Comparative validation of automated presurgical tractography based on constrained spherical deconvolution and diffusion tensor imaging with direct electrical stimulation.

OBJECTIVES: Accurate presurgical brain mapping enables preoperative risk assessment and intraoperative guidance. This cross-sectional study investigated whether constrained spherical deconvolution (CSD) methods were more accurate than diffusion tensor imaging (DTI)-based methods for presurgical white matter mapping using intraoperative direct electrical stimulation (DES) as the ground truth. METHODS: Five different tractography methods were compared (three DTI-based and two CSD-based) in 22 preoperative neurosurgical patients undergoing surgery with DES mapping. The corticospinal tract (CST, N = 20) and arcuate fasciculus (AF, N = 7) bundles were reconstructed, then minimum distances between tractograms and DES coordinates were compared between tractography methods. Receiver-operating characteristic (ROC) curves were used for both bundles. For the CST, binary agreement, linear modeling, and posthoc testing were used to compare tractography methods while correcting for relative lesion and bundle volumes. RESULTS: Distance measures between 154 positive (functional response, pDES) and negative (no response, nDES) coordinates, and 134 tractograms resulted in 860 data points. Higher agreement was found between pDES coordinates and CSD-based compared to DTI-based tractograms. ROC curves showed overall higher sensitivity at shorter distance cutoffs for CSD (8.5 mm) compared to DTI (14.5 mm). CSD-based CST tractograms showed significantly higher agreement with pDES, which was confirmed by linear modeling and posthoc tests (PFWE < .05). CONCLUSIONS: CSD-based CST tractograms were more accurate than DTI-based ones when validated using DES-based assessment of motor and sensory function. This demonstrates the potential benefits of structural mapping using CSD in clinical practice.

Randomized Controlled Trial to Compare Stapled Hemorrhoidopexy Plus Ligation Anopexy With Stapled Hemorrhoidopexy for Managing Grade III and IV Hemorrhoidal Disease.

BACKGROUND: Despite the benefits of the stapled hemorrhoidopexy in the short term, management of prolapsing hemorrhoids, the long-term results are still insufficient regarding recurrent prolapse and patient satisfaction. The current study investigates the addition of ligation anopexy to stapled hemorrhoidopexy. OBJECTIVE: Valuation of adding ligation anopexy to stapled hemorrhoidopexy in improving short-term and long-term results in the treatment of grade III and IV hemorrhoids. DATA SOURCES: Between January 2018 and January 2020, we recruited 124 patients with grade III and IV hemorrhoids at Alexandria Main University Hospital. STUDY SELECTION: Randomized controlled trial. INTERVENTIONS: One hundred twenty-four patients were blindly randomly assigned to 2 equal groups: stapled hemorrhoidopexy (group I) and stapled hemorrhoidopexy plus ligation anopexy (group II). MAIN OUTCOME MEASURES: Recurrence of hemorrhoids and patient satisfaction after a follow-up period of at least 2 years. RESULTS: The average operating time was noticeably less in the stapled hemorrhoidopexy group. Postoperative pain, analgesia requirement, hemorrhoid symptoms score, return to work, complications rate, and quality of life 1 month after surgery were similar between groups. Following a mean follow-up of 36 months (interval, 24-47), in group I, 10 patients (16%) reported recurrent external swelling and/or prolapse compared to 3 patients (5%) in group II ( p = 0.0368). Five patients in group I required redo surgery, whereas no patients required redo surgery in group II. Long-term patient satisfaction was significantly better in group II. LIMITATIONS: It was a single-center experience, so longer follow-up was needed. CONCLUSIONS: Stapled hemorrhoidopexy and stapled hemorrhoidopexy plus ligation anopexy were similar in short-term results with regard to complications rate, hemorrhoids symptoms score, return to work, and quality of life. Long-term results were significantly better with regard to recurrence of external swelling and/or prolapse and patient satisfaction after stapled hemorrhoidopexy plus ligation anopexy. See Video Abstract . TRIAL REGISTRATION NUMBER: Pan African Clinical Trials Registry identifier PACTR20180100293130. ECA PARA COMPARAR LA HEMORROIDOPEXIA CON GRAPAS MS ANOPEXIA POR LIGADURA CON LA HEMORROIDOPEXIA CON GRAPAS PARA EL TRATAMIENTO DE LA ENFERMEDAD HEMORROIDAL DE GRADO III Y IV: ANTECEDENTES:A pesar de los beneficios de la hemorroidopexia con grapas a corto plazo, el manejo de las hemorroides prolapsadas, los resultados a largo plazo aún son insuficientes en cuanto al prolapso recurrente y la satisfacción del paciente, por lo que en nuestro estudio actual agregamos anopexia por ligadura a la hemorroidopexia con grapas.OBJETIVO:Valoración de añadir anopexia por ligadura a la hemorroidopexia con grapas para mejorar los resultados a corto y largo plazo en el tratamiento de las hemorroides grado III-IV.FUENTES DE DATOS:Entre enero de 2018 y enero de 2020 reclutamos a 124 pacientes con hemorroides de grado III-IV en el hospital universitario principal de Alexandria.SELECCIÓN DEL ESTUDIO:Ensayo controlado aleatorio PACTR201801002931307.INTERVENCIÓN(S):124 pacientes fueron asignados al azar de forma ciega a dos grupos iguales, hemorroidopexia con grapas (grupo I) y hemorroidopexia con grapas más anopexia por ligadura (grupo II).PRINCIPALES MEDIDAS DE RESULTADO:Recurrencia de hemorroides y satisfacción del paciente después de un período de seguimiento de al menos dos años.RESULTADOS:El tiempo operatorio promedio fue notablemente menor en el grupo de hemorroidopexia con grapas. Mientras tanto, el dolor posoperatorio, la necesidad de analgesia, la puntuación de los síntomas de hemorroides, el regreso al trabajo, la tasa de complicaciones y la calidad de vida un mes después de la cirugía fueron similares. Después de un seguimiento medio de 36 meses (intervalo: 24-47), el Grupo I, 10 pacientes (16%) se quejaron de inflamación externa recurrente y/o prolapso en comparación con 3 pacientes (5%) en el Grupo II ( p = 0,0368) que requiere rehacer la cirugía. No fue necesaria una nueva cirugía en el grupo II; además, la satisfacción del paciente a largo plazo fue significativamente mejor en el grupo II.LIMITACIONES:Se necesita un seguimiento más prolongado y experiencia en un solo centro.CONCLUSIONES:La hemorroidopexia con grapas comparada con la hemorroidopexia con grapas más anopexia por ligadura fue similar en resultados a corto plazo en cuanto a tasa de complicaciones, puntuación de síntomas de hemorroides, regreso al trabajo y calidad de vida. Los resultados a largo plazo fueron significativamente mejores en cuanto a la recurrencia de la inflamación externa y/o el prolapso y la satisfacción del paciente después de la hemorroidopexia con grapas más anopexia por ligadura. (Traducción-Dr. Mauricio Santamaria ).