منابع مشابه
Short report Evaluation of pulsed dose oxygen delivery during exercise in patients with severe chronic obstructive pulmonary disease
Background—Oxygen conserving devices may lead to substantial increases in the duration of oxygen provided. A study was undertaken to compare the performance of a pulsed dose oxygen delivery (PDOD) system with continuous flow oxygen or air during a maximal walking test. Methods—Fourteen patients with chronic obstructive pulmonary disease (COPD) and arterial oxygen desaturation on exercise (mean ...
متن کاملPulsed drug delivery.
Modern drug delivery aims to develop drug delivery systems that are able to meet specific therapeutic requirements. Whereas sustained drug release aims to maintain a constant drug level within the body, pulsed drug delivery intends to release the drug rapidly within a short period of time, as a result of a biological or external trigger, after a specific lag time. This editorial highlights some...
متن کاملTowards an Implantable Pulsed Mode Electrolytic Drug Delivery System
This work presents a prototype of an implantable drug delivery system that delivers pulsed doses of a low solubility drug by pulling bodily fluid into a reservoir with the drug in solid form, allowing the drug to dissolve to its maximum co ncentration, and then ejecting the drug laced fluid back into the tissue. The cyclical actuation of the drug delivery sy stem is performed using an electroly...
متن کاملComparison of pulsed versus continuous oxygen delivery using realistic adult nasal airway replicas
BACKGROUND Portable oxygen concentrators (POCs) typically include pulse flow (PF) modes to conserve oxygen. The primary aims of this study were to develop a predictive in vitro model for inhaled oxygen delivery using a set of realistic airway replicas, and to compare PF for a commercial POC with steady flow (SF) from a compressed oxygen cylinder. METHODS Experiments were carried out using a s...
متن کاملEfficacy of a pulsed oxygen delivery device during exercise in patients with chronic respiratory disease.
The ability of a pulsed oxygen delivery system (Puritan-Bennett Companion Oxygen Saver (COS-5) to track respiratory rate during exercise and the oxygenation achieved during the exercise while oxygen was being delivered by this system was compared to that attained while oxygen was delivered continuously in six patients with chronic obstructive pulmonary disease (COPD) and six patients with idiop...
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ژورنال
عنوان ژورنال: Thorax
سال: 1999
ISSN: 0040-6376
DOI: 10.1136/thx.54.8.750a