Ex Vivo Heart

Coronary perfusion supplies an oxygenated nutrient solution through the heart’s coronary vessels, supporting tissue metabolism after removal from the body. Maintaining this delivery helps preserve viability and allows the heart to continue spontaneous contractions or respond to electrical stimulation. For bioengineering studies, perfusion provides the physiological support needed to observe cardiac behavior under controlled laboratory conditions.

Retaining the heart’s three-dimensional structure and native cellular organization preserves spatial relationships that cell-based experiments do not reproduce. This makes it possible to study cardiac function, biomaterial evaluation, injury, and repair within an intact tissue framework. At the same time, the model remains more controlled than a whole-animal study, helping bioengineers compare these levels of investigation.

Electrical stimulation provides a controlled way to evoke contractions in the perfused organ. Because the tissue retains its native organization, investigators can examine cardiac responses in an intact three-dimensional setting rather than relying only on isolated cells. This capability is useful when evaluating how engineered materials, cardiac drugs, or injury-related changes affect contractile behavior.

After removal from the body, the heart is placed in a controlled perfusion setup where oxygenated nutrient solution is delivered through its coronary vessels. Investigators maintain conditions that preserve metabolism and viability, then examine spontaneous or electrically stimulated contractions. This workflow establishes a functional preparation for cardiac, biomaterial, drug, injury, or repair studies.

The intact organ combines native cardiac architecture with measurable function, allowing researchers to examine how a biomaterial or drug affects the heart in a three-dimensional tissue context. This approach adds structural and functional information that cell-based experiments may not provide, while complementing the broader perspective of whole-animal studies. It is therefore valuable for bioengineering evaluation.

They can be used to investigate injury and repair while preserving the heart’s native three-dimensional context. The platform also supports regenerative strategies based on decellularized scaffolds and engineered tissues. Because these approaches can be examined in an organ-level setting with maintained cardiac function, ex vivo hearts help bioengineers assess how repair-oriented designs relate to the structure and activity of the heart.