TBXA2R and hydrops fetalis: Moreover, we found that blockade of thromboxane A2 receptors (TxA2‐Rs), a key receptor for cyclooxygenase (COX) metabolites, on sensory endings of thin fiber muscle afferents reduced the sympathetic and cardiovascular responses to hindlimb skeletal muscle stretch in rats with HF‐rEF but not in healthy rats (Butenas, Rollins, et al., 2021).