Cardiac cryolesions in dogs resulted in a consistent decrease in scar depth (p<0.005) and collagen accumulation (p<0.0001) over time, offering a standardized model for myocardial wound healing.
Cardiac cryolesions offer a standardized, less variable experimental model for studying myocardial wound healing compared to traditional coronary ligation.
p-value: p=<0.005
The standard coronary ligation model for experimental myocardial infarction results in variable areas and patterns of necrosis; therefore, the healing of such infarctions is also variable. The authors developed an experimental myocardial injury model using simple cryoinjury, which allows standardization of the size, depth, and location of the wound. Thirty-eight left ventricular cryolesions were created in 19 dogs, which were then killed from 3 to 35 days after injury. A consistent decrease in the depth of scar (p < 0.005) and accumulation of collagen (p < 0.0001) over time characterized this healing myocardial wound. Histologic examination revealed that the cellular pattern of healing myocardial cryolesions is similar to that of a healing myocardial infarction but with less variability. The authors advocate the use of cardiac cryolesions as a model of experimental myocardial wound healing.
Jensen et al. (Tue,) conducted a other in Myocardial wound healing (n=19). Cardiac cryolesions was evaluated on Depth of scar and accumulation of collagen (p=<0.005). Cardiac cryolesions in dogs resulted in a consistent decrease in scar depth (p<0.005) and collagen accumulation (p<0.0001) over time, offering a standardized model for myocardial wound healing.