grandes e nariz fino. Tem sido descrita dificuldade no manejo da via aérea com estreitamento subglótico e risco de aspiração gástrica. Embora as características clínicas da síndrome de Cockayne sejam bem relatadas em publicações pediátricas, há apenas um relato de anestesia em paciente obstétrica na literatura. Relatamos o caso de gestante com diagnóstico de síndrome de Cockayne, submetida com sucesso a raquianestesia para parto cesariano por desproporção cefalopélvica. Diante da difícil decisão entre induzir anestesia geral em paciente com provável via aérea difícil ou anestesia neuroaxial, em meio a limitações cardiovasculares, respiratórias e neurocognitivas da paciente, conduta individualizada é sugerida para alcançar os melhores resultados para a gestante e o neonato.

Efecto de la dexmedetomidina y morfina intratecal como coadyuvantes en anestesia obstétrica / Effect of intrathecal dexmedetomidine and morphine as adjuvants in obstetric anesthesia

El uso de coadyuvantes en anestesia obstétrica es útil para disminuir la dosis de los anestésicos locales. En boga la adición de un nuevo fármaco como es la dexmedetomidina espinal que abarca de 5 µg a 10 µg en el reporte mundial. OBJETIVOS: comparar el efecto de la administración espinal de la dexmedetomidina y morfina, más bupivacaina pesada en pacientes sometidas a cesárea. MÉTODOS: ensayo clínico, doble ciego y prospectivo de 99 pacientes randomizados en 3 grupos: grupo D2 (fentanilo 10 µg, bupivacaina 9 mg y dexmedetomidina 2 µg); grupo D3 (fentanilo 10 µg, bupivacaina 9 mg y dexmedetomidina 3 µg) y grupo M (fentanilo 10 µg, bupivacaina 9 mg y morfina 100 µg). Evaluación de parámetros hemodinámicos, duración de bloqueo motor, necesidad de vasopresores y complicaciones. Análisis estadístico: ANOVA para variables cuantitativas, para variables nominales se empleó chi cuadrado. Valor de p <0.05 es significativo. RESULTADOS: la duración más prolongada del bloqueo motor fue en el grupo D2 (140,3 ± 30,7minutos), seguido del grupo de D3 (142,4 ± 16 minutos) y el grupo M (107 ± 14,6). En los grupos con dexmedetomidina se tiene sedación y estabilidad hemodinámica, la necesidad de rescate fue en el grupo M; la cantidad de vasopresores que se utilizó fue de 1 ± 1,7 ml en el grupo D2; 1,8 ± 2,9 ml en el grupo D3 y 1,7 ± 2,1 ml en el grupo M. Hipotensión es la complicación más frecuente. CONCLUSIONES: dexmedetomidina 2 µg mejor estabilidad hemodinámica con prolongación del bloqueo motor y menor necesidad de vasopresores.

The use of adjuvants in obstetric anesthesia, useful to decrease the dose of local anesthetics. The addition of a new drug such as spinal dexmedetomidine ranging from 5 µg to 10 µg in the world report. OBJECTIVES: to compare the effect of spinal administration of dexmedetomidine and morphine plus hyperbaric bupivacaine in patients undergoing cesarean section. METHODS: prospective double-blind clinical trial, 99 randomized patients in 3 groups: group D2 (fentanyl 10 µg, bupivacaine 9 mg and dexmedetomidine 2 µg); group D3 (fentanyl 10 µg, bupivacaine 9 mg and dexmedetomidine 3 µg) and group M (fentanyl 10 µg, bupivacaine 9 mg and morphine 100 µg). Evaluation of hemodynamic parameters, duration of motor block, need for vasopressor and complications. Statistical analysis: ANOVA for quantitative variables. Chi-squared tes was used for nominal variables. P value <0.05 is significant. RESULTS: the duration of the longer Motor Block was in the D2 group (140.3 ± 30.7 minutes), followed by the D3 group (142.4 ± 16 minutes) and the M group of 107 ± 14.6; In the dexmedetomidine groups, it has sedation and hemodynamic stability. The need for rescue was in group M; the amount of vasopressor used was 1 ± 1.7 ml in group D2; 1.8 ± 2.9 ml in group D3 and 1.7 ± 2.1 ml group M. Hypotension is the most frequent complication. CONCLUSIONS: Dexmedetomidine 2 µg better hemodynamic stability with prolonged motor block and less need for vasopresor.

Eficacia de ketamina y meperidina para prevención de temblores en pacientes sometidas a cesárea bajo anestesia regional / Efficacy of ketamine and meperidine for the prevention of shivering in patients undergoing cesarean section under regional anesthesia

INTRODUCCION: en el postoperatorio de anestesia obstétrica, los temblores representan el 54%. Por lo cual, se pretende evitarlo en la sala de recuperación, usando medicamentos que regulen los temblores como ketamina y meperidina. OBJETIVOS: determinar la eficacia de la ketamina y meperidina para prevención de temblores en pacientes sometidas a cesárea bajo anestesia regional. METODOS: se realizó un ensayo clínico, simple ciego, aleatorizado y controlado. En el Hospital Obrero N° 2, Ingresaron en el estudio 40 pacientes cumpliendo criterios de inclusión, 20 pacientes por grupo. Las dosis usadas en el grupo Ketamina de 0.25 mg/kg y grupo meperidina de 0.1 mg/Kg. Se usó la escala de Crossley para determinar temblores, medición de temperatura periférica y efectos secundarios maternos y fetales. Para análisis estadístico se usó Chi x2 de Pearson. RESULTADOS: la edad media del estudio es 29,77±3,35 años; Tiempo quirúrgico media de 50 ± 8,8 minutos;Temperatura en quirófano más frecuente se encontraba entre 22° a 23° C; La temperatura periférica se encontró entre 36.6°C a 37.5 °C; en el grupo de meperidina se presentó más nauseas. No existen efectos secundarios en neonatos. CONCLUSIONES: Los temblores redujeron en los pacientes que recibieron ketamina mientras que en los que recibieron meperidina presentaron más nauseas como efecto secundario.

INTRODUCTION: The presence of shiviring in obstetric anesthesia in the postoperative period is up to 54%. Therefore, it is intended to avoid in the recovery room, using medications that regulate shiviring such as ketamine and meperidine. OBJECTIVES: to determine the efficacy of ketamine and meperidine for the prevention of shivering in patients undergoing cesarean section under regional anesthesia. METHODS: a single-blind, randomized, controlled clinical trial was conducted. In Hospital Obrero N ° 2, 40 patients enrolled in the study meeting inclusion criteria, 20 patients per group.The doses used in the Ketamine group of 0.25 mg / kg and meperidine group of 0.1 mg / Kg. The Crossley scale was used to determine shivering, peripheral temperature measurement and maternal and fetal side effects. For statistical analysis, Chi x2 from Pearson was used. RESULTS: the average age of the study is 29.77 ± 3.35 years; Average surgical time of 50 ± 8.8 minutes;Temperature in the most frequent operating room was between 22 ° to 23 ° C;The peripheral temperature was between 36.6 ºC to 37.5 ºC; in the meperidine group there was more nausea; No neonatal side effects. CONCLUSIONS: patients who received ketamine is better at preventing tremors while patients who received meperidine had more nausea as a side effect.