BACKGROUND: Portable oxygen concentrators (POCs) deliver oxygen in intermittent
pulses. The challenge of establishing equivalence between continuous flow oxygen and …

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 …

BACKGROUND: Demand oxygen delivery systems (DODS) allot oxygen by interrupting the
oxygen flow during exhalation, when it would mostly be wasted. Because DODS conserve …

Oxygen treatment based on intermittent-flow devices with pulse delivery modes available
from portable oxygen concentrators (POCs) depends on the characteristics of the delivered …

Recent heightened concern about the costs of medical care has stimulated research and
development in devices and schemes for saving costs while retaining quality of care …

BACKGROUND: Supplemental oxygen is designed to raise alveolar PO2 to facilitate
diffusion into arterial blood. Oxygen is generally delivered by nasal cannula either by …

BACKGROUND: Several portable oxygen concentrators (POCs) have become available in
the United States. Technical trade-offs are made in designing POCs, so their performance is …

BACKGROUND: The FIO2 for a nasal cannula with constant flow (CF) depends on the
anatomic reservoir (AR), which is affected by changes in frequency and end-expiratory flow …

Background Decades of clinical research into pulsed oxygen delivery has shown variable
efficacy between users, and across a user's behaviours (sleep, rest, activity). Modern …

BACKGROUND: Currently available methods for conserving oxygen include transtracheal
catheters, reservoir cannulae, and demand oxygen delivery systems (DODS). DODS do not …