Assessment of change in end-tidal CO after fluid challenge as a marker of fluid responsiveness as measured by the aortic velocity time integral in healthy anesthetized mechanically ventilated dogs.

Objective: To evaluate if variation in the end-tidal CO partial pressure (∆Petco) after a fluid challenge could predict fluid responsiveness with a sensitivity of 75% and a specificity of 70% in healthy anesthetized and mechanically ventilated dogs.

Design: Diagnostic accuracy study.

Setting: University hospital.

Feasibility of an electric current stimulator device to assess the sensory response after transversus abdominis plane block in Guinea pigs (Cavia porcellus).

Objective: To assess the feasibility of using an adjustable intensity nerve stimulator for evaluating the sensory response after a transversus abdominis plane (TAP) block in guinea pigs (Cavia porcellus).

Study Design: Prospective, randomized, blinded, experimental crossover study.

Animals: A total of six adult guinea pigs (Cavia porcellus).

Evaluation of cerebral autoregulation in dogs via transcranial color-coded duplex sonography and transient hyperemia testing.

Objective: To evaluate the changes in flow velocities of the middle cerebral artery before and after a carotid compression maneuver using transcranial color-coded duplex sonography (TCCD) in healthy anesthetized dogs under mechanical ventilation.

Design: Prospective study.

Setting: University teaching hospital.

Ultrasound-guided caudal quadratus lumborum block combined with the greater ischiatic notch plane block as motor-protective analgesia for the pelvic limb in dogs.

Objective: To develop an ultrasound-guided caudal quadratus lumborum block (C-QLB) technique in canine cadavers and to compare sensory and motor blockade resulting from the combination of ultrasound-guided greater ischiatic notch (GIN) plane and C-QLB approaches (GIN-CQLB group) versus a lumbosacral plexus (LSP group) approach [combination of lateral pre-iliac (LPI) and parasacral (PS) techniques] in dogs.

Study Design: Descriptive anatomical study and prospective randomized, blinded, experimental crossover trial.

Animals: A total of six canine cadavers and six adult Beagle dogs.

Ultrasound-guided lateral pericapsular hip desensitization of the articular branches of the cranial gluteal nerve: A canine cadaveric study and feasibility study in dogs.

Objective: To develop and assess the feasibility, as a diagnostic block, of an ultrasound-guided lateral pericapsular hip desensitization (L-PHD) technique in dogs.

Study Design: Prospective, randomized, anatomical and feasibility study.

Animals: A total of 11 canine cadavers and eight adult dogs scheduled for acetabular surgical denervation.