ACTA1 and hydrops fetalis: A similar trend was found in αSMA levels, which was strongly expressed in hearts from the HF group relative to the sham group (13.90 ± 0.85 vs. 5.07 ± 0.30%, p < 0.05), whereas was weakly expressed in the HF group with CSWT treatment, comparing to those in the HF group without CSWT administration (5.78 ± 0.51 vs. 5.07 ± 0.30%, p < 0.05).