Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 16 de 16
Filtrar
1.
J Clin Med ; 12(24)2023 Dec 18.
Artículo en Inglés | MEDLINE | ID: mdl-38137815

RESUMEN

BACKGROUND: Retrospective studies support that mean perfusion pressure (MPP) deficit in cardiac surgery patients is associated with a higher incidence of acute kidney injury (CS-AKI). The aim of our study was to apply an algorithm based on MPP in the postoperative period to determine whether management with an individualized target reduces the incidence of CS-AKI. METHODS: Randomized controlled trial of patients undergoing cardiac surgery with extracorporeal circulation. Adult patients submitted to valve replacement and/or bypass surgery with a high risk of CS-AKI evaluated by a Leicester score >30 were randomized to follow a target MPP of >75% of the calculated baseline or a standard hemodynamic management during the first postoperative 24 h. RESULTS: Ninety-eight patients with an eGFR of 54 mL/min were included. There were no differences in MAP and MPP in the first 24 h between the randomized groups, although a higher use of noradrenaline was found in the intervention arm (38.78 vs. 63.27, p = 0.026). The percentage of time with MPP < 75% of measured baseline was similar in both groups (10 vs. 12.7%, p = 0.811). MAP during surgery was higher in the intervention group (73 vs. 77 mmHg, p = 0.008). The global incidence of CS-AKI was 36.7%, being 38.6% in the intervention group and 34.6% in the control group (p = 0.40). There were no differences in extrarenal complications between groups as well. CONCLUSION: An individualized hemodynamic management based on MPP compared to standard treatment in cardiac surgery patients was safe but did not reduce the incidence of CS-AKI in our study.

2.
Front Nephrol ; 3: 1059668, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37675375

RESUMEN

Background: The incidence of acute kidney injury following cardiac surgery (CSA-AKI) is up to 30%, and the risk of chronic kidney disease (CKD) has been found to be higher in these patients compared to the AKI-free population. The aim of our study was to assess the risk of major adverse kidney events (MAKE) [25% or greater decline in estimated glomerular filtration rate (eGFR), new hemodialysis, and death] after cardiac surgery in a Spanish cohort and to evaluate the utility of the score developed by Legouis D et al. (CSA-CKD score) in predicting the occurrence of MAKE. Methods: This was a single-center retrospective study of patients who required cardiac surgery with cardiopulmonary bypass (CPB) during 2015, with a 1-year follow-up after the intervention. The inclusion criteria were patients over 18 years old who had undergone cardiac surgery [i.e., valve substitution (VS), coronary artery bypass graft (CABG), or a combination of both procedures]. Results: The number of patients with CKD (eGFR < 60 mL/min) increased from 74 (18.3%) to 97 (24%) within 1 year after surgery. The median eGFR declined from 85 to 82 mL/min in the non-CSA-AKI patient group and from 73 to 65 mL/min in those with CSA-AKI (p = 0.024). Fifty-eight patients (1.4%) presented with MAKE at the 1-year follow-up. Multivariate logistic regression analysis showed that the only variable associated with MAKE was CSA-AKI [odds ratio (OR) 2.386 (1.31-4.35), p = 0.004]. The median CSA-CKD score was higher in the MAKE cohort [3 (2-4) vs. 2 (1-3), p < 0.001], but discrimination was poor, with a receiver operating characteristic curve (AUC) value of 0.682 (0.611-0.754). Conclusion: Any-stage CSA-AKI is associated with a risk of MAKE after 1 year. Further research into new measures that identify at-risk patients is needed so that appropriate patient follow-up can be carried out.

3.
J Clin Med ; 11(4)2022 Feb 09.
Artículo en Inglés | MEDLINE | ID: mdl-35207177

RESUMEN

The incidence of acute kidney injury following cardiac surgery (CSA-AKI) is up to 30%, and it places patients at an increased risk of death. The Leicester score (LS) is a new score that predicts CSA-AKI of any stage with better discrimination compared to previous scores. The aim of this study was to identify risk factors for CSA-AKI and to assess the performance of LS. A unicentric retrospective study of patients that required cardiac surgery with cardio-pulmonary bypass (CPB) in 2015 was performed. The inclusion criteria were patients over 18 years old who were operated on for cardiac surgery (valve substitution (VS), Coronary Artery Bypass Graft (CABG), or a combination of both procedures and requiring CPB). CSA-AKI was defined with the Kidney Disease Improving Global Outcomes (KDIGO) criteria. In the multivariate analysis, hypertension (odds ratio 1.883), estimated glomerular filtration rate (EGFR) <60 mL/min (2.365), and peripheral vascular disease (4.66) were associated with the outcome. Both discrimination and calibration were better when the LS was used compared to the Cleveland Clinic Score and Euroscore II, with an area under the curve (AUC) of 0.721. In conclusion, preoperative hypertension in patients with CKD with or without peripheral vasculopathy can identify patients who are at risk of CSA-AKI. The LS was proven to be a valid score that could be used to identify patients who are at risk and who could benefit from intervention studies.

4.
Int J Cardiovasc Imaging ; 37(7): 2189-2196, 2021 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-34009543

RESUMEN

Tricuspid regurgitation is associated with a poor outcome and its quantification remains a challenge. Tricuspid annulus dilatation is one of the parameters that influences clinical decision-making. The aim of this study was to compare the use of 2D transoesophageal echocardiography with surgical assessment for the measurement of the tricuspid annulus. Sixty-one cardiac patients (median age 64 years) were included in the study. Echocardiographic tricuspid annulus measurements were obtained from four chamber and transgastric short axis views and compared with the surgical measurements of this valve. The study was approved by the Ethics Committee of our institution. The tricuspid annulus measurements were obtained from the four chamber and the short axis views in 57 and 49 patients, respectively, while surgical measurement was performed in all 61 patients. Bland-Altman analysis of 49 tricuspid annulus-matched dimensions of the short axis view and surgical values showed a mean bias of 0.223 mm/m2, with limits of agreement of -5.86 to 6.31 mm/m2. Echocardiographic measurements of the tricuspid annulus dimension were accurate (90% sensitivity and 90% specificity for a four chamber view cut-off value ≥ 24.5 mm/m2, and 89% sensitivity and 97% specificity for a short axis view cut-off value ≥ 37.6 mm/m2, P < 0.0001; both cases) for detecting directly assessed annular dilatation by the surgeon in the operative field. Echocardiographic values of tricuspid annulus dimension have a good predictive value to detect surgically assessed annular dilatation and may help identify patients who require surgical tricuspid intervention.


Asunto(s)
Insuficiencia de la Válvula Tricúspide , Válvula Tricúspide , Ecocardiografía , Ecocardiografía Transesofágica , Humanos , Recién Nacido , Valor Predictivo de las Pruebas , Válvula Tricúspide/diagnóstico por imagen , Válvula Tricúspide/cirugía , Insuficiencia de la Válvula Tricúspide/diagnóstico por imagen , Insuficiencia de la Válvula Tricúspide/cirugía
5.
Artículo en Inglés | MEDLINE | ID: mdl-33000922

RESUMEN

This video tutorial  presents the reconstruction of the intervalvular fibrosa and a triple valve replacement, due to prosthetic valve endocarditis, in a patient with previous chest irradiation and bicuspid aortic valve replacement. Constrictive pericarditis was also present since the original operation. A detailed step-by-step demonstration of the reconstruction of the intervalvular fibrosa and debridement of extensive prosthetic valve endocarditis with paravalvular root abscess are provided.  A secondary sternotomy was performed and, in the process, the ascending aorta was injured, with associated life-threatening bleeding. Manual compression was applied while peripheral cannulation and cardiopulmonary bypass were started. The bleeding was controlled with cooling and circulatory arrest and the ascending aorta was replaced with a Dacron graft. The intervalvular fibrosa was reconstructed using a folded pericardial patch.  Aortic root replacement with a cryopreserved homograft was performed and the mitral and tricuspid valves were replaced with tissue valve prostheses. A complete pericardiectomy was performed. The chest was left packed with cotton due to diffuse bleeding. At the time of the delayed chest closure, a permanent epicardial pacemaker was implanted.


Asunto(s)
Aorta , Endocarditis Bacteriana , Implantación de Prótesis de Válvulas Cardíacas/efectos adversos , Prótesis Valvulares Cardíacas/efectos adversos , Válvulas Cardíacas/cirugía , Complicaciones Intraoperatorias , Pericardiectomía/métodos , Pericarditis Constrictiva , Infecciones Relacionadas con Prótesis/cirugía , Aorta/lesiones , Aorta/cirugía , Endocarditis Bacteriana/etiología , Endocarditis Bacteriana/cirugía , Implantación de Prótesis de Válvulas Cardíacas/instrumentación , Implantación de Prótesis de Válvulas Cardíacas/métodos , Humanos , Complicaciones Intraoperatorias/etiología , Complicaciones Intraoperatorias/cirugía , Masculino , Persona de Mediana Edad , Pericarditis Constrictiva/etiología , Pericarditis Constrictiva/cirugía , Reoperación/métodos , Resultado del Tratamiento , Injerto Vascular/métodos
6.
Int J Artif Organs ; 40(12): 676-682, 2017 Nov 24.
Artículo en Inglés | MEDLINE | ID: mdl-28862718

RESUMEN

BACKGROUND: Regional citrate anticoagulation (RCA) is being used increasingly in continuous renal replacement therapy (CRRT) as a safer alternative to heparin. However, complex metabolic control to avoid side effects have generated discrepancies about its introduction into everyday practice. We aimed to compare both anticoagulation techniques in terms of efficacy, safety and feasibility. METHODS: Observational retrospective study performed in 3 specialized ICUs in patients receiving CVVHDF with RCA between January 2013 and May 2016. Heparin-treated patients matched by age, sex and disease severity treated in the preceding year were selected as historic controls. Filter lifetime, number of filters used, haemorrhagic complications and metabolic complications were recorded. RESULTS: 54 patients (27 treated with RCA and 27 with heparin) were included in the study. Filter lifetimes in the first 72 hours were 55.1 ± 21.8 hours in the RCA group compared to 38.8 ± 24.8 hours in the heparin group, (p = 0.004). In addition, the number of filters used in the first 72 hours was significantly higher in the heparin group (2.4 ± 1.3 vs. 1.5 ± 0.7; p = 0.004). There was a trend toward a lower incidence of bleeding in the RCA group, with a significantly lower red blood cell transfusion rate (p = 0.027) in the citrate group. No clinically significant metabolic disturbances were observed in the RCA group. Regarding outcomes, there were no significant differences between groups. CONCLUSIONS: These results suggest that the implementation of CVVHDF with RCA using concentrated citrate solutions prolongs filter lifetime, achieves a longer effective hemodiafiltration time and is a safe and feasible method.


Asunto(s)
Lesión Renal Aguda , Ácido Cítrico , Enfermedad Crítica/terapia , Hemorragia , Heparina , Terapia de Reemplazo Renal , Lesión Renal Aguda/etiología , Lesión Renal Aguda/terapia , Anciano , Anticoagulantes/administración & dosificación , Anticoagulantes/efectos adversos , Coagulación Sanguínea/efectos de los fármacos , Ácido Cítrico/administración & dosificación , Ácido Cítrico/efectos adversos , Femenino , Hemodiafiltración/efectos adversos , Hemodiafiltración/métodos , Hemorragia/inducido químicamente , Hemorragia/prevención & control , Heparina/administración & dosificación , Heparina/efectos adversos , Humanos , Masculino , Persona de Mediana Edad , Terapia de Reemplazo Renal/efectos adversos , Terapia de Reemplazo Renal/métodos , Estudios Retrospectivos , España
7.
Chest ; 150(3): 533-43, 2016 09.
Artículo en Inglés | MEDLINE | ID: mdl-27020420

RESUMEN

BACKGROUND: Idiopathic pulmonary fibrosis (IPF) is a progressive and fatal lung disease with limited response to currently available therapies. Alveolar type II (ATII) cells act as progenitor cells in the adult lung, contributing to alveolar repair during pulmonary injury. However, in IPF, ATII cells die and are replaced by fibroblasts and myofibroblasts. In previous preclinical studies, we demonstrated that ATII-cell intratracheal transplantation was able to reduce pulmonary fibrosis. The main objective of this study was to investigate the safety and tolerability of ATII-cell intratracheal transplantation in patients with IPF. METHODS: We enrolled 16 patients with moderate and progressive IPF who underwent ATII-cell intratracheal transplantation through fiberoptic bronchoscopy. We evaluated the safety and tolerability of ATII-cell transplantation by assessing the emergent adverse side effects that appeared within 12 months. Moreover, pulmonary function, respiratory symptoms, and disease extent during 12 months of follow-up were evaluated. RESULTS: No significant adverse events were associated with the ATII-cell intratracheal transplantation. After 12 months of follow-up, there was no deterioration in pulmonary function, respiratory symptoms, or disease extent. CONCLUSIONS: Our results support the hypothesis that ATII-cell intratracheal transplantation is safe and well tolerated in patients with IPF. This study opens the door to designing a clinical trial to elucidate the potential beneficial effects of ATII-cell therapy in IPF.


Asunto(s)
Células Epiteliales Alveolares/trasplante , Trasplante de Células/métodos , Rechazo de Injerto/prevención & control , Fibrosis Pulmonar Idiopática/terapia , Inmunosupresores/uso terapéutico , Corticoesteroides/uso terapéutico , Anciano , Antiinfecciosos/uso terapéutico , Infecciones Bacterianas/prevención & control , Broncoscopía , Progresión de la Enfermedad , Femenino , Volumen Espiratorio Forzado , Ganciclovir/análogos & derivados , Ganciclovir/uso terapéutico , Humanos , Fibrosis Pulmonar Idiopática/diagnóstico por imagen , Fibrosis Pulmonar Idiopática/fisiopatología , Leucovorina/uso terapéutico , Masculino , Persona de Mediana Edad , Ácido Micofenólico/uso terapéutico , Micosis/prevención & control , Nistatina/uso terapéutico , Capacidad de Difusión Pulmonar , Tacrolimus/uso terapéutico , Tráquea , Resultado del Tratamiento , Combinación Trimetoprim y Sulfametoxazol/uso terapéutico , Valganciclovir , Virosis/prevención & control , Capacidad Vital , Prueba de Paso
8.
Arch. bronconeumol. (Ed. impr.) ; 50(12): 521-527, dic. 2014. ilus, tab, graf
Artículo en Español | IBECS | ID: ibc-130997

RESUMEN

Introducción: La endarterectomía pulmonar (EP) es el tratamiento de elección para la hipertensión pulmonar tromboembólica crónica (HPTEC). El objetivo del estudio fue analizar nuestra experiencia en el tratamiento médico (TM) y quirúrgico de la HPTEC. Métodos: Se evaluaron 80 pacientes diagnosticados de HPTEC en el periodo enero 2000-julio 2012. En 32 casos se realizó EP, el resto recibió TM. Se analizaron: clase funcional (CF), distancia recorrida en seis minutos (PM6M) y hemodinámica pulmonar. Se analizó la mortalidad según el tratamiento y el periodo. Resultados: Los pacientes del grupo EP eran más jóvenes, mayoritariamente hombres y recorrieron mayor distancia en la PM6M. No hubo diferencias hemodinámicas ni de CF al diagnóstico. Al a˜no del tratamiento, el 100% del grupo EP y el 41% del grupo TM estaban en CF I-II. Al seguimiento, el grupo EP presentó mayor incremento en la PM6M y mayor reducción de la PAPm y la RVP que en el grupo TM (p < 0,05). La supervivencia global del grupo TM a 1 y 5 a˜nos fue del 83% y del 69%, respectivamente. La supervivencia condicionada de los pacientes vivos 100 días post-EP a 1 y 5 a˜nos fue del 95 y del 88%, respectivamente. La mortalidad quirúrgica en los pacientes operados en el período 2000-2006 fue del 31,3%, y en el período 2007-2012, del 6,3%. Conclusiones: La EP proporciona buenos resultados clínicos, hemodinámicos y de supervivencia en los pacientes que superan satisfactoriamente el postoperatorio inmediato. Tras un periodo de aprendizaje, la mortalidad perioperatoria actual en nuestro centro es superponible a los estándares internacionales


Introduction: Pulmonary endarterectomy (PE) is the treatment of choice for chronic thromboembolic pulmonary hypertension (CTEPH). The aim of this study was to analyze our experience in the medical and surgical management of CTEPH. Methods: We included 80 patients diagnosed with CTEPH between January 2000 and July 2012. Thirty two patients underwent PE and 48 received medical treatment (MT). We analyzed functional class (FC), sixminute walking distance (6MWD) and pulmonary hemodynamics. Mortality in both groups and periods were analyzed. Results: Patients who underwent PE were younger, mostly men, and had longer 6MWD. No differences were observed in pulmonary hemodynamics or FC at diagnosis. One year after treatment, all PE patients versus 41% in MT group were at FC I-II. At follow-up, the PE group showed greater increase in 6MWD, and greater reduction in mean pulmonary arterial pressure and pulmonary vascular resistance than the MT group (P < .05). Overall survival in the MT group at 1 and 5 years was 83% and 69%, respectively. Conditional survival in patients alive 100 days post-PE at 1 and 5 years was 95% and 88%, respectively. Surgical mortality in operated patients in the first period (2000-2006) was 31,3%, and 6,3% in the second (2007-2012). Conclusions: PE provides good clinical results, and improves pulmonary hemodynamics in patients who successfully overcome the immediate postoperative period. After a learning period, the current operatory mortality in our center is similar to international standards


Asunto(s)
Humanos , Hipertensión Pulmonar/cirugía , Embolia Pulmonar/cirugía , Endarterectomía/métodos , Estudios de Casos y Controles , Enfermedad Crónica , Estudios Prospectivos , Filtros de Vena Cava , Complicaciones Posoperatorias/epidemiología
9.
Arch Bronconeumol ; 50(12): 521-7, 2014 Dec.
Artículo en Inglés, Español | MEDLINE | ID: mdl-24957814

RESUMEN

INTRODUCTION: Pulmonary endarterectomy (PE) is the treatment of choice for chronic thromboembolic pulmonary hypertension (CTEPH). The aim of this study was to analyze our experience in the medical and surgical management of CTEPH. METHODS: We included 80 patients diagnosed with CTEPH between January 2000 and July 2012. Thirty two patients underwent PE and 48 received medical treatment (MT). We analyzed functional class (FC), six-minute walking distance (6MWD) and pulmonary hemodynamics. Mortality in both groups and periods were analyzed. RESULTS: Patients who underwent PE were younger, mostly men, and had longer 6MWD. No differences were observed in pulmonary hemodynamics or FC at diagnosis. One year after treatment, all PE patients versus 41% in MT group were at FCI-II. At follow-up, the PE group showed greater increase in 6MWD, and greater reduction in mean pulmonary arterial pressure and pulmonary vascular resistance than the MT group (P<.05). Overall survival in the MT group at 1 and 5years was 83% and 69%, respectively. Conditional survival in patients alive 100days post-PE at 1 and 5years was 95% and 88%, respectively. Surgical mortality in operated patients in the first period (2000-2006) was 31,3%, and 6,3% in the second (2007-2012). CONCLUSIONS: PE provides good clinical results, and improves pulmonary hemodynamics in patients who successfully overcome the immediate postoperative period. After a learning period, the current operatory mortality in our center is similar to international standards.


Asunto(s)
Endarterectomía , Hipertensión Pulmonar/terapia , Embolia Pulmonar/complicaciones , Adulto , Anciano , Presión Sanguínea , Bloqueadores de los Canales de Calcio/uso terapéutico , Enfermedad Crónica , Terapia Combinada , Manejo de la Enfermedad , Endarterectomía/mortalidad , Antagonistas de los Receptores de Endotelina/uso terapéutico , Prueba de Esfuerzo , Femenino , Estudios de Seguimiento , Humanos , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Inhibidores de Fosfodiesterasa/uso terapéutico , Prostaglandinas/uso terapéutico , Circulación Pulmonar , Embolia Pulmonar/diagnóstico , Embolia Pulmonar/tratamiento farmacológico , Embolia Pulmonar/cirugía , Resultado del Tratamiento , Resistencia Vascular , Filtros de Vena Cava
10.
Rev. méd. Chile ; 139(12): 1553-1561, dic. 2011. ilus, tab
Artículo en Español | LILACS | ID: lil-627589

RESUMEN

Background: Neuropsychological dysfunction is a major cause of morbidity and mortality after cardiac surgery. Aim: To evaluate if intraoperative cerebral desatu-ration and depth of anesthesia measured by bispectral index are related to postoperative cognitive dysfunction in cardiac surgery. Material and Methods: Prospective study in patients undergoing elective cardiac surgery with cardiopulmonary bypass. A comprehensive neuropsychological assessment was applied preoperatively and 3 months after surgery. Postoperative dysfunction was defined as a decrease of at least one standard deviation in two or more neuropsychological tests. Cerebral oxygenation and bispectral index were continuously recorded and corrected throughout surgery. Cerebral oxygenation data were analyzed by the mean value and at three thresholds: 50%, 40% and < 25% of the basal value. Bispectral index was analyzed at threshold of 45. Results: Fifty-six patients were initially enrolled and 48 completed the study. Nine of these (18.8 %) presented postoperative cognitive dysfunction. Mean cerebral saturation and bispectral index data were not different among the patients with or without cognitive dysfunction. There was no association between cerebral desaturation and bispectral index with changes in neurocognitive tests or with length of stay in the intensive care unit. A significant but weak correlation was found between baseline Ray-neurocognitive score and intensive care unit stay (rho = -0.46; P = 0.001). Conclusions: We did not find a significant association between cerebral desaturation and depth of anesthesia with postoperative cognitive decline in this population of patients.


Asunto(s)
Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Anestesia/efectos adversos , Circulación Cerebrovascular/fisiología , Trastornos del Conocimiento/etiología , Puente de Arteria Coronaria/efectos adversos , Monitoreo Intraoperatorio/métodos , Consumo de Oxígeno/fisiología , Trastornos del Conocimiento/diagnóstico , Electroencefalografía , Métodos Epidemiológicos , Unidades de Cuidados Intensivos , Tiempo de Internación/estadística & datos numéricos , Complicaciones Posoperatorias/etiología
11.
Rev Med Chil ; 139(12): 1553-61, 2011 Dec.
Artículo en Español | MEDLINE | ID: mdl-22446701

RESUMEN

BACKGROUND: Neuropsychological dysfunction is a major cause of morbidity and mortality after cardiac surgery. AIM: To evaluate if intraoperative cerebral desaturation and depth of anesthesia measured by bispectral index are related to postoperative cognitive dysfunction in cardiac surgery. MATERIAL AND METHODS: Prospective study in patients undergoing elective cardiac surgery with cardiopulmonary bypass. A comprehensive neuropsychological assessment was applied preoperatively and 3 months after surgery. Postoperative dysfunction was defined as a decrease of at least one standard deviation in two or more neuropsychological tests. Cerebral oxygenation and bispectral index were continuously recorded and corrected throughout surgery. Cerebral oxygenation data were analyzed by the mean value and at three thresholds: 50%, 40% and < 25% of the basal value. Bispectral index was analyzed at threshold of 45. RESULTS: Fifty-six patients were initially enrolled and 48 completed the study. Nine of these (18.8 %) presented postoperative cognitive dysfunction. Mean cerebral saturation and bispectral index data were not different among the patients with or without cognitive dysfunction. There was no association between cerebral desaturation and bispectral index with changes in neurocognitive tests or with length of stay in the intensive care unit. A significant but weak correlation was found between baseline Ray-neurocognitive score and intensive care unit stay (rho = -0.46; P = 0.001). CONCLUSIONS: We did not find a significant association between cerebral desaturation and depth of anesthesia with postoperative cognitive decline in this population of patients.


Asunto(s)
Anestesia/efectos adversos , Circulación Cerebrovascular/fisiología , Trastornos del Conocimiento/etiología , Puente de Arteria Coronaria/efectos adversos , Monitoreo Intraoperatorio/métodos , Consumo de Oxígeno/fisiología , Anciano , Trastornos del Conocimiento/diagnóstico , Electroencefalografía , Métodos Epidemiológicos , Femenino , Humanos , Unidades de Cuidados Intensivos , Tiempo de Internación/estadística & datos numéricos , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias/etiología
12.
J Thorac Cardiovasc Surg ; 140(3): 558-63, 563.e1-2, 2010 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-20723725

RESUMEN

OBJECTIVE: We sought to investigate the safety and feasibility of obtaining total respiratory support during 72 hours using a pump-driven (Levitronix CentriMag; Levitronix LLC, Waltham, Mass) venous-venous extracorporeal lung membrane (Novalung; Novalung GmbH, Hechingen, Germany) attached through a single double-lumen cannula (Novalung) into the femoral or jugular vein in pigs. METHODS: Twelve pigs were initially mechanically ventilated for 2 hours (respiratory rate, 20-25 breaths/min; tidal volume, 10-12 mL/kg; fraction of inspired oxygen, 1.0; positive end-expiratory pressure, 5 cm H(2)O). Thereafter, the extracorporeal lung membrane was attached to the right femoral (n = 6, 26F) or jugular (n = 6, 22F) vein by using a single double-lumen cannula placed transcutaneously. Ventilatory settings were then reduced to near-apneic ventilation (respiratory rate, 4 breaths/min; tidal volume, 1-2 mL/kg; fraction of inspired oxygen, 0.21; positive end-expiratory pressure, 10 cm H(2)O), and pump flow was increased hourly until maximal efficacy. Blood gases and hemodynamics were measured hourly, and lung and plasma cytokine levels were measured every 4 hours. RESULTS: The device's mean blood flow was 2.16 +/- 0.43 L/min, permitting an oxygen transfer and carbon dioxide removal of 203.6 +/- 54.6 and 590.3 +/- 23.3 mL/min, respectively. Despite static ventilation, all pigs showed optimal respiratory support, with a PaO(2), PaCO(2), and mixed venous oxygen saturation of 226.2 +/- 56.4, 59.7 +/- 8.8, and 85.6 +/- 5.3 mm Hg, respectively. There were no significant inflammatory, cellular, or coagulatory responses; lung cytokine levels remained in the normal range. Route (femoral vs jugular) or size (22F vs 26F) of the cannula did not change hemodynamic or respiratory parameters significantly. CONCLUSIONS: This circuit provides total respiratory support over 72 hours without inducing significant hemodynamic, coagulatory, cellular, or inflammatory responses.


Asunto(s)
Oxigenación por Membrana Extracorpórea/instrumentación , Vena Femoral , Corazón Auxiliar , Venas Yugulares , Pulmón/fisiología , Respiración con Presión Positiva , Animales , Coagulación Sanguínea , Dióxido de Carbono/sangre , Citocinas/sangre , Diseño de Equipo , Oxigenación por Membrana Extracorpórea/efectos adversos , Estudios de Factibilidad , Corazón Auxiliar/efectos adversos , Hemodinámica , Pulmón/irrigación sanguínea , Modelos Animales , Oxígeno/sangre , Neumonía/etiología , Neumonía/prevención & control , Respiración con Presión Positiva/efectos adversos , Mecánica Respiratoria , Porcinos , Volumen de Ventilación Pulmonar , Factores de Tiempo , Lesión Pulmonar Inducida por Ventilación Mecánica/etiología , Lesión Pulmonar Inducida por Ventilación Mecánica/prevención & control
13.
Ann Thorac Surg ; 89(2): 387-90; discussion 390-1, 2010 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-20103305

RESUMEN

BACKGROUND: The need to compromise between surgical and anesthetic access in airway surgery is an important clinical problem. We wanted to determine the feasibility of performing upper airway surgery under awake anesthesia and spontaneous respiration. METHODS: This was a prospective, clinical feasibility study. Patients with upper tracheal stenosis were managed through cervical epidural anesthesia and conscious sedation, and atomized local anesthetic. No intraoperative intubation or jet ventilation was required. Outcome measures were ease of surgery, observer-rated functional result, early (less than 30 days) complications, and patient-reported satisfaction. RESULTS: Twenty consecutive patients with idiopathic (n = 4) or postintubation (n = 16) complete (n = 3) or severe (>80%, n = 17) subglottic (n = 12) or upper trachea (n = 8) stenosis were enrolled. Operations included 12 subglottic and 8 segmental resections with primary anastomosis. Permissive hypercapnia was well tolerated. Median length of resection was 4.5 cm (range, 2 to 6 cm), and 12 releases (8 thyrohyoid, 4 suprahyoid) were required. One patient required a nasotracheal tube for 36 hours. All but 1 were able to cough and talk immediately, and to swallow fluids and solids, and were fully mobilized at 6 hours. There were no early complications. Median hospitalization was 3.1 days (range, 2 to 15). Patients had excellent (n = 16) or good (n = 4) functional (n = 20) outcomes, with no early relapse of stenosis. Median self-reported satisfaction at median 12 months was 9.5 +/- 1.0 (scale, 0 to 10). All patients indicated that they would be happy to repeat the procedure. CONCLUSIONS: Awake and tubeless upper airway surgery is feasible and safe, and has a high level of patient satisfaction. If supported by randomized controlled trial, this method will change the way airway stenosis surgery is approached by both surgeons and anesthesiologist.


Asunto(s)
Analgésicos Opioides , Anestesia Epidural , Anestésicos Locales , Sedación Consciente , Lidocaína , Piperidinas , Estenosis Traqueal/cirugía , Adulto , Aerosoles , Anastomosis Quirúrgica , Ambulación Precoz , Estudios de Factibilidad , Femenino , Estudios de Seguimiento , Ventilación con Chorro de Alta Frecuencia , Humanos , Intubación Intratraqueal , Laringe/cirugía , Tiempo de Internación , Masculino , Persona de Mediana Edad , Satisfacción del Paciente , Complicaciones Posoperatorias/etiología , Estudios Prospectivos , Remifentanilo , Tráquea/cirugía
14.
J Thorac Cardiovasc Surg ; 135(6): 1362-71, 2008 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-18544387

RESUMEN

OBJECTIVE: We compared conventional treatment with pumpless extracorporeal lung membrane (Interventional Lung Assist [iLA] Novalung; Novalung GmbH, Hechingen, Germany) support in a pig model of postpneumonectomy severe acute respiratory distress syndrome. METHODS: Adult pigs underwent a left thoracotomy without (group I) or with a left extrapericardial pneumonectomy and radical lymphadenectomy (groups II to V). After stabilization, pigs belonging to group II were observed only, whereas in those belonging to groups III to V, a surfactant-depletion severe (Pao(2)/Fio(2) < 100) postpneumonectomy acute respiratory distress syndrome was induced. This was followed by observation (group III); treatment with conventional therapy including protective ventilation, steroids, and nitric oxide (group IV); or femoral arteriovenous iLA Novalung placement, near-static ventilation, steroids, and nitric oxide (group V). Each group included 5 animals. Primary outcome was extubation 12 hours postoperatively or postpneumonectomy acute respiratory distress syndrome. RESULTS: A severe postpneumonectomy acute respiratory distress syndrome was obtained after 9 +/- 2 alveolar lavages over 90 +/- 20 minutes. In group V pigs, the iLA Novalung device diverted 17% +/- 4% of the cardiac output, permitted an oxygen transfer and carbon dioxide removal of 298.4 +/- 173.7 mL/min and 287.7 +/- 87.3 mL/min, respectively, and static ventilation (tidal volume, 2.2 +/- 1 mL/kg; respiratory rate, 6 +/- 2.9 breaths/min). All but 1 pig belonging to group V could be extubated compared with none in groups III and IV (P < .01), and only their lungs normalized cytokine release (P < .001) and surfactant (P < .03) and displayed fewer parenchymal lesions (P < .05). CONCLUSIONS: The pumpless extracorporeal lung membrane and near-static ventilation achieved a significantly better outcome than conventional treatment in this pig model of severe postpneumonectomy acute respiratory distress syndrome, probably because the injured lungs were not forced to work and this "rest" gave them more time to heal.


Asunto(s)
Oxigenación por Membrana Extracorpórea/métodos , Neumonectomía/efectos adversos , Respiración Artificial/métodos , Síndrome de Dificultad Respiratoria/etiología , Síndrome de Dificultad Respiratoria/terapia , Animales , Análisis de los Gases de la Sangre , Modelos Animales de Enfermedad , Neumonectomía/métodos , Circulación Pulmonar , Intercambio Gaseoso Pulmonar , Distribución Aleatoria , Síndrome de Dificultad Respiratoria/mortalidad , Pruebas de Función Respiratoria , Medición de Riesgo , Factores de Riesgo , Sensibilidad y Especificidad , Tasa de Supervivencia , Porcinos
15.
Ambul Pediatr ; 6(2): 72-8, 2006.
Artículo en Inglés | MEDLINE | ID: mdl-16530142

RESUMEN

OBJECTIVE: To describe the interrelationships between books and toys in the home, parent-child interaction, and child development at 21 months among low-income Latino children. METHODS: Latino mother-infant dyads enrolled in a level 1 nursery and infants were followed to 21 months. The subjects consisted of the control group of a larger intervention study. At 6 and 18 months, the number of books and toys in the home and the frequency of reading aloud were measured by the StimQ. At 21 months, child cognitive and language development and parent-child interaction were assessed by the Bayley Mental Development Index (MDI), the Preschool Language Scale-3 (PLS-3), and the Caregiver-Child Interaction Rating Scale, respectively. Eligibility for early intervention (EI) services was determined on the basis of the MDI and PLS-3. RESULTS: Data were obtained for 46 (63.0%) of 73 at 21 months. In multiple regression analysis, books provided at 18 months predicted both cognition (semipartial correlation [sr] = .49, P= .001) and receptive language (sr = .37, P= .02), whereas toys provided at both 6 and 18 months predicted 21-month receptive language (sr = .40, P= .01; sr = .32, P= .047, respectively). Reading aloud by parents > or =4 days a week was associated with decreased EI eligibility (adjusted odds ratio = 0.16, 95% confidence interval 0.03-0.99). CONCLUSIONS: Reading aloud and provision of toys are associated with better child cognitive and language development as well as with decreased likelihood of EI eligibility.


Asunto(s)
Libros , Desarrollo Infantil/fisiología , Hispánicos o Latinos , Relaciones Padres-Hijo , Juego e Implementos de Juego , Niño , Preescolar , Estudios de Cohortes , Femenino , Humanos , Lactante , Desarrollo del Lenguaje , Estudios Longitudinales , Masculino , Responsabilidad Parental , Valor Predictivo de las Pruebas , Probabilidad , Factores de Riesgo , Factores de Tiempo , Estados Unidos
16.
J Dev Behav Pediatr ; 26(1): 34-41, 2005 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-15718881

RESUMEN

The authors performed a randomized, controlled trial to assess the impact of the Video Interaction Project (VIP), a program based in pediatric primary care in which videotaped interactions are used by child development specialists to promote early child development. Ninety-three Latino children (51 VIP, 42 control) at risk of developmental delay on the basis of poverty and low maternal education (none had completed high school) were assessed for cognitive and language development at age 21 months. Results differed depending on the level of maternal education; the VIP was found to have a moderate impact on children whose mothers had between seventh and 11th grade education (approximately 0.75 SD for cognitive development, 0.5 SD for expressive language) but little impact on children whose mothers had sixth grade or lower education.


Asunto(s)
Discapacidades del Desarrollo/prevención & control , Educación en Salud/métodos , Trastornos del Desarrollo del Lenguaje/prevención & control , Responsabilidad Parental , Carencia Psicosocial , Adulto , Análisis de Varianza , Retroalimentación , Femenino , Hispánicos o Latinos , Humanos , Recién Nacido , Masculino , Ciudad de Nueva York , Visita a Consultorio Médico , Pediatría , Método Simple Ciego , Grabación de Cinta de Video
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...