CO2 expirograms during ERV expiration

A quantitative description of the pattern of breathing during steady-state CO2 inhalation in man, with special emphasis on expiration.

1. Quantitative data on the pattern of breathing in normal men and women (Gardner, 1977) have been used to derive expressions that are based on known physiological mechanisms.2. The relations between the applied chemical drive to breathing (expressed as DeltaP(A, CO2) in high O(2)) and the several components of the volume-time patterns described in the companion paper were examined. Neither mea...

Abdominal muscle action during expiration can impair pressure controlled ventilation.

Pressure controlled ventilation, and pressure support for spontaneous breathing are often used in intensive care because coordination of the ventilator with patient efforts can improve comfort and possibly reduce sedation. However we report a series of 10 patients whose efforts did not synchronise with pressure controlled ventilation. This was incorrectly diagnosed as inadequate sedation, and t...

Logical Data Expiration

Draft Expiration Date : August

Classic IP traffic engineering considers a fixed IP layer topology. In this draft, we address the limitations imposed by such static network topology. This work is motivated by introducing dynamically provisioned links to improve static IP traffic engineering constraints, and leverage the freedom of provisioning links on demand. This draft introduces the concept of a closed-loop link provisioni...

Expiration of Historical Databases

We present a technique for automatic expiration of data in a historical data warehouse that preserves answers to a known and fixed set of first-order queries. In addition, we show that for queries with output size bounded by a function of the active data domain size (the number of values that have ever appeared in the warehouse), the size of the portion of the data warehouse history needed to a...