PTA

Following the results of the ANI technology (Analgesia Nociception Index)
on the monitoring of non-communicating patients, an adaptation of the algorithm was performed
to develop the PTA index (Parasympathetic Tone Activity). The PTA technology enables the evaluation
of the parasympathetic part of the autonomic nervous system of animals

The first parasympathetic tone monitoring device in the world for pets

Veterinarians face a challenge when it comes to assessing animal’s surgical stress during surgery due to the absences of clear physiological signs. That’s why we developed a heart rate variability analysis device simple of use, not operator-dependent, based on the acquisition of electrocardiographic (ECG) signal.

The PTA index provides an objective value to veterinarians to evaluate analgesia. The monitor offers a value between 0 and 100 corresponding to the percentage of activity of the parasympathetic part of the Autonomic Nervous System of the animal. The higher the value of the PTA index is the higher the animal’s comfort.

PTA Monitor

Version V1
Brochure Product brochure (EN)

Testimonials

Our technologies are used by top physicians around the world

Dr. Miguel Angel Cabezas

In my opinion, the inclusion of PTA in the monitoring protocol allows us to complete the information and refine the treatment in something as complicated as nociception, thinking not only intraoperatively but also in postoperative pain

Dr. Miguel Angel Cabezas

Head of the Anesthesia at Hospital Veterinario Puchol, Madrid

Dr. Ignacio Álvarez Gómez de Segura

Currently, the clinical assessment method for nociception (intraoperative ‘pain’) is based on simple but basic responses, such as sudden increases in heart and respiratory rates or blood pressure. These responses imply that we are late in providing a good pain reliever and stability plan for our patients. The PTA monitor is a novel approach and a significant advance to detect the presence of nociception, and to anticipate situations where our patients do not have sufficient analgesic coverage.

Dr. Ignacio Álvarez Gómez de Segura

Chef of the Anesthesiology department at Universidad Complutense de Madrid 

Dr. Nacho Sández

The evaluation of the autonomic nervous system during general anesthesia allows for more accurate control of what happens after nociceptive stimuli. The PTA monitor allows me to detect most of the sympathetic responses that occur during surgery, even the ones that are very slight and do not cause major changes in blood pressure and heart rate.

Dr. Nacho Sández

Head of the Anesthesia at Hospital Veterinario VETSIA

Scientific Evidences

Detects noxious stimuli before and more sensitive than HR and BP

  • “Detects noxious stimuli before and more sensitive than HR and BP” – Mansour, C., et al. (2017). Evaluation of the Parasympathetic Tone Activity (PTA) index to assess the analgesia/nociception balance in anaesthetised dogs. Res Vet Sci. 115, 271-277 / LEARN MORE

Efficacy of the Parasympathetic Tone Activity monitor to assess nociception in healthy dogs anaesthetized with propofol and sevoflurane

  • Aguado, D, Bustamante., R., García-Sanz V., González-Blanco. P., Gómez de Segura, IA. (2020). Efficacy of the Parasympathetic Tone Activity monitor to assess nociception in healthy dogs anaesthetized with propofol and sevoflurane. Vet Anaesth Analg. 47 (1), 103-110. Res Vet Sci. 115, 271-277 / LEARN MORE

Videos

Presentation about the PTA (Parasympathetic Tone Activity)