Pulmonary arterial wedge pressures: blood gas tensions and pH in the resting horse.

This research examines how some characteristics of horse blood can change depending on the location it’s taken from within the horse’s body. The study specifically looks at the partial pressure of carbon dioxide, the partial pressure of oxygen, and the pH levels in the horse’s blood taken from different points inside the animal’s cardiovascular system.

Methodology

• This study involved making blood pressure recordings at several positions within the horse’s body: the right atrium, right ventricle, pulmonary trunk, and the pulmonary arterial “wedge”.
• Throughout this study, the horses were not sedated or tranquilized, and were in a standing, resting state.
• Blood samples were collected from these vascular positions, as well as from the jugular vein and the carotid artery for comparison.

Results

• The study found consistent results when comparing the partial pressure of carbon dioxide, the partial pressure of oxygen, and the pH levels in the blood taken from the various positions.
• These factors were lower in blood samples from the pulmonary arterial wedge compared to those obtained from the carotid artery.

Technique Description

• The study also involved the development and description of a safe and rapid technique to collect pulmonary trunk and pulmonary arterial wedge blood gases, pH, and pressure data using a balloon-tipped flow-directed catheter.
• This technique can be used in adult horses while they are awake and resting, and avoids the need for sedation or tranquilization.

In summary, this research provides information regarding the difference of blood characteristics depending on the location it is taken from within the horse’s cardiovascular system. This knowledge is useful for veterinary medicine and can guide future research and diagnostic techniques.