Critical Closing Pressure in Blood Vessels

Fundamental instability of the small blood vessels and critical closing pressures in vascular beds.

they can have only a limited stability, so that gradation of their constriction is possible only over a certain range of diameters of the vessels. I f the tension in the wall of a blood vessel increases above a critical value (given by Laplace’s law), there must be an abrupt and complete closure of the vessel. The relation between the tension in the wall T,, the pressure in the vessel PC and th...

Fundamental Instability of the Small Blood Vessels and Critical Closing Pressures in Vascular Bedsl*

they can have only a limited stability, so that gradation of their constriction is possible only over a certain range of diameters of the vessels. I f the tension in the wall of a blood vessel increases above a critical value (given by Laplace’s law), there must be an abrupt and complete closure of the vessel. The relation between the tension in the wall T,, the pressure in the vessel PC and th...

Critical closing pressure in cerebrovascular circulation.

OBJECTIVE Cerebral critical closing pressure (CCP) has been defined as an arterial pressure threshold below which arterial vessels collapse. Hypothetically this is equal to intracranial pressure (ICP) plus the contribution from the active tone of cerebral arterial smooth muscle. The correlation of CCP with ICP, cerebral autoregulation, and other clinical and haemodynamic modalities in patients ...

Limitations in estimating critical closing pressure by noninvasive blood pressure measurements.

Limitations in Estimating Critical Closing Pressure by Noninvasive Blood Pressure Measurements To the Editor: We read with interest the article by Aaslid et al, describing the dynamic pressure-flow velocities relationships in the human cerebral circulation.1 The authors help to validate estimates of critical closing pressure (CCP) based on regular heartbeat data against long diastole determinat...

Critical closing pressure of vessels supplying the capillary loops of the nailfold.