A technique for central venous pressure measurement in normal horses.
Abstract: To investigate a technique of central venous pressure (CVP) measurement using a newly developed catheter in healthy adult horses. Methods: Prospective experimental study. Methods: University research facility. Methods: Twenty healthy adult horses. Methods: An equine central venous catheter was inserted into the jugular vein to a length of approximately 80 cm from the mid-cervical region in an attempt to catheterize the pulmonary artery. Pulmonary arterial catheterization was confirmed by echocardiography. Insertion distance and pressure were measured at this location with a disposable manometer. The catheter was then withdrawn until presence in the right atrium was confirmed by echocardiography. Insertion distance and pressure were also measured at this location. The catheter was then withdrawn in 5 cm increments until exiting the jugular insertion site with pressure measured at each location. All pressure measurements were taken with the manometer zero position at the point of the shoulder. Results: Pulmonary artery catheterization was successful in 16 of 20 horses. Mean pulmonary arterial pressure was 23.8 cm H2O (17.5 mm Hg) (95% confidence interval [CI] 20.9-26.7 cm H2O [15.4-19.6 mm Hg]). Mean right atrial pressure was 8.3 cm H2O (6.1 mm Hg) (95% CI 7.1-9.4 cm H2O [5.2-6.9 mm Hg]). Right atrial pressure was compared with pressures recorded at sequential insertion distances and resulted in a recommendation for catheter insertion of at least 40 cm for CVP measurement in adult horses. Jugular venous pressure measurement was statistically different from CVP measurement. Conclusions: This catheter measurement technique is well tolerated in normal horses. Routine clinical use of this equine central venous catheter may improve our ability to monitor patients and improve patient care and outcomes of ill horses in hospital.
Publication Date: 2009-08-21 PubMed ID: 19691508DOI: 10.1111/j.1476-4431.2009.00420.xGoogle Scholar: Lookup
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- Journal Article
Summary
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The article presents an experimental study aimed at exploring a technique for measuring central venous pressure (CVP) using a novel catheter in healthy adult horses.
Research Setup
- This study was designed as a prospective experimental, conducted within a University research facility.
- The research sample consisted of twenty healthy adult horses.
- A newly developed equine central venous catheter was employed for the study. This was inserted into the jugular vein to a distance of about 80 cm from the mid-cervical region with the aim of catheterizing the pulmonary artery.
- The catheter placement in the pulmonary artery was confirmed through echocardiography.
- The insertion distance and pressure at this point were measured using a disposable manometer. The catheter was then withdrawn back to the right atrium, which was also confirmed by echocardiography.
- The insertion distance and pressure were also measured at this location. After this, the catheter was further withdrawn in 5 cm increments, with pressure measurements taken at each location.
- All pressure measurements were taken with the manometer zero position at the point of the horse’s shoulder.
Results and Findings
- The researchers were successful in catheterizing the pulmonary artery in sixteen out of the twenty horses that were part of the study.
- The mean pulmonary arterial pressure recorded was 23.8 cm H2O (or 17.5 mm Hg) and the mean right atrial pressure was 8.3 cm H2O (or 6.1 mm Hg).
- Comparing right atrial pressure with pressures recorded at sequential insertion distances allowed the researchers to recommend catheter insertion of at least 40 cm to achieve accurate CVP measurement in adult horses.
- Another key finding was that Jugular venous pressure measurement differed considerably from the CVP measurement.
Conclusion
- The new catheter measurement technique was found to be well-tolerated in healthy horses.
- The routine clinical use of this equine central venous catheter could enhance our ability to monitor equine patients, and potentially, improve patient care and outcomes for hospitalized horses.
Cite This Article
APA
Wilsterman S, Hackett ES, Rao S, Hackett TB.
(2009).
A technique for central venous pressure measurement in normal horses.
J Vet Emerg Crit Care (San Antonio), 19(3), 241-246.
https://doi.org/10.1111/j.1476-4431.2009.00420.x Publication
Researcher Affiliations
- Department of Clinical Sciences, Colorado State University, Fort Collins, CO 80523, USA.
MeSH Terms
- Animals
- Catheterization, Central Venous / instrumentation
- Catheterization, Central Venous / methods
- Catheterization, Central Venous / veterinary
- Central Venous Pressure / physiology
- Female
- Horses / physiology
Citations
This article has been cited 2 times.- Nossaman BD, Scruggs BA, Nossaman VE, Murthy SN, Kadowitz PJ. History of right heart catheterization: 100 years of experimentation and methodology development. Cardiol Rev 2010 Mar-Apr;18(2):94-101.
- Brito PHS, Ferreira MA, Rusch E, Arantes JA, Carregaro AB, Valadão CAA, Ghantous GF, Dória RGS. Anesthesia for non-obstetric surgery during late term pregnancy in mares. PLoS One 2024;19(11):e0313563.
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