Autonomic function in patients with familial amyloidotic polyneuropathy and their relatives

Plasma adrenaline and noradrenaline levels were measured while supine and following head-up tilt to 45 degrees, in both normal controls and in patients with familial amyloidotic polyneuropathy of the Portuguese type. In nine patients systolic blood pressure fell by less than 15 mmHg, while in seven patients it fell by more than 15 mmHg. Plasma noradrenaline rose during tilt in the majority of patients, as in the controls. There was no correlation between levels of catecholamines and fall in blood pressure on head-up tilt. The data excludes widespread sympatho-neural failure as a cause for postural hypotension in familial amyloidotic polyneuropathy of the Portuguese type. The results are compatible with either segmental/patchy sympathetic denervation or dysfunction of the receptor/effector mechanisms in target organs such as the heart and blood vessels.

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Plasma catecholamines and postural hypotension in familial amyloidotic polyneuropathy of the Portuguese type

Soares

Breitenfeld²,

Póvoa

et al. 1991

Clinical Autonomic Research

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Autonomic function in patients with familial amyloidotic polyneuropathy and their relatives

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Plasma catecholamines and postural hypotension in familial amyloidotic polyneuropathy of the Portuguese type

Plasma catecholamines and postural hypotension in familial amyloidotic polyneuropathy of the Portuguese type

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