“…In general, peripheral nerve block offers more hemodynamic stability than a neuraxial block, but again with the caveat that stability is not guaranteed. In a report by Ho et al, 14 moderate doses of vasoconstrictive drug were required to maintain normal blood pressure in their elderly patient with severe AS. Lumbosacral plexus block combinations have a 10% risk of epidural spread, creating a contralateral block with associated sympathectomy.…”