Person:
Manso Díaz, Gabriel

First Name

Gabriel

Last Name

Manso Díaz

URI

https://hdl.handle.net/20.500.14352/80610

Affiliation

Universidad Complutense de Madrid

Faculty / Institute

Veterinaria

Department

Medicina y Cirugía Animal

Area

Medicina y Cirugía Animal

Identifiers

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Now showing 1 - 10 of 23

Project number: 135
Atlas de endoscopia de las vías respiratorias del caballo
(2016) Fores Jackson, Paloma; López San Román, Francisco Javier; Manso Díaz, Gabriel; Herrán Vilella, Ramón Cayetano; Santiago Llorente, Isabel; Goyoaga Elizalde, Jaime; Ezquerra Calvo, Luis Javier; García López, José Mª
La endoscopia es una técnica diagnóstica y terapéutica, mínimamente invasiva, imprescindible para la clínica equina. Pero además, es una técnica, que al ser altamente visual, es perfecta para fijar y mejorar los conocimientos de anatomía, fisiología y patología, en nuestro caso en concreto, de las vías respiratorias del caballo. Este atlas contiene información básica sobre los aspectos técnicos de la endoscopia respiratoria del caballo y los principales hallazgos fisiológicos y patológicos de la misma.
Project number: 224
Desarrollo de simuladores no virtuales en la docencia de la clínica equina
(2020) López San Román, Francisco Javier; Manso Díaz, Gabriel; Villalba Orero, María; Jiménez Tabasco, Alberto; Sanz Dueñas, Javier; Santiago Llorente, Isabel; Sefrioui Khamali, Zouhair; Varela Del Arco, Marta; Velasco Matesanz, Laura; Martínez Sánchez, Mercedes
El proyecto actual se ha centrado en el desarrollo de modelos no virtuales. La adquisición de habilidades prácticas sigue diferentes pasos en la curva de aprendizaje y, para ello, es necesario partir de un conocimiento de las bases teóricas y observar previamente el procedimiento. Sin embargo, el alumno debe de llevar a cabo el procedimiento por si mismo. En la actualidad esto se realiza con cadáveres y animales vivos, lo cual está limitado por el cada vez más complicado acceso a los primeros y la estricta normativa vigente sobre bienestar animal. Por esta razón, hemos pretendido crear simuladores que suplan las limitaciones actuales. De tal manera, hemos comenzado con la creación de un modelo de artroscopia equina con la articulación radiocarpiana que facilite, por un lado, el entendimiento de la anatomía artroscopia de las articulaciones equinas y, por otro lado, el desarrollo de sus habilidades prácticas.
Magnetic resonance dacryocystography in the horse: A feasibility study
(Veterinary Ophthalmology, 2019) Manso Díaz, Gabriel; García-López, J.M.; López San Román, Francisco Javier; Taeymans, O.
Objective: To provide a comprehensive anatomical description of the normal equine nasolacrimal duct using magnetic resonance imaging, and to develop a practical protocol for performing magnetic resonance dacryocystography (MRD) in horses. Animal studied: The heads of ten fresh horse cadavers with no history of sinonasal or ophthalmologic disorders were used for this study. Procedure: An MRD technique was developed in this study, which consisted of two parts. In the first part, olive oil and gadolinium were compared as contrast medium, using five horses. Two concentrations of gadolinium were used: 0.25 mmol/mL and 0.5 mmol/mL. In the second part, the influence of different head recumbencies using olive oil as the sole contrast medium was studied in the remaining five horses. Results: Injection with olive oil resulted in better distention and a complete filling of the nasolacrimal duct (ND) in all horses. Injection of 0.25 mmol/mL of gadolinium resulted in incomplete filling of the ND, whereas injection of 0.5 mmol/mL of gadolinium resulted in slightly better filling of the duct. The nondependent duct showed better distention compared to the dependent duct when scanning in lateral recumbency. No differences were observed between ducts in a dorsal recumbency. The degree of distention in dorsal recumbency was slightly less than the degree of distention observed in the nondependent ND in lateral recumbency. Conclusions: Magnetic resonance dacryocystography is a suitable technique for evaluating the nasolacrimal duct and can be performed during a normal magnetic resonance examination.
Time‐of‐flight magnetic resonance angiography (TOF‐MRA) of the normal equine head
(Equine Veterinary Journal, 2012) Casteleyn, C.; Taeymans, O.; Manso Díaz, Gabriel; García Real, María Isabel; San Román Ascaso, Fidel
Reasons for performing study: Noncontrast magnetic resonance angiography (MRA) is widely used in human and small animal medicine. However, this technique has not yet been described in the horse, and compared to other angiographic techniques MRA could be more cost efficient and potentially safer. Objectives: The aim of this study was to provide a comprehensive anatomical reference of the normal equine head vasculature using a noncontrast MRA technique, on both low- and high-field MRI. Methods: Five healthy adult horses were examined, 4 with a low-field magnet (0.23T) and the remaining one with a high-field magnet (1.5T). The magnetic resonance angiography sequence used was TOF (time-of-flight) 2D-MRA and CT images of a vascular corrosion cast were subsequently used as anatomical references. Results: The MRA imaging protocol provided good visualisation of all major intra- and extracranial vessels down to a size of approximately 2 mm in diameter on both low- and high-field systems. This resulted in identification of vessels to the order of 3rd-4th branches of ramification. The visibility of the arteries was higher than of the veins, which showed lower signal intensity. Overall, MRA obtained with the high-field protocol provided better visualisation of the arteries, showing all the small arterial branches with a superior resolution. Conclusions: The use of a specific vascular sequence such as TOF 2D-MRA allows good visualisation of the equine head vasculature and eliminates the need for contrast media for MRA. Potential relevance: Magnetic resonance angiography allows for visualisation of the vasculature of the equine head. Vessel morphology, symmetry and size can be evaluated and this may possibly play a role in preoperative planning or characterisation of diseases of the head, such as neoplasia or guttural pouch mycosis.
Ultrasonographic visualisation of the mesenteric vasculature in horses with large colon colic
(Veterinary Record, 2020) Manso Díaz, Gabriel; David M Bolt; López San Román, Francisco Javier
Background: Ultrasonographic visualisation of the mesenteric vasculature of the large colon (LC) from the right side of the abdomen in cases of displacement and volvulus has been described. However, the LC can move freely within the abdomen and its mesentery can potentially contact both sides of the abdominal wall. Methods: Thirty-four horses presented with LC-related colic that had visible LC mesenteric vasculature visible on abdominal ultrasound were included. A control group was made including horses with confirmed small intestinal-related colic. The objective of this study was to evaluate the visibility of LC mesenteric vasculature with transabdominal ultrasonography in horses with LC-related colic and to determine its diagnostic value. Results: The LC mesenteric vasculature was identified on the right side of the abdomen in 16/34 horses with right dorsal displacement of the LC (RDDLC), 180° LC volvulus (LCV), 540° LCV or LC impaction. On the left side of the abdomen, LC mesenteric vessels were identified in 17/34 horses with left dorsal displacement of the LC (LDDLC), 180° LCV or RDDLC. Vessels were visualised on both sides in one horse with a 180° LCV. Presence of LC mesenteric vasculature in the dorsal aspect on the left side of the abdomen was significantly associated with LDDLC. Conclusion: LC mesenteric vasculature can be visualised on transabdominal ultrasound from either side of the abdomen in horses with different forms of LC-related colic.
Ultrasound-guided modified subcostal transversus abdominis plane block in a foal undergoing omphalectomy
(Equine Veterinary Education, 2023) López Ramis, Víctor; Santiago Llorente, Isabel; Manso Díaz, Gabriel; Canfrán Arrabe, Susana; Álvarez Gómez De Segura, Ignacio
A 7-day-old, 60 kg, Purebred Spanish Horse filly was referred with the mare to Complutense University of Madrid, Veterinary teaching hospital for elective omphalectomy. Upon admission, clinical examination was unremarkable except for a thickening of the umbilical area. Haematology and biochemistry values were within the normal range. On abdominal ultrasound (US) examination, a well-defined, rounded (24 mm of diameter) area that contained heterogeneous material with numerous hyperechoic foci with acoustic shadowing was seen within the inner portion of the umbilical pedicle, between both umbilical arteries. Surgical correction with omphalectomy was scheduled. To provide perioperative analgesia, the transversus abdominis plane (TAP) block was considered. Under general anaesthesia, TAP block was performed in both left and right hemi-abdominal walls with a modified subcostal approach with two-site injections. A spinal needle was inserted under US guidance. During surgery, end-tidal concentration of isoflurane was maintained at 0.7%–0.9%. Surgery was completed uneventfully and no signs of nociceptive input were observed, suggesting an adequate level of analgesia. Therefore, this TAP block technique may be considered to provide analgesia for surgical procedures involving the abdominal wall in foals.
Project number: 277
Comparación de diferentes herramientas para el estudio de las técnicas avanzadas de diagnóstico por imagen en el caballo
(2023) Manso Díaz, Gabriel; López San Román, Francisco Javier; Villalba Orero, María; Hernández Muñoz, Óscar; Iglesias García, Manuel; Ortiz Cano, Juan Ramón; Izquierdo Moreno, Jorge; Sterp Moga, Emmanuel; Lapeña García, Paula; González Puerta, Emma
Magnetic resonance imaging characteristics of equine head disorders: 84 cases (2000–2013)
(Veterinary Radiology and Ultrasound, 2014) Manso Díaz, Gabriel; García Real, María Isabel; San Román Ascaso, Fidel; Dyson, Sue J.; Dennis, Ruth; García‐López, José M.; Biggi, Marianna; Taeymans, Olivier
The equine head is an anatomically complex area, therefore advanced tomographic imaging techniques, such as computed tomography or magnetic resonance imaging (MRI), are often required for diagnosis and treatment planning. The purpose of this multicenter retrospective study was to describe MRI characteristics for a large sample of horses with head disorders. Horses imaged over a period of 13 years were recruited. Eighty-four horses met the inclusion criteria, having neurological (n = 65), sinonasal (n = 14), and soft tissue (n = 5) disorders. Magnetic resonance imaging accurately depicted the anatomy and allowed identification of the primary lesion and associated changes. There were good correlations between MRI findings and intraoperative or postmortem results. Magnetic resonance imaging showed the exact localization of the lesions, their size, and relation to surrounding structures. However, in the neurological group, there were 45 horses with no MRI abnormalities, 29 of which had a history of recurrent seizures, related to cryptogenic epilepsy. Magnetic resonance imaging was otherwise a valuable diagnostic tool, and can be used for studying a broad range of head disorders using either low-field or high-field magnets.
The role of head computed tomography in equine practice
(Equine Veterinary Education, 2015) Manso Díaz, Gabriel; García-López, J.M.; Maranda, L.; Taeymans, O.
This retrospective study describes the computed tomography (CT) findings in 59 horses presented with diseases of the head over 8 years that underwent CT examination of this region, including dental or sinonasal diseases (Group A) (n = 42), osseous and/or articular diseases (Group B) (n = 11) and soft tissue diseases (Group C) (n = 6). For Group A, radiographic and CT findings comparison was possible. Computed tomography had higher sensitivity (100%) and specificity (96.7%) than radiography in diagnosing dental disease. Compared to CT, radiographic identification of sinus involvement was less sensitive, particularly for ventral conchal and sphenopalatine sinuses and presented an overall sensitivity of 43.5 and 16.7%, respectively. In Group B CT allowed identification of a higher number of bone fragments and fractures in the maxillary, lacrimal, sphenoidal, temporal and zygomatic bones not identified radiographically. Accurate identification of CT changes in the temporomandibular joint and temporohyoid articulation was also possible. Group C included both intra- and extra-cranial disease, retrobulbar masses being the most representative pathology (n = 3). In this group, CT was considered the gold standard for detection of periorbital diseases. We conclude that CT is an imaging technique with high diagnostic value for evaluating the equine head, yielding additional information over multiple radiographic views, which may alter the outcome of the case. Additionally, this paper reports several conditions not previously described using CT.
Treatments and Prognosis for Subchondral Cystic Lesions in the Distal Extremities in Thoroughbred Prospect Racehorses
(Animals, 2023) Pérez-Nogués, Marcos; López San Román, Francisco Javier; Spirito, Michael; Manso Díaz, Gabriel
Subchondral cystic lesions (SCLs) in equines and their treatments have been mainly studied in the medial femoral condyle of the femur. SCLs in the distal extremities affecting the fetlock or interphalangeal joints are frequent, but treatment or prognosis studies in horses are currently sparse. Our objective was to compare four treatments for SCLs in the distal extremities (intralesional injection of corticosteroids, transcortical drilling, cortical screw placement, and absorbable hydroxyapatite implant placement) and report the racing prognoses for affected thoroughbred yearlings. Data from 113 thoroughbred yearlings treated for SCLs in the distal extremities were collected from 2014 to 2020. Age at surgery, sex, bone affected, radiographic SCL measurements, SCL shape, and type of treatment were recorded. Sale data and racing performance were collected for the operated horses and for 109 maternal siblings that were free of SCLs. An analysis was conducted to assess if SCL size affected racing prognosis and to detect differences in sale value and selected racing parameters between the cases and controls. The outcomes for the different treatments, the different bones affected, and the SCL shape type were also analyzed. There was no difference in the ability to start in a race between the cases and controls (60.2% vs. 69.7%, respectively). The auction value of the treated horses was significantly lower than that of their siblings. The bone affected did not impact any of the racing variables studied, whereas the height of the SCLs negatively affected the number of wins and placed races. The type of treatment for the horses affected by SCLs did not have an impact on sale prices, ability to start a race, race starts, wins, and places, or age at the time of the first start. In conclusion, yearlings diagnosed with an SCL in the distal extremities had lower auction prices and decreased racing performances, with lower numbers of wins correlated with larger SCL heights compared to the siblings. Similar racing performance was found regardless of the treatment received.