Instability and `Sausage-String' Appearance in Blood Vessels during High Blood Pressure

(2) Instituto Mediterraneo de Estudios Avanzados; (3) Novo Nordisk; (4) Department of Medical Physiology; CSIC-UIB; Denmark; Denmark); Finn Gustafsson (4); Morten Colding-Jorgensen (3); Niels-Henrik Holstein-Rathlou (4) ((1) CATS; Preben Alstrom (1)

arxiv: physics/9810002 · v1 · pith:6EA7HHUQnew · submitted 1998-10-02 · ⚛️ physics.bio-ph · physics.med-ph· q-bio

Instability and `Sausage-String' Appearance in Blood Vessels during High Blood Pressure

Preben Alstrom (1) , Victor M. Eguiluz (2) , Morten Colding-Jorgensen (3) , Finn Gustafsson (4) , Niels-Henrik Holstein-Rathlou (4) ((1) CATS , The Niels Bohr Institute , Denmark , (2) Instituto Mediterraneo de Estudios Avanzados

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CSIC-UIB Spain (3) Novo Nordisk (4) Department of Medical Physiology The Panum Institute Denmark)

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classification ⚛️ physics.bio-ph physics.med-phq-bio

keywords bloodinstabilitysausage-stringundervesselvesselsagentalternating

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A new Rayleigh-type instability is proposed to explain the `sausage-string' pattern of alternating constrictions and dilatations formed in blood vessels under influence of a vasoconstricting agent. Our theory involves the nonlinear elasticity characteristics of the vessel wall, and provides predictions for the conditions under which the cylindrical form of a blood vessel becomes unstable.

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Instability and `Sausage-String' Appearance in Blood Vessels during High Blood Pressure

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