Tissue blood content in anaesthetised sheep and horses.

The research involves studying the distribution of blood in the tissues of anaesthetized horses and sheep using chromium-labeled autologous red blood cells. The findings indicated that half the total blood volume was distributed within the tissues, except in the spleen and fat, which showed similar distribution in both species.

Methodology

• The researchers used eight sheep and three horses for this study, all of which were anaesthetized to prepare them for the procedure.
• All the animals used for this study were injected with chromium-labeled autologous red blood cells. This means the blood cells were taken from the same animal, labeled with a chromium isotope, and then re-injected into the animal. This labeling allows the researchers to track the distribution of these cells within the body.

Findings

• The study found that approximately 50% of an animal’s total blood volume was distributed within the body’s tissues. This refers to the blood present within the body’s organs and not in the blood vessels.
• This distribution was found to be true for both sheep and horses, indicating a similar pattern in these two different species.

Exceptions

• However, two specific tissues showed exceptional results – the spleen and fat tissues.
• It’s not clear from the abstract what the exceptional distribution pattern was for these two tissues, but the results were different from the rest of the body’s tissues.

Implications

• This study contributes to our understanding of blood distribution in the bodies of different animal species. Such understanding is essential for various medical and veterinary applications such as in the diagnosis and treatment of diseases, surgeries, and in estimating the effects of certain drugs on the body.