TTR and congestive heart failure: Overall, these hemodynamic features of metaboreflex sensitivity in patients with CA-TTR resemble abnormalities displayed by patients with chronic heart failure (Aimo et al., 2021; Barrett-O'Keefe et al., 2018; Crisafulli, 2017; Crisafulli et al., 2007; Ichinose et al., 2012; Kaur et al., 2018a; Kaur et al., 2018b; Piepoli and Crisafulli, 2014; Piepoli et al., 2006).