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1.
Neurologia (Engl Ed) ; 2023 Apr 26.
Artículo en Inglés | MEDLINE | ID: mdl-37116689

RESUMEN

BACKGROUND: In addition to stent retrievers, direct aspiration has become a reasonable thrombectomy strategy. OBJECTIVES: We carried out the thrombectomy by guiding the aspiration catheter fully over the clot and performing immediate manual aspiration; we call this procedure "embed aspiration". METHODS: In this prospective, non-randomised, single-centre study, we included all patients treated at a high volume-of-care stroke centre between 2017 and 2018 for the TRIANA (Thrombectomy in Andalusia using Aspiration) registry. Thrombectomy was carried out by embed aspiration. Patients were classified according to the success (eTICI 2b67-2c-3) or failure (eTICI 0-1-2a-2b50) of the procedure. Baseline clinical data and outcomes were compared, and multivariate analysis was performed. RESULTS: The embed aspiration technique was used in 370 patients. Treatment was successful in 90.3% of patients. Mean puncture-to-recanalisation time was 25 minutes. The overall rate of good outcomes (mRS 0-2) at 3 months was 64%. CONCLUSIONS: This study supports real-life evidence that standardised embed aspiration may be an alternative to stent retrievers for thrombectomy.

2.
Clin Neuroradiol ; 33(3): 701-708, 2023 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-36856786

RESUMEN

INTRODUCTION: Combined stent-retriever/large-bore distal aspiration catheter (LB-DAC) thrombectomy was recently introduced to treat large-vessel occlusion; however, it is unclear whether larger inner diameters improve outcomes. We compared angiographic and clinical outcomes in patients with occlusions of the M1 segment of the middle cerebral artery treated with mechanical thrombectomy using extra-LB-DAC versus LB-DAC in combination with stent-retrievers. METHODS: We analyzed consecutive patients with M1 occlusion included in the ROSSETTI registry treated with non-balloon guide catheter combined LB-DAC/stent-retriever thrombectomy between June 2019 and April 2022. We compared demographics, baseline clinical variables, procedural variables, angiographic outcomes, and clinical outcomes [National Institute of Health Stroke Scale score at 24 h (24h-NIHSS) and modified Rankin scale score at 3 months] between patients treated with extra-LB-DAC (Sofia Plus, MIVI Q6, Catalyst7; inner diameter, 0.068″-0.070″) versus LB-DAC (Sofia 5F, MIVI Q5, Catalyst 6; inner diameter, 0.055″-0.064″). Primary outcome was the first-pass effect (FPE) rate, defined as near-complete/complete reperfusion (mTICI 2c-3) after a single pass of the device. RESULTS: We included 324 patients (extra-LB-DAC, 185, 57.1% patients). Demographics, clinical data, and clinical outcomes were similar between the two groups; however, there was a trend towards improvement in National Institute of Health Stroke Scale score at 24 h (24h-NIHSS) in the cohort treated with extra-LB-DAC 9 points (IQR 4;16 points) vs. 12 points (IQR 4;18 points, P = 0.083). Patients treated with extra-LB-DAC had higher FPE rate (47% vs. 30.9%; P = 0.003) and higher modified FPE (mTICI ≥ 2b after a single pass) rate (65.9% vs 46.8%; P = 0.001). The use of extra-LB-DAC was an independent factor in predicting FPE (odds ratio 1.982, 95% confidence interval 1.250-3.143, P = 0.004). CONCLUSION: Our results suggest that in combined LB-DAC/stent-retriever thrombectomy, a larger aspiration catheter inner diameter is associated with higher rates of FPE and mFPE.


Asunto(s)
Isquemia Encefálica , Procedimientos Endovasculares , Accidente Cerebrovascular Isquémico , Accidente Cerebrovascular , Humanos , Isquemia Encefálica/terapia , Procedimientos Endovasculares/métodos , Resultado del Tratamiento , Accidente Cerebrovascular/diagnóstico por imagen , Accidente Cerebrovascular/cirugía , Trombectomía/métodos , Accidente Cerebrovascular Isquémico/etiología , Catéteres , Angiografía Cerebral , Stents/efectos adversos , Estudios Retrospectivos
3.
Radiología (Madr., Ed. impr.) ; 62(5): 392-399, sept.-oct. 2020. ilus, tab
Artículo en Español | IBECS | ID: ibc-199818

RESUMEN

OBJETIVO: El objetivo es determinar la utilidad de la angio-TC cerebral en la caracterización de las malformaciones arteriovenosas (MAV) cerebrales con presentación hemorrágica comparada con la angiografía por sustracción digital (DSA) como patrón de referencia. MATERIAL Y MÉTODOS: Se realizó un análisis retrospectivo de una base de datos prospectiva de pacientes con sangrado intracraneal debido a una MAV cerebral desde enero de 2007 hasta diciembre de 2012. Se revisaron variables radiológicas, como las características de la malformación (tamaño, localización, presencia de drenaje venoso profundo), afectación de un área elocuente y presencia de aneurismas relacionados. Dos neurorradiólogos ciegos a cualquier información clínico-radiológica analizaron por consenso las imágenes de tomografía computarizada y DSA. RESULTADOS: Veintidós pacientes fueron incluidos en el estudio. La angio-TC clasificó correctamente 15 de los 16 casos de MAV menores de 3cm, con una sensibilidad del 93,75%. Todos los casos con drenaje venoso profundo y localizados en un área elocuente fueron correctamente detectados (sensibilidad 100%). La presencia de cualquier tipo de aneurisma relacionado con la MAV fue detectada en 13 de 15 pacientes (sensibilidad 86,6%); 7 de 9 en los intranidales (sensibilidad 77,78%) y 6 de 9 de los aneurismas de flujo (sensibilidad 66,67%). CONCLUSIÓN: La angio-TC tiene una alta sensibilidad en la caracterización de MAV cerebrales en cuanto al tamaño menor de 3cm, localización en área elocuente, presencia de drenaje venoso profundo y la detección de cualquier aneurisma relacionado con la MAV. Sin embargo, la angio-TC tiene una menor sensibilidad en la detección de aneurismas intranidales y de flujo relacionados con la MAV


OBJECTIVE: To compare the usefulness of CT angiography against the gold standard, digital subtraction angiography (DSA), in the characterization of cerebral arteriovenous malformations (AVM) that present with bleeding. MATERIAL AND METHODS: We retrospectively analyzed patients with intracranial bleeding due to an AVM who were included in a prospective database in the period comprising January 2007 through December 2012. We reviewed radiologic variables such as the characteristics of the AVM (size, location, presence of deep venous drainage), involvement of eloquent areas, and the presence of associated aneurysms. Two neuroradiologists blinded to clinical and radiological information analyzed the CT and DSA in consensus. RESULTS: A total of 22 patients were included in the study. CT angiography correctly classified 15 of the 16 cases of AVM measuring less than 3cm (93.75% sensitivity). All cases of deep venous drainage and all those located in eloquent areas were correctly detected (100% sensitivity). The presence of any type of aneurysm related with the AVM was detected in 13 of 15 cases (86.6% sensitivity); 7 of 9 of the intranidal aneurysms were detected (77.78% sensitivity), as were 6 of the 9 flow aneurysms (66.67% sensitivity). CONCLUSION: CT angiography is highly sensitive in the characterization of cerebral AVMs measuring less than 3cm, of those located in eloquent areas, and of those with deep venous drainage; it is also highly sensitive in detecting aneurysms related with AVMs. However, CT angiography is less sensitive in detecting intranidal and flow aneurysms related with AVMs


Asunto(s)
Humanos , Masculino , Femenino , Adulto , Persona de Mediana Edad , Angiografía por Tomografía Computarizada/métodos , Malformaciones Arteriovenosas Intracraneales/diagnóstico por imagen , Angiografía de Substracción Digital/métodos , Hemorragia Cerebral/diagnóstico por imagen , Técnica de Sustracción , Estudios Retrospectivos , Sensibilidad y Especificidad , Procedimientos Endovasculares/métodos , Análisis Costo-Beneficio
4.
Radiologia (Engl Ed) ; 62(5): 392-399, 2020.
Artículo en Inglés, Español | MEDLINE | ID: mdl-32178881

RESUMEN

OBJECTIVE: To compare the usefulness of CT angiography against the gold standard, digital subtraction angiography (DSA), in the characterization of cerebral arteriovenous malformations (AVM) that present with bleeding. MATERIAL AND METHODS: We retrospectively analyzed patients with intracranial bleeding due to an AVM who were included in a prospective database in the period comprising January 2007 through December 2012. We reviewed radiologic variables such as the characteristics of the AVM (size, location, presence of deep venous drainage), involvement of eloquent areas, and the presence of associated aneurysms. Two neuroradiologists blinded to clinical and radiological information analyzed the CT and DSA in consensus. RESULTS: A total of 22 patients were included in the study. CT angiography correctly classified 15 of the 16 cases of AVM measuring less than 3cm (93.75% sensitivity). All cases of deep venous drainage and all those located in eloquent areas were correctly detected (100% sensitivity). The presence of any type of aneurysm related with the AVM was detected in 13 of 15 cases (86.6% sensitivity); 7 of 9 of the intranidal aneurysms were detected (77.78% sensitivity), as were 6 of the 9 flow aneurysms (66.67% sensitivity). CONCLUSION: CT angiography is highly sensitive in the characterization of cerebral AVMs measuring less than 3cm, of those located in eloquent areas, and of those with deep venous drainage; it is also highly sensitive in detecting aneurysms related with AVMs. However, CT angiography is less sensitive in detecting intranidal and flow aneurysms related with AVMs.


Asunto(s)
Angiografía de Substracción Digital , Angiografía Cerebral , Angiografía por Tomografía Computarizada , Malformaciones Arteriovenosas Intracraneales/diagnóstico por imagen , Adulto , Femenino , Humanos , Malformaciones Arteriovenosas Intracraneales/complicaciones , Hemorragias Intracraneales/etiología , Masculino , Persona de Mediana Edad , Estudios Retrospectivos
5.
Radiología (Madr., Ed. impr.) ; 61(2): 143-152, mar.-abr. 2019. ilus, tab
Artículo en Español | IBECS | ID: ibc-185124

RESUMEN

Objetivo: El tratamiento endovascular con dispositivos de trombectomía mecánica demostró altos índices de recanalización, si bien el resultado funcional no guardó relación con los altos índices de recanalización obtenidos. La selección de los pacientes previa al tratamiento endovascular es muy importante en el resultado final de estos pacientes. El objetivo principal de nuestro estudio fue hacer una valoración del valor pronóstico de la escala ASPECTS (Escala Precoz por TC del Programa de ACV de Alberta) y del índice puente-mesencéfalo (IPM) en pacientes con oclusiones de la arteria basilar (OAB) sometidos, con éxito, a recanalización angiográfica tras trombectomía mecánica. Métodos: Este estudio retrospectivo de un único centro incluyó 18 pacientes entre los años 2008 y 2013 con oclusiones de la arteria basilar que fueron sometidos a tratamiento endovascular dentro de las 24 horas siguientes al inicio de los síntomas y con una exitosa recanalización angiográfica. Inicialmente, los pacientes fueron clasificados en dos grupos según el resultado clínico y la mortalidad a los 90 días. Para el análisis, los pacientes también fueron divididos en grupos de imágenes utilizando, para ello, la escala ASPECTS-CP (≥8 vs.<8) y el IPM (≥3 vs. <3) mediante tomografías computarizadas sin contraste (TCSC) e imágenes fuente de la angio-TC (IFATC). Los datos de las imágenes se compararon tanto con los resultados clínicos como con la tasa de mortalidad. Resultados: La escala ASPECTS-CP mediante IFATC, dicotomizada a <8 vs. ≥8, se asoció a un resultado favorable (riesgo relativo [RR]: 2,6; intervalo de confianza [IC] del 95%: 1,3-5,2), así como a un menor riesgo de mortalidad (RR: 6,5; IC del 95%: 7,8-23,3). La puntuación en la escala ASPECTS-CP de todos los pacientes que sobrevivieron y fueron funcionalmente independientes fue igual o superior a 8. Ninguno de los cinco pacientes con puntuaciones en la escala ASPECTS-CP mediante IFATC por debajo de 8 sobrevivió. Conclusión: La escala ASPECTS-CP mediante IFATC sirve de ayuda a la hora de predecir el resultado funcional tras recanalización de la OAB mediante tratamiento endovascular. Estos resultados deberían ser validados en un ensayo controlado aleatorizado para decidir si tratar, o no, a un paciente con OAB


Purpose: Endovascular treatment with mechanical thrombectomy devices demonstrated high recanalization rates but functional outcome did not correlate with high rates of recanalization obtained. Patient selection prior to the endovascular treatment is very important in the final outcome of the patient. The primary aim of our study was to evaluate the prognostic value of posterior circulation Alberta Stroke Program Early CT Score (pc-ASPECTS) and Pons-Midbrain Index (PMI) scores in patients with Basilar Artery Occlusion (BAO) treated with successful angiographic recanalization after mechanical thrombectomy. Methods: Retrospective single-center study including 18 patients between 2008 and 2013 who had acute basilar artery occlusion managed with endovascular treatment within 24hours from symptoms onset and with successful angiographic recanalization. The patients were initially classified into two groups according to clinical outcome and mortality at 90 days. For analysis we also divided patients into groups based on pc-ASPECTS (≥8vs.<8) and PMI (≥3vs.<3) on non-contrast CT (NCCT) and CT Angiography Source Images (CTASI). Imaging data were correlated to clinical outcome and mortality rate. Results: CTASI pc-ASPECTS, dichotomized at <8 versus≥8, was associated with a favorable outcome (RR: 2.6; 95% CI: 1.3-5.2) and a reduced risk of death (RR: 6.5: 95% CI: 7.8-23.3). All patients that survived and were functionally independent had pc-ASPECTS score≥8. None of the 5 patients with CTASI pc-ASPECTS score less than 8 survived. Conclusion: PC-ASPECTS on CTASI is helpful for predicting functional outcome after BAO recanalization with endovascular treatment. These results should be validated in a randomized controlled trial in order to decide whether or not to treat a patient with BAO


Asunto(s)
Humanos , Masculino , Femenino , Persona de Mediana Edad , Anciano , Anciano de 80 o más Años , Trombectomía/métodos , Procedimientos Endovasculares/métodos , Tomografía Computarizada por Rayos X/métodos , Arteria Basilar/diagnóstico por imagen , Arteriopatías Oclusivas/diagnóstico por imagen , Resultado del Tratamiento , Estudios Retrospectivos , Angiografía/métodos , Biomarcadores/análisis , Mesencéfalo/diagnóstico por imagen
6.
Radiologia (Engl Ed) ; 61(2): 143-152, 2019.
Artículo en Inglés, Español | MEDLINE | ID: mdl-30616862

RESUMEN

PURPOSE: Endovascular treatment with mechanical thrombectomy devices demonstrated high recanalization rates but functional outcome did not correlate with high rates of recanalization obtained. Patient selection prior to the endovascular treatment is very important in the final outcome of the patient. The primary aim of our study was to evaluate the prognostic value of posterior circulation Alberta Stroke Program Early CT Score (pc-ASPECTS) and Pons-Midbrain Index (PMI) scores in patients with Basilar Artery Occlusion (BAO) treated with successful angiographic recanalization after mechanical thrombectomy. METHODS: Retrospective single-center study including 18 patients between 2008 and 2013 who had acute basilar artery occlusion managed with endovascular treatment within 24hours from symptoms onset and with successful angiographic recanalization. The patients were initially classified into two groups according to clinical outcome and mortality at 90 days. For analysis we also divided patients into groups based on pc-ASPECTS (≥8vs.<8) and PMI (≥3vs.<3) on non-contrast CT (NCCT) and CT Angiography Source Images (CTASI). Imaging data were correlated to clinical outcome and mortality rate. RESULTS: CTASI pc-ASPECTS, dichotomized at <8 versus≥8, was associated with a favorable outcome (RR: 2.6; 95% CI: 1.3-5.2) and a reduced risk of death (RR: 6.5: 95% CI: 7.8-23.3). All patients that survived and were functionally independent had pc-ASPECTS score≥8. None of the 5 patients with CTASI pc-ASPECTS score less than 8 survived. CONCLUSION: PC-ASPECTS on CTASI is helpful for predicting functional outcome after BAO recanalization with endovascular treatment. These results should be validated in a randomized controlled trial in order to decide whether or not to treat a patient with BAO.


Asunto(s)
Angiografía por Tomografía Computarizada , Procedimientos Endovasculares , Trombolisis Mecánica , Insuficiencia Vertebrobasilar/cirugía , Anciano , Anciano de 80 o más Años , Procedimientos Endovasculares/mortalidad , Femenino , Humanos , Masculino , Trombolisis Mecánica/mortalidad , Persona de Mediana Edad , Selección de Paciente , Pronóstico , Estudios Retrospectivos , Tiempo de Tratamiento , Resultado del Tratamiento , Insuficiencia Vertebrobasilar/diagnóstico por imagen , Insuficiencia Vertebrobasilar/mortalidad
7.
AJNR Am J Neuroradiol ; 39(1): 107-110, 2018 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-29170266

RESUMEN

BACKGROUND AND PURPOSE: Endovascular therapy has become the standard of care for patients with disabling anterior circulation ischemic stroke due to proximal intracranial thrombi. Our aim was to determine whether the beneficial effect of endovascular treatment on functional outcome could be explained by a reduction in posttreatment infarct volume in the Endovascular Revascularization With Solitaire Device Versus Best Medical Therapy in Anterior Circulation Stroke Within 8 Hours (REVASCAT) trial. MATERIALS AND METHODS: The REVASCAT trial was a multicenter randomized open-label trial with blinded outcome evaluation. Among 206 enrolled subjects (endovascular treatment, n = 103; control, n = 103), posttreatment infarct volume was measured in 204 subjects. Posttreatment infarct volumes were compared with treatment assignment and recanalization status. Appropriate statistical models were used to assess the relationship among baseline clinical and imaging variables, posttreatment infarct volume, the 24-hour NIHSS score, and functional status with the 90-day modified Rankin Scale score. RESULTS: The median posttreatment infarct volume in all subjects was 23.7 mL (interquartile range = 68.9 mL) and 16.3 mL (interquartile range = 50.2 mL) in the endovascular treatment arm and 38.6 mL (interquartile range = 74.9 mL) in the control arm (P = .02 for endovascular treatment versus control subjects). Baseline NIHSS (P < .01), site of occlusion (P < .03), baseline NCCT ASPECTS (P < .01), and recanalization status (P = .02) were independently associated with posttreatment infarct volume. Baseline NIHSS (P < .01), time from symptom onset to randomization (P = .02), treatment type (P = .04), and recanalization status (P < .01) were independently associated with the 24-hour NIHSS scores. The 24-hour NIHSS score strongly mediated the relationship between treatment type and 90-day mRS (P < .01 for indirect effect when adjusted for age), while posttreatment infarct volume did not (P = .26). CONCLUSIONS: Endovascular treatment saves brain and improves 90-day clinical outcomes primarily through a beneficial effect on the 24-hour stroke severity.


Asunto(s)
Revascularización Cerebral/métodos , Accidente Cerebrovascular/patología , Accidente Cerebrovascular/terapia , Anciano , Anciano de 80 o más Años , Procedimientos Endovasculares/métodos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Resultado del Tratamiento
8.
AJNR Am J Neuroradiol ; 36(8): 1407-12, 2015 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-25882287

RESUMEN

BACKGROUND AND PURPOSE: The incidence and significance of perfusion abnormalities on brain imaging in patients with lacunar infarct are controversial. We studied the diagnostic yield of CTP and the type of perfusion abnormalities in patients presenting with a lacunar syndrome and in those with MR imaging-confirmed lacunar infarcts. MATERIALS AND METHODS: A cohort of 33 patients with lacunar syndrome underwent whole-brain CTP on admission. Twenty-eight patients had an acute ischemic lesion at follow-up MR imaging; 16 were classified as lacunar infarcts. Two independent readers evaluated NCCT and CTP to compare their diagnostic yield. In patients with DWI-confirmed lacunar infarcts and visible deficits on CTP, the presence of mismatch tissue was measured by using different perfusion thresholds. RESULTS: The symptomatic acute lesion was seen on CTP in 50% of patients presenting with a lacunar syndrome compared with only 17% on NCCT, and in 62% on CTP compared with 19% on NCCT, respectively, in patients with DWI-confirmed lacunar infarcts. CTP was more sensitive in supratentorial than in infratentorial lesions. In the nonblinded analysis, a perfusion deficit was observed in 12/16 patients with DWI-confirmed lacunar infarcts. The proportion of mismatch tissue was similar in patients with lacunar infarcts or nonlacunar strokes (32% versus 36%, P = .734). CONCLUSIONS: Whole-brain CTP is superior to NCCT in identifying small ischemic lesions, including lacunar infarcts, in patients presenting with a lacunar syndrome. Perfusion deficits and mismatch are frequent in lacunar infarcts, but larger studies are warranted to elucidate the clinical significance of these CTP findings.


Asunto(s)
Angiografía Cerebral/métodos , Imagen de Perfusión/métodos , Accidente Vascular Cerebral Lacunar/patología , Accidente Vascular Cerebral Lacunar/fisiopatología , Tomografía Computarizada por Rayos X/métodos , Enfermedad Aguda , Anciano , Encéfalo/diagnóstico por imagen , Encéfalo/fisiopatología , Femenino , Humanos , Procesamiento de Imagen Asistido por Computador , Masculino , Persona de Mediana Edad , Flujo Sanguíneo Regional
9.
Ann Biomed Eng ; 43(1): 154-67, 2015 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-25118668

RESUMEN

Validation studies are prerequisites for computational fluid dynamics (CFD) simulations to be accepted as part of clinical decision-making. This paper reports on the 2011 edition of the Virtual Intracranial Stenting Challenge. The challenge aimed to assess the reproducibility with which research groups can simulate the velocity field in an intracranial aneurysm, both untreated and treated with five different configurations of high-porosity stents. Particle imaging velocimetry (PIV) measurements were obtained to validate the untreated velocity field. Six participants, totaling three CFD solvers, were provided with surface meshes of the vascular geometry and the deployed stent geometries, and flow rate boundary conditions for all inlets and outlets. As output, they were invited to submit an abstract to the 8th International Interdisciplinary Cerebrovascular Symposium 2011 (ICS'11), outlining their methods and giving their interpretation of the performance of each stent configuration. After the challenge, all CFD solutions were collected and analyzed. To quantitatively analyze the data, we calculated the root-mean-square error (RMSE) over uniformly distributed nodes on a plane slicing the main flow jet along its axis and normalized it with the maximum velocity on the slice of the untreated case (NRMSE). Good agreement was found between CFD and PIV with a NRMSE of 7.28%. Excellent agreement was found between CFD solutions, both untreated and treated. The maximum difference between any two groups (along a line perpendicular to the main flow jet) was 4.0 mm/s, i.e. 4.1% of the maximum velocity of the untreated case, and the average NRMSE was 0.47% (range 0.28-1.03%). In conclusion, given geometry and flow rates, research groups can accurately simulate the velocity field inside an intracranial aneurysm-as assessed by comparison with in vitro measurements-and find excellent agreement on the hemodynamic effect of different stent configurations.


Asunto(s)
Hidrodinámica , Aneurisma Intracraneal/fisiopatología , Modelación Específica para el Paciente , Stents , Circulación Cerebrovascular , Simulación por Computador , Hemodinámica , Humanos , Reproducibilidad de los Resultados
10.
Acta pediatr. esp ; 72(4): e133-e140, abr. 2014. ilus
Artículo en Español | IBECS | ID: ibc-122061

RESUMEN

Presentamos el caso clínico de un lactante varón de 12 meses de edad, con antecedentes de episodios recurrentes de fiebre, tos y dificultad respiratoria; en la radiografía de tórax presentaba una imagen persistente de consolidación alveolar en el lóbulo superior derecho. Se valoraron las diferentes posibilidades diagnósticas, así como el plan de actuación. Finalmente, en este paciente se detectó la presencia de un bronquio traqueal, considerado una variante anatómica, generalmente asintomática, aunque puede manifestarse como infecciones recurrentes, como en este caso, y también puede asociarse a otras malformaciones congénitas. El manejo terapéutico es conservador, mediante fisioterapia respiratoria y tratamiento de la inflamación e infección, aunque en ocasiones es necesaria la cirugía. Muchas anomalías congénitas bronquiales son infrecuentes y asintomáticas, por lo que pueden pasar desapercibidas. Sin embargo, ante la cronicidad o recurrencia de los procesos respiratorios, hay que descartar su existencia. La detección precoz de estas malformaciones con técnicas adecuadas puede evitar una evolución a la cronicidad y condicionar la actitud terapéutica. Generalmente no precisan tratamiento pero algunos casos requieren un manejo específico más agresivo (AU)


We report the case of a 12 month old boy who suffered recurrent episodes of fever, cough and respiratory distress and evidence of a persistent image of alveolar consolidation in the right upper lobe on chest radiography. We discuss the differential diagnosis list and the management of the case. Finally, we detect in our patient the presence of a tracheal bronchus. Thracheal bronchus is considered an anatomical variant, usually asymptomatic, but can show up with recurrent infections as occurred in our patient. It may also be associated with other congenital malformations. The conservative treatment is the best choice and consists in chest physiotherapy and the treatment of inflammation and infection. The need for surgery is uncommon. Most of the congenital bronchial abnormalities may go unnoticed because they are normally asymptomatic. However, in chronic or recurrent respiratory processes they must be ruled out. The early detection of these malformations can prevent the appearance of chronic lung diseases and can allow for the best therapeutic approach. Although most of the cases do not require treatment, some of them require specific and more aggressive handling (AU)


Asunto(s)
Humanos , Masculino , Lactante , Trastornos Respiratorios/etiología , Neumonía/diagnóstico , Anomalías del Sistema Respiratorio/diagnóstico , Diagnóstico Diferencial , Diagnóstico Precoz
13.
Pharmacology ; 90(3-4): 169-76, 2012.
Artículo en Inglés | MEDLINE | ID: mdl-22948792

RESUMEN

We investigated the mechanisms involved in the 5-hydroxytriptaminergic inhibitory action on the pressor responses elicited by sympathostimulation in long-term-diabetic pithed rats. Diabetes was induced in rats by alloxan administration. Eight weeks later, the animals were anaesthetized and pithed. The action and mechanisms of 5-HT were analysed based on the pressor responses induced by sympathostimulation. In 8-week-diabetic animals, 5-HT (20 µg/kg/min) inhibits the pressor effect of sympathostimulation which is reproduced by two selective 5-HT(1A) and 5-HT(2) receptor agonists: 8-hydroxydipropylaminotetralin hydrobromide (8-OH-DPAT, 5 µg/kg/min) and α-methyl-5-HT (5 µg/kg/min). A bolus injection of 1H-[1,2,4] oxadiazolo[4,3-a] quinoxalin-1-one (ODQ, 10 µg/kg), or L-arginine HCl, N(ω)-L-arginine methyl ester hydrochloride (L-NAME, 10 mg/kg), an inhibitor of NO production, prior to the infusion of 8-OH-DPAT (5 µg/kg/min) reversed the inhibitory effect of 8-OH-DPAT. The inhibitory effect of infusion of α-methyl 5-HT (5 µg/kg/min) was abolished in the presence of indomethacin (2 mg/kg), a non-selective cyclooxygenase (COX) inhibitor, or FR 122047 (1.5 mg/kg) or nimesulide (1.5 mg/kg), two selective COX-1 and COX-2 inhibitors, respectively, in long-term-diabetic pithed rats. Our results indicate that 5-HT inhibition of the pressor responses induced by electrical stimulation is mediated both by the NO and COX pathways in long-term-diabetic rats.


Asunto(s)
Presión Sanguínea/efectos de los fármacos , Diabetes Mellitus Experimental/fisiopatología , Óxido Nítrico/fisiología , Prostaglandina-Endoperóxido Sintasas/fisiología , Serotonina/farmacología , 8-Hidroxi-2-(di-n-propilamino)tetralin/farmacología , Aloxano , Animales , Masculino , NG-Nitroarginina Metil Éster/farmacología , Oxadiazoles/farmacología , Piperazinas/farmacología , Ratas , Ratas Wistar , Serotonina/análogos & derivados , Transducción de Señal , Sistema Nervioso Simpático/fisiología , Tiazoles/farmacología
15.
Rev. esp. pediatr. (Ed. impr.) ; 67(5): 241-246, sept.-oct. 2011. tab, ilus
Artículo en Español | IBECS | ID: ibc-101712

RESUMEN

Presentamos el caso de un varón de 9 años de edad, de origen peruano, con antecedentes de tos crónica y expectoración hemoptoica discontinua de tres meses de evolución en el que se detecta un infiltrado pulmonar persistente en la radiografía de tórax. Describimos la norma de actuación con este tipo de pacientes así como la problemática creada en la detección de la causa subyacente del sangrado. La hemoptisis es un signo infrecuente en la práctica pediátrica pero muy angustiante para el paciente y su familia, así como para el médico, para quién supone un reto diagnóstico-terapéutico. Su baja incidencia e n el niño puede llevar a retrasos iniciales en su diagnóstico e incluso a que este signo pase inadvertido. El espectro de entidades patológicas que pueden causarla es muy amplio y habitualmente las más frecuentes son las causas infecciosas, aunque también pueden subyacer otras enfermedades potencialmente graves. Por ello es prioritario conocer su etiología exacta y decidir la consiguiente actitud terapéutica (AU)


We present the case of a 9 year-old child form Peru with a background of chronic cough and discontinuous hemotoxic expectoration of 3 months evolution in which persistent pulmonary infiltrate was detected don the chest x-ray. We describe the action guidelines with this type of patients as well as the problems created in the detection of the underlying cause of bleeding. Hemoptysis is an uncommon sign in the pediatric practice, however it produces much anxiety for the patient and their family, as well as for the physician, for whom it supposes a diagnostic-therapeutic challenge. Its low incidence in the child may lead to initial delays in its diagnosis and this sign may even go unnoticed. The spectrum of pathological conditions that may cause it is very wide and usually the most frequent ones are infectious causes, although there may be other underlying potentially severe diseases. Therefore, it is of priority to know the exact etiology and t decide the consequent therapeutic attitude (AU)


Asunto(s)
Humanos , Masculino , Niño , Hemoptisis/etiología , Enfermedades Pulmonares/diagnóstico , Enfermedades Pulmonares/tratamiento farmacológico , Radiografía Torácica
16.
Rev. esp. pediatr. (Ed. impr.) ; 67(2): 65-70, mar.-abr. 2011. ilus, tab
Artículo en Español | IBECS | ID: ibc-101691

RESUMEN

Presentamos un caso de neumonías de repetición en la misma localización en una niña de 9 años con tos productiva prácticamente diaria. La prueba del sudor fue negativa y la TC de tórax evidenció bronquiectasias localizadas. Las bronquiectasias son la secuela final de un proceso crónico originado por múltiples causas, la mayoría de ellas adquiridas. Aunque su frecuencia se ha reducido en los últimos años, hay que pensar en ellas ante la cronificación y/o recurrencia de algunas patologías respiratorias. Se analiza su etiología, sus síntomas y signos más frecuentes, así como las pruebas complementarias a realizar. El manejo ideal es el específico de la causa subyacente aunque en pocos casos es posible. Se insiste en el tratamiento médico intensivo, reservándose la cirugía en caso de mala respuesta al mismo (AU)


We present a case of repeated pneumonias in the same location in a 9-year old girl with almost daily productive cough. The sweat test was negative and the chest CT scan showed localized bronchiectasis. Bronchiectases are the final sequel of a chronic process originated by multiple causes, most of them acquired. Although their frequency has decreased in recent years, they must be considered when the condition becomes chronic and/or there is recurrence of some respiratory conditions. An analysis is made of its etiology, most frequent symptoms and signs and the complementary test to be conducted. The ideal management is that specific to the underying cause although this is only possible in a few cases. The need for intensive medical treatment is stressed, reserving surgery for when there is poor response to it (AU)


Asunto(s)
Humanos , Femenino , Niño , Bronquiectasia/diagnóstico , Fibrosis Quística/complicaciones , Neumonía/etiología , Tomografía Computarizada por Rayos X
19.
Radiología (Madr., Ed. impr.) ; 49(4): 291-291, jul. 2007. ilus
Artículo en Es | IBECS | ID: ibc-69691

RESUMEN

No disponible


Asunto(s)
Humanos , Adulto , Enfermedad de Fabry
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