Low dose intrathecal morphine for hip arthroplasty / Dosis baja de morfina intratecal para artroplastía de cadera

OBJETIVES: 100 mcg intrathecal morphine (ITM) for hip arthroplasty provides adequate functional recovery and reduces associated complications but is not exempt from opioid-related adverse effects. We evaluate efficacy of a reduced dose of ITM (80 mcg) in terms of anesthetic quality, postoperative analgesia, complication rates and early recovery. METHODS: Case-control study. Patients under hip arthroplasty were treated on a specific protocol, using neuraxial anesthesia with hyperbaric bupivacaine 10.5-13.5 mg plus 80 mcg ITM versus controls with 100 mcg ITM. Demographic variables, intra and perioperative course were extracted from medical records. Pain severity and morphine associated complications were blindly assessed at regular intervals postoperatively. p < 0.01 were considered significant. RESULTS: 82 patients were analyzed. Mean age was 64.21 years, 62.20% women and 70.73% ASA-2. Main endoprosthesis indication was arthrosis (58.53%). No statistically significant differences in demographic and operative data were found between groups, including surgical time, ambulation time, length of stay, and patient satisfaction for pain management. Mean VAS for pain during first 24 hours was 0.24 for the low ITM group and 0.22 for control. Rescue intravenous morphine was the same between groups. Compared to 80 mcg ITM, 100 mcg showed trends for higher complication rates for respiratory depression (OR 2.58, CI 95% 0.45-14.54, p = 0.28), nausea without vomiting (OR 1.82, CI 95% 0.82-4.01, p = 0.13), urinary retention (OR 2.02, CI 95% 0.88-4.61, p = 0.09) and significantly higher rates of pruritus (OR 3.55, CI 95% 1.61-7.82, p < 0.01). CONCLUSIONS: 80 mcg ITM during spinal anesthesia for hip arthroplasty provided comparable postoperative analgesia and lower incidence of opioid-related adverse effects.

OBJETIVOS: 100 mcg morfina intratecal (ITM), en artroplastia de cadera, proporciona una recuperación funcional adecuada y reduce complicaciones asociadas, pero no está exento de efectos adversos conocidos asociados a opioides. Evaluamos eficacia de reducir dosis (80 mcg ITM) en términos de calidad anestésica, analgesia, complicaciones y recuperación postoperatoria. MÉTODOS: Estudio de casos y controles. Pacientes sometidos a artroplastia de cadera fueron tratados con anestesia espinal con bupivacaína hiperbárica 10,5-13,5 mg más 80 mcg ITM y controles de manera similar pero con 100 mcg ITM. Variables demográficas, así como intra y perioperatorio, se extrajeron de registros médicos. Severidad del dolor, y complicaciones asociadas a ITM, se evaluaron a ciegas según protocolo, p < 0,01 fue considerado significativo. RESULTADOS: 82 pacientes analizados. Edad promedio fue 64,21 años, 62,20% fueron mujeres y 70,73% ASA-2. Principal indicación de prótesis fue artrosis (58,53%). No se encontraron diferencias estadísticas entre variables demográficas, tiempo quirúrgico, tiempo deambulación, duración hospitalización y satisfacción paciente. EVA promedio dolor, primeras 24 horas, fue 0,24 para grupo 80 mcg ITM y 0,22 para control (100 mcg ITM). Morfina intravenosa de rescate fue similar entre grupos. En comparación con 80 mcg, 100 mcg presentó mayores tasas de complicaciones para depresión respiratoria (OR 2,58, IC95% 0,45-14,54, p = 0,28), náuseas y vómitos (OR 1,82, CI95% 0,82-4,01, p = 0,13), retención urinaria (OR 2,02, CI95% 0,88-4,61, p = 0,09) y prurito (OR 3,55, CI95% 1,61-7,82, p < 0,01). CONCLUSIONES: 80 mcg ITM, en anestesia espinal para artroplastia cadera, proporciona analgesia postoperatoria comparable a 100 mcg pero con menor incidencia de efectos adversos relacionados a opioides.

Low dose intrathecal morphine for hip arthroplasty / Dosis baja de morfina intratecal para artroplastía cadera

OBJECTIVES: 100 mcg intrathecal morphine (ITM) for hip arthroplasty provides adequate functional recovery and reduces associated complications but is not exempt from opioid-related adverse effects. We evaluate efficacy of a reduced dose of ITM (80 mcg) in terms of anesthetic quality, postoperative analgesia, complication rates and early recovery. METHODS: Case control study. Patients under hip arthroplasty were treated on a specific protocol, using neuraxial anesthesia with hyperbaric bupivacaine 10.5-13.5 mg plus 80 mcg ITM versus controls with 100 mcg ITM. Demographic variables, intra and perioperative course were extracted from medical records. Pain severity and morphine associated complications were blindly assessed at regular intervals postoperatively. p < 0.01 were considered significant. RESULTS: 82 patients were analyzed. Mean age was 64.21 years, 62.20% women and 70.73% ASA-2. Main endoprosthesis indication was arthrosis (58.53%). No statistically significant differences in demographic and operative data were found between groups, including surgical time, ambulation time, length of stay, and patient satisfaction for pain management. Mean VAS for pain during first 24 hours was 0.24 for the low ITM group and 0.22 for control. Rescue intravenous morphine was the same between groups. Compared to 80 mcg ITM, 100 mcg showed trends for higher complication rates for respiratory depression (OR 2.58, CI 95% 0.4514.54, p = 0.28), nausea without vomiting (OR 1.82, CI 95% 0.82-4.01, p = 0.13), urinary retention (OR 2.02, CI95% 0.88-4.61, p = 0.09) and significantly higher rates of pruritus (OR 3.55, CI 95% 1.61-7.82, p < 0.01). CONCLUSIONS: 80 mcg ITM during spinal anesthesia for hip arthroplasty provided comparable postoperative analgesia and lower incidence of opioid-related adverse effects.

OBJETIVOS: 100 mcg morfina intratecal (ITM), en artroplastía de cadera, proporciona una recuperación funcional adecuada y reduce complicaciones asociadas, pero no está exento de efectos adversos conocidos asociados a opioides. Evaluamos eficacia de reducir dosis (80 mcg ITM) en términos de calidad anestésica, analgesia, complicaciones y recuperación postoperatoria. MÉTODOS: Estudio de casos y controles. Pacientes sometidos a artroplastía de cadera fueron tratados con anestesia espinal con bupivacaína hiperbárica 10,5-13,5 mg más 80 mcg ITM y controles de manera similar, pero con 100 mcg ITM. Variables demográficas, así como intra y perioperatorio, se extrajeron de registros médicos. Severidad del dolor, y complicaciones asociadas a ITM, se evaluaron a ciegas según protocolo. p < 0,01 fue considerado significativo. RESULTADOS: 82 pacientes analizados. Edad promedio fue 64,21 años, 62,20% fueron mujeres y 70,73% ASA-2. Principal indicación de prótesis fue artrosis (58,53%). No se encontraron diferencias estadísticas entre variables demográficas, tiempo quirúrgico, tiempo deambulación, duración hospitalización y satisfacción paciente. EVA promedio dolor, primeras 24 horas, fue 0,24 para grupo 80 mcg ITM y 0,22 para control (100 mcg ITM). Morfina intravenosa de rescate fue similar entre grupos. En comparación con 80 mcg, 100 mcg presentó mayores tasas de complicaciones para depresión respiratoria (OR 2,58, IC 95% 0,45-14,54, p = 0,28), náuseas y vómitos (OR 1,82, CI 95% 0,82-4,01, p = 0,13), retención urinaria (OR 2,02, CI 95% 0,88-4,61, p = 0,09) y prurito (OR 3,55, CI 95% 1,61-7.82, p < 0,01). CONCLUSIONES: 80 mcg ITM, en anestesia espinal para artroplastía cadera, proporciona analgesia postoperatoria comparable a 100 mcg, pero con menor incidencia de efectos adversos relacionados a opioides.

Síndrome de Hallermann-Streiff y embarazo: manejo de la vía aérea difícil en embarazadas / Hallermann-Streiff syndrome and pregnancy: management of difficult airway in pregnant women

El síndrome de Hallermann-Streiff es una rara entidad asociada a hipoplasia del tercio inferior de la cara, determinando así una vía aérea de difícil manejo. Se presenta el caso de una mujer de 21 años con ese síndrome, acondroplasia, escoliosis severa e infección respiratoria los días previos a la interrupción exitosa de su embarazo mediante cesárea. El manejo requirió una cuidadosa evaluación preoperatoria y disponibilidad inmediata de dispositivos alternativos para el manejo de la vía aérea en caso necesario. La gravidez, así como ciertas comorbilidades asociadas, aumentan la posibilidad de una intubación fallida con morbi-mortalidad secundaria importante, dado ello, es necesaria la preparación e implementación de algoritmos atingentes para el manejo de la vía aérea en casos como el presentado.

The Hallermann-Streiff syndrome is a rare entity associated to hypoplasia of the lower third of the face, determining a difficult airway management. We report the case of a 21 years female with this syndrome, achondroplasia, severe scoliosis and respiratory infection at the days prior to the interruption of her preg-nancy by cesarean section. Her management required a carefully preoperative evaluation and availability of alternative devices to secure her airway. Pregnancy and certain comorbidities increase the chance of a failed intubation with severe secondary morbidity and mortality, given this, the correct preparation and implementation of difficult airway algorithms in pregnancy if it’s necessary.

Evaluación preoperatoria y predictores de morbimortalidad en resección de cáncer de pulmón / Preoperative evaluation and predictors of mortality in lung cancer resection

Surgical resection of lung cancer, the only available curative option today, is strongly associated with mortality. The goal during the perioperative period is to identify and evaluate appropriate candidates for lung resection in a more careful way and reduce the immediate perioperative risk and posterior disability. This is a narrative review of perioperative risk assessment in lung cancer resection. Instruments designed to facilitate decision-making have been implemented in recent years but with contradictory results. Cardiovascular risk assessment should be the first step before a potential lung resection, considering that most of these patients are old, smokers and have atherosclerosis. Respiratory mechanics determined by postoperative forced expiratory volume in the first second (FEV1), the evaluation of the alveolar-capillary membrane by diffusing capacity of carbon monoxide and cardiopulmonary function measuring the maximum O2 consumption, will give clues about the patient s respiratory and cardiac response to stress. With these assessments, the patient and its attending team can reach a treatment decision balancing the perioperative risk, the chances of survival and the pulmonary long-term disability.

Gangrena esplénica por Streptococcus anginosus post manga gástrica laparoscópica complicada con hemoperitoneo y comunicación gastroesplénica secundaria: Caso clínico / Splenic gangrene due to Streptococcus anginosus after a sleeve gastrectomy: Report of one case

We report a 46-year-old woman, subjected to a laparoscopic sleeve gastrectomy, that had to be converted to open surgery due to the presence of adherences. She required an immediate new intervention due to a hemoperitoneum caused by a liver tear and venous bleeding from the splenic hilus. Both lesions were successfully repaired. In the postoperative period the patient had fever, leukocytosis and sialorrhea. A CAT scan showed a splenic infarction and a huge intra abdominal collection that communicated with the stomach. Streptococcus anginosus was isolated from the collection. The patient was managed with antimicrobials and percutaneous drainage with a favourable evolution and closure of the communication with the stomach.