High-definition ultrasonography in the evaluation of the reproductive tract of bitches during the follicular phase of the estrous cycle

Autor(es):Mostrar menos -

Nogueira Aires, Luiz Paulo ^[1] ; Gasser, Beatriz ^[2] ; Silva, Priscila ^[2] ; Da Silva, Priscila Del Aguila ^[1] ; Silveira, Marcus Vinicius ^[2] ; Carneiro, Rafael Kretzer ^[2] ; IwaoYamada, Diego ^[3] ; Padilha-Nakaghi, Luciana Cristina ^[1] ; Ramirez Uscategui, Ricardo Andres ^{[4, 2]} ; Spada, Stefano ^[5] ; Russo, Marco ^[5] ; Rossi Feliciano, Marcus Antonio ^{[1, 2, 6]}

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ Julio de Mesquita Filho FCAV, Sch Agr & Veterinarian Sci, Dept Pathol Reprod & One Hlth, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP - Brazil

^[2] Sao Paulo State Univ Julio de Mesquita Filho FCAV, Sch Agr & Veterinarian Sci, Dept Vet Clin & Surg, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP - Brazil

^[3] Hosp Carlos Fernando Rossato, Coll Dr Francisco Maeda FAFRAM, Ituverava, SP - Brazil

^[4] Fed Univ Jequitinhonha & Mucuri Valleys UFVJM, Inst Agr Sci, Unai, MG - Brazil

^[5] Univ Naples Federico II, Dept Vet Med & Anim Prod, Naples - Italy

^[6] Fed Univ Santa Maria UFSM, Dept Large Anim Clin, Diagnost Imaging Sect, Santa Maria, RS - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Animal Reproduction Science; v. 234, NOV 2021.
• Citações Web of Science: 0

Resumo

The aim was to sonographically evaluate the reproductive tract of bitches during the follicular phase of the estrous cycle using High Density (HD) ultrasonic techniques. Females (n = 8) were evaluated at five different times throughout the follicular phase, as determined by vaginal cytology and blood progesterone concentrations. Ultrasonic exams were performed using the ACUSON S2000/SIEMENS device utilizing a multifrequency HD transducer (5.5-18 MHz). Videos of the ovaries were obtained and recordings were evaluated using a DICOM viewer software for counting and measuring the ovarian structures, which were assigned to groups based on diameter in mm: G1: <= 1; G2: from 1.01 to 3.5; G3 from 3.51 to 5.5; G4: from 5.51 to 10. There was a greater uterine thickness with the progression of the follicular phase (P < 0.05). Six distinct regions were identified in the uterine wall. The ovarian dimensions increased (P < 0.05) as stage of the follicular phase advanced. There was fluid detected around the ovaries after ovulation. There was a characteristic fat tissue hyperechogenicity around the ovaries at all timepoints. There was a difference in the number of ovarian structures of each dimension group at each time there were assessments (P < 0.05). There was a difference in diameter of the largest ovarian structure and in average value of wall thickness at all timepoints when there were evaluations (P < 0.05). The HD ultrasonography technique provides for excellent image resolution, allowing for a more precise characterization of the bitch's reproductive structures and changes occurring during the follicular phase of the estrous cycle. (AU)

• Processo FAPESP: 17/14957-6 - Estudo de novas biotécnicas para reprodução de caninos e pequenos ruminantes
• Beneficiário: Wilter Ricardo Russiano Vicente
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 19/15282-8 - EMU concedido no processo 17/14957-6: Siemens S2000
• Beneficiário: Wilter Ricardo Russiano Vicente
• Modalidade de apoio: Auxílio à Pesquisa - Programa Equipamentos Multiusuários