Background: The use of peripheral intravenous devices can lead to infections and increase the length of hospital care worldwide in humans and animals. Antisepsis is indicated in several ambulatory and surgical procedures. Chlorhexidine is an antiseptic widely used in veterinary clinical practice. Nanoparticle solutions have been studied to improve antimicrobial effect. Therefore, we aimed to evaluate the antiseptic effect of chlorhexidine nanoemulsion at 0,25% (NM-Cl) in cat skin and to compare it with the chlorhexidine commercial solution at 2.0% (CS-Cl). After a wide trichotomy of the thoracic limbs, the skin antisepsis was performed with NM-Cl or CS-Cl and a catheter was inserted at the cephalic vein. Cutaneous microbiota swab samples (CMSS) were obtained before antisepsis (Tpre), immediately after antisepsis (Tpost), and four, eight, and 24 hours after antisepsis. The samples collected were immediately inoculated in blood agar plates and incubated at 35±2ºC in aerobiosis. The manual counting of the colony-forming unit (CFU) was performed 24 hours after inoculation. Kruskal–Wallis and Mann–Whitney tests were used between groups and inside the same group, at different sample times. Result: The NM-Cl and CS-Cl groups showed a reduction in the CFU between the Tpre and Tpost in all animals (p<0.001). Both formulations presented an antiseptic effect 24 hours after antisepsis (p<0.05), and there was no difference between formulations at the different times (p<0.05). Nonetheless, the NM-Cl carried a lowers concentration of chlorhexidine than CS-Cl. Conclusion: The results showed that NM-Cl presents effective antiseptic action and a prolonged residual effect in the cat venipuncture antisepsis. Studies have been carried out to investigate the NM-Cl in veterinary routine.

Intra-abdominal or intrascrotal testicular torsion in dogs occurs due to spermatic cord rotation. Dogs with testicular torsion commonly present severe pain and require surgical intervention. Torsion of intra-abdominal retained testicles in cryptorchid adult dogs is often associated with the presence of testicular neoplasia. Herein, we reported the case of a 5-year-old male poodle with uncommon intra-abdominal testicular torsion (ITT) of a non-neoplastic testicle. The dog was referred to the veterinary hospital with acute abdominal pain in the hypogastric region. An intra-abdominal gonad and alterations compatible with testicular torsion were visualized during ultrasound examination. Orchiectomy and histopathological analysis of the testes confirmed the diagnosis of ITT in the absence of neoplasia. The patient recovered uneventfully from the situation. This report showed that ITT can occur in adult dogs in the absence of testicular neoplasia and reinforce the message that it should be included as a differential diagnosis in cases of acute abdominal pain in cryptorchid dogs. Furthermore, the ultrasound examination in this case of pain in the hypogastric region was decisive for the diagnosis of ITT.