Réplica al artículo: "Comparación de bolus de fentanilo con perfusión de remifentanilo en el control de la respuesta hemodinámica a la laringoscopia e intubación orotraqueal: estudio prospectivo, randomizado y doble ciego". Respuesta / No disponible

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Remifentanilo intravenoso en el parto de un óbito fetal / No disponible

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[Bolus administration of fentanyl vs continuous perfusion of remifentanil for control of hemodynamic response to laryngoscopy and orotracheal intubation: a randomized double-blind trial]. / Comparación de bolus de fentanilo con perfusión de remifentanilo en el control de la respuesta hemodinámica a la laringoscopia e intubación orotraqueal: estudio prospectivo, randomizado y doble ciego.

OBJECTIVES: To compare the efficacy and safety of fentanyl and remifentanil in the prevention of hemodynamic responses to direct laryngoscopy and orotracheal intubation, and to compare the effects of these techniques on peripheral blood oxyhemoglobin saturation in normotensive women undergoing scheduled gynecologic surgery. MATERIAL AND METHODS: Prospective clinical trial in ASA 1-2 patients undergoing gynecologic surgery. The patients were randomized to 2 groups: the remifentanil group received a perfusion of 1 microg x kg(-1) x min(-1) until intubation whereas the fentanyl group received a bolus dose of 2 microg x kg(-1). Etomidate (0.3 mg x kg(-1)) and rocuronium bromide (0.6 mg x kg(-1)) were used for anesthetic induction. Seven serial measurements of systolic, diastolic, and mean arterial pressure were recorded in addition to heart rate and peripheral blood oxyhemoglobin saturation at the following times: baseline, denitrogenation, postinduction, and 3 more times at consecutive 2-minute intervals. RESULTS: Fifty-four patients were enrolled. A statistically significant attenuation of the postintubation hemodynamic response was observed in the remifentanil group. The effect was evident on arterial pressure (P=.0001) and heart rate (P=.031) with respect to baseline values. That protective effect was not seen in the fentanyl group. No differences in peripheral blood oxyhemoglobin saturation were observed. CONCLUSIONS: Remifentanil provides greater hemodynamic control than fentanyl at the doses utilized. No adverse effects attributable to these opioids were observed in either group.

Comparación de bolus de fentanilo con perfusión de remifentanilo en el control de larespuesta hemodinámica a la laringoscopia e intubación orotraqueal: estudioprospectivo, randomizado y doble ciego / Bolus administration of fentanyl vs continuous perfusion of remifentanil for control of hemodynamic response to laryngoscopy and orotracheal intubation: a randomized double-blind trial

OBJETIVOS: Comparar la eficacia y seguridad del fentanilocon remifentanilo en la prevención de la respuestahemodinámica asociada a la laringoscopia directa eintubación orotraqueal, y su repercusión sobre la saturaciónperiférica de oxígeno en mujeres normotensasprogramadas para cirugía ginecológica.MATERIAL Y MÉTODO: Estudio clínico prospectivo enpacientes ASA I-II sometidas a cirugía ginecológica. Sedistribuyeron de forma aleatoria en dos grupos: grupoR, remifentanilo 1 μg Kg–1 min–1 hasta la intubación ygrupo F, fentanilo 2 μg Kg–1. Para la inducción anestésicautilizamos etomidato (0,3 mg Kg–1) y bromuro derocuronio (0,6 mg Kg–1). Se realizaron siete medicionesseriadas de la presión arterial sistólica, diastólica ymedia, frecuencia cardiaca y saturación periférica deoxígeno durante los periodos: control, desnitrogenación,postinducción, postintubación y posteriormente cada dosminutos tres determinaciones consecutivas.RESULTADOS: Se incluyeron 54 pacientes. El grupo R mostróun efecto estadísticamente significativo de atenuación dela respuesta hemodinámica postintubación tanto en la presiónarterial (p = 0,0001), como en la frecuencia cardiaca(p = 0,031) respecto de su valor basal. Sin embargo, con elgrupo del fentanilo (grupo F), no se observó dicho efecto protector.No se observaron diferencias en la saturación periféricade oxígeno en ambos grupos durante el estudio.CONCLUSIONES: A las dosis utilizadas, el remifentanilocomparativamente con el fentanilo, ofrece mayor controlhemodinámico. No se observaron efectos secundarios enambos grupos atribuibles a los opiáceos(AU)

OBJETIVES: To compare the efficacy and safety offentanyl and remifentanil in the prevention ofhemodynamic responses to direct laryngoscopy andorotracheal intubation, and to compare the effects ofthese techniques on peripheral blood oxyhemoglobinsaturation in normotensive women undergoingscheduled gynecologic surgery.MATERIAL AND METHODS: Prospective clinical trial inASA 1-2 patients undergoing gynecologic surgery. Thepatients were randomized to 2 groups: the remifentanilgroup received a perfusion of 1 μg·kg-1·min-1 untilintubation whereas the fentanyl group received a bolusdose of 2 μg·kg-1. Etomidate (0.3 mg·kg-1) and rocuroniumbromide (0.6 mg·kg-1) were used for anesthetic induction.Seven serial measurements of systolic, diastolic, and meanarterial pressure were recorded in addition to heart rateand peripheral blood oxyhemoglobin saturation at thefollowing times: baseline, denitrogenation, postinduction,and 3 more times at consecutive 2-minute intervals.RESULTS: Fifty-four patients were enrolled. Astatistically significant attenuation of the postintubationhemodynamic response was observed in the remifentanilgroup. The effect was evident on arterial pressure(P=.0001) and heart rate (P=.031) with respect tobaseline values. That protective effect was not seen in thefentanyl group. No differences in peripheral bloodoxyhemoglobin saturation were observed.CONCLUSIONS: Remifentanil provides greaterhemodynamic control than fentanyl at the doses utilized.No adverse effects attributable to these opioids wereobserved in either group(AU)

[Hyperbaric bupivacaine: a randomized double-blind trial of different doses with or without fentanyl for cesarean section under spinal anesthesia]. / Estudio aleatorio, doble ciego sobre la utilización de diferentes dosis de bupivacaína hiperbara con o sin fentanilo, en cesáreas con anestesia subaracnoidea.

OBJECTIVES: To compare the effects of spinal anesthesia with different doses of hyperbaric bupivacaine with or without fentanyl in patients undergoing cesarean section. MATERIAL AND METHODS: Prospective study enrolling 50 ASA 1-2 patients undergoing cesarean section, randomized to 5 treatment groups. Groups A, B, C, and D received 15 microg of fentanyl and group X received no fentanyl. The doses of hyperbaric bupivacaine given in each group were as follows: 10 mg in Group A, 11 mg in group B, 12 mg in group C, 13 mg in group D, and 14 mg in group X. RESULTS: Patients in groups A and B had greater hemodynamic stability than patients in groups C, D, or X (P < 0.05). The incidence of hypotension was 70% in group C and 80% in groups D and X. The sensory block reached level T4 in groups D and X and the motor block was complete in all cases. Postoperative analgesia lasted longer in group D with a mean (SD) duration of 202 (25) minutes than in group X with a mean duration of 194 (19) minutes. Assessment on a visual analog scale was under 3 in all groups except group A, where 2 patients required administration of propofol. CONCLUSIONS: Acceptable operative conditions with a low incidence of hypotension are provided with an 11 mg dose of hyperbaric bupivacaine.

Estudio aleatorio, doble ciego sobre la utilización de diferentes dosis de bupivacaína hiperbara con o sin fentanilo, en cesáreas con anestesia subaracnoidea / Hyperbaric bupivacaine: a randomized double-blind trial of different doses with or without fentanyl for cesarean section under spinal anesthesia

OBJETIVOS: Comparar los efectos de la anestesia subaracnoidea, en pacientes sometidas a cesárea, empleando distintas dosis de bupivacaína hiperbara con o sin fentanilo. MATERIAL Y MÉTODOS: Estudio prospectivo con 50 pacientes ASA I-II sometidas a cesárea y distribuidas aleatoriamente en cinco grupos. Los grupos A, B, C y D con 15 μg de fentanilo y el grupo X sin fentanilo. Grupo A: 10 mg de bupivacaína hiperbara y fentanilo; grupo B: 11 mg de bupivacaína hiperbara y fentanilo; grupo C: 12 mg de bupivacaína y fentanilo; gupo D:13 mg de bupivacaína y fentanilo y grupo X: 14 mg de bupivacaína hiperbara sin fentanilo. RESULTADOS: Las pacientes de los grupos A y B presentaron mayor estabilidad hemodinámica frente a los pacientes de los grupos C, D y X (p < 0,05). La incidencia de hipotensión en estos grupos fue del 70% (grupo C) y del 80% (grupos D y X). En los grupos D y X se alcanzó un nivel de bloqueo sensitivo T4 y un bloqueo motor completo en todos los casos. La duración de la analgesia postoperatoria fue mayor en el grupo D que en el X (202 ± 25 min frente 194 ± 19 min). La EVA intraoperatoria se mantuvo por debajo de 3 en todos los grupos excepto en el grupo A, donde en 2 pacientes fue necesaria la administración de propofol. CONCLUSIONES: Con dosis de 11 mg de bupivacaína hiperbara (grupo B) obtenemos unas aceptables condiciones intraoperatorias, con una baja incidencia de hipotensión

OBJECTIVES: To compare the effects of spinal anesthesia with different doses of hyperbaric bupivacaine with or without fentanyl in patients undergoing cesarean section. MATERIAL AND METHODS: Prospective study enrolling 50 ASA1-2 patients undergoing cesarean section, randomized to 5 treatment groups. Groups A, B, C, and D received 15 μg of fentanyl and group X received no fentanyl. The doses of hyperbaric bupivacaine given in each group were as follows: 10 mg in Group A, 11 mg in group B, 12 mg in group C, 13 mg in group D, and 14 mg in group X. RESULTS: Patients in groups A and B had greater hemodynamic stability than patients in groups C, D, or X (p<0.05). The incidence of hypotension was 70% in group C and 80% in groups D and X. The sensory block reached level T4 in groups D and X and the motor block was complete in all cases. Postoperative analgesia lasted longer in group D with a mean (SD) duration of 202 (25) minutes than in group X with a mean duration of 194 (19) minutes. Assessment on a visual analog scale was under 3 in all groups except group A, where 2 patients required administration of propofol. CONCLUSIONS: Acceptable operative conditions with a low incidence of hypotension are provided with an 11 mg dose of hyperbaric bupivacaine

Parche hemático en paciente con cefalea post-punción dural / Blood patch in a patient with postdural puncture headache

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Un nuevo caso de lesión traqueal tras intubación difícil / A new case of tracheal lesion after difficult intubation

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