Performance of the Parasympathetic Tone Activity (PTA) index to predict changes in mean arterial pressure in anaesthetized horses with different health conditions

The parasympathetic tone activity (PTA) index is based on heart rate variability and has been developed recently in animals to assess their relative parasympathetic tone. This study aimed to evaluate PTA index in anaesthetized horses with different health conditions and the performance of PTA variat...

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Bibliographic Details
Published in:Research in veterinary science 2021-10, Vol.139, p.43-50
Main Authors: Mansour, Christelle, Mocci, Rita, Santangelo, Bruna, Sredensek, Jerneja, Chaaya, Rana, Allaouchiche, Bernard, Bonnet-Garin, Jeanne-Marie, Boselli, Emmanuel, Junot, Stéphane
Format: Article
Language:English
Subjects:
Anaesthesia
Anesthesia
Animals
Autonomic nervous system
Blood pressure
Carbon dioxide
Catheters
Colic
Elective surgery
Electrocardiography
Heart rate
Horse
Horses
Hypotension
Life Sciences
Morphine
Nervous system
Parasympathetic nervous system
Parasympathetic tone activity
Performance evaluation
Veterinary medicine
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Summary:The parasympathetic tone activity (PTA) index is based on heart rate variability and has been developed recently in animals to assess their relative parasympathetic tone. This study aimed to evaluate PTA index in anaesthetized horses with different health conditions and the performance of PTA variations (∆PTA) to predict changes in mean arterial pressure (MAP). Thirty-nine client-horses were anaesthetized for elective or colic surgery and divided into “Elective” and “Colic” groups. During anaesthesia, dobutamine was administered as treatment of hypotension (MAP 10% within 5 min. Even though these results require further evaluation, this index may thus help to predict potential autonomic dysfunctions in sick animals. •PTA index, based on heart rate variability, was developed to assess the sympathovagal balance in animals.•Evaluate PTA in anaesthetized horses with different health conditions and its performance to predict changes in mean arterial pressure.•PTA index in anaesthetized horses appears to be influenced by the health condition.•The shift toward lower PTA values in colic horses may reflect a sympathetic predominance.•A PTA increase of >25% in 1 min showed an acceptable performance to predict MAP decrease of >10% within 5 min.
ISSN:0034-5288
1532-2661
0034-5288
DOI:10.1016/j.rvsc.2021.07.005