TBXA2R and hydrops fetalis: These findings suggest that the attenuating effect of daltroban produced when it was injected into the arterial supply of the hindlimb of HF‐rEF rats is most likely attributable to blockade of TxA2‐R on the sensory endings of thin fiber muscle afferents and not systemic effects elsewhere in the EPR arc such as the brainstem and/or the spinal cord.