Bilevel positive airway pressure ventilation: factors influencing carbon dioxide rebreathing

Szkulmowski, Zbigniew; Belkhouja, Kheirallah; Le, Quoc-Hung; Robert, Dominique; Argaud, Laurent

doi:10.1007/s00134-010-1774-z

Cited by 24 publications

(27 citation statements)

References 16 publications

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“…The standard single-limb BPAP circuit increases the likelihood of rebreathing. 11 To lessen this effect, we used a condition that minimizes rebreathing: a medium-size mask with expiratory pressure set at 5 cm H 2 O. 12 Even so, rebreathing could affect the F IO 2 , which was one limitation of our study.…”

Section: Discussionmentioning

confidence: 99%

Oxygen Injection Site Affects F_IO₂During Noninvasive Ventilation

Dai

Kang

et al. 2013

Respir Care

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BACKGROUND: Most portable bi-level positive airway pressure devices are not equipped with air-oxygen blenders for precisely regulating oxygen concentrations, and supplemental oxygen must be added to increase the F IO 2 . Very few studies have investigated the factors that affect F IO 2 , and their conclusions have been inconsistent. We investigated in vitro noninvasive ventilation (NIV) parameters and their effects on F IO 2 , particularly the effect of the oxygen injection site. METHODS: NIV was simulated with a test lung and manikin setup. F IO 2 was measured with 4 oxygen injection sites (mask, in front of the exhalation valve, at the humidifier outlet, and proximal to the ventilator), with 3 exhalation valve types, with 2 oxygen flows, and with 4 combinations of inspiratory and expiratory pressure. RESULTS: Oxygen flow, inspiratory and expiratory pressure, and exhalation valve type all affected F IO 2 . For a given oxygen flow, the oxygen injection site was the most important factor that affected F IO 2 . The oxygen injection site that was closest to the patient (on the mask) had the higher F IO 2 (P < .001). CONCLUSIONS: The oxygen injection site had the greatest effect on F IO 2 during NIV.

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Section: Discussionmentioning

confidence: 99%

Oxygen Injection Site Affects F_IO₂During Noninvasive Ventilation

Dai

Kang

et al. 2013

Respir Care

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“…CO 2 is vented out through a vented system embedded in the interface (some slots or holes on the frame or on the swivel elbow) or through a vented system placed into the RC proximal to the interface. [34][35][36][37][38] …”

Section: Noninvasive Ventilationmentioning

confidence: 99%

Noninvasive Ventilation in Critically Ill Patients

Gregoretti

Pisani

Cortegiani

et al. 2015

Critical Care Clinics

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“…3). Carbon dioxide is vented out through different modalities, as shown in figure 3 [28][29][30][31][32][33] and may be affected by many factors (see part 4 of the recommendations). Inspiratory or expiratory VT are not directly measured but are calculated by an algorithm (see the section dedicated to the monitoring system).…”

Section: Single-limb Circuitmentioning

confidence: 99%

“…Inspiratory or expiratory VT are not directly measured but are calculated by an algorithm (see the section dedicated to the monitoring system). Choosing a ventilator for home mechanical ventilation amount of intentional leak flowing out through the ''vent'' system, non-intentional leaks, and any supplemental oxygen into the mask may all affect the amount of rebreathing [20,[29][30][31][32][33][34]]. …”

Section: Single-limb Circuitmentioning

confidence: 99%

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Choosing a ventilator for home mechanical ventilation

Gregoretti¹,

Navalesi

S³

et al. 2013

breathe

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Educational aimsTo discuss the basic principles of ventilator functionTo help the reader to recognise the different features of a home care ventilatorTo outline the advantages and drawbacks of the different home care ventilatorsTo provide some recommendations to facilitate the clinical management of patients on home care ventilatorSummaryMechanical ventilation, applied either invasively through a tracheotomy tube or noninvasivelyviaa mask, is increasingly used for long-term management of many forms of severe chronic respiratory failure in the home setting. In recent years, the quality of the ventilators for long-term home mechanical ventilation has improved considerably and, concomitantly, the number of machines available has also increased. This broader range of commercially available machines is clearly an advantage; however, it makes the choice of the optimal device for a specific patient more difficult. The aim of the present article is to provide useful information to help and guide the choice of device for long-term mechanical ventilation in the home setting.

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Bilevel positive airway pressure ventilation: factors influencing carbon dioxide rebreathing

Abstract: BLPAP ventilators present a specific rebreathing risk to patients. However, that risk remains modest, even in intubated patients, provided that EPAP is applied.

Cited by 24 publications

References 16 publications

Oxygen Injection Site Affects F_IO₂During Noninvasive Ventilation

Oxygen Injection Site Affects F_IO₂During Noninvasive Ventilation

Noninvasive Ventilation in Critically Ill Patients

Choosing a ventilator for home mechanical ventilation

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Bilevel positive airway pressure ventilation: factors influencing carbon dioxide rebreathing

Abstract: BLPAP ventilators present a specific rebreathing risk to patients. However, that risk remains modest, even in intubated patients, provided that EPAP is applied.

Cited by 24 publications

References 16 publications

Oxygen Injection Site Affects FIO2During Noninvasive Ventilation

Oxygen Injection Site Affects FIO2During Noninvasive Ventilation

Noninvasive Ventilation in Critically Ill Patients

Choosing a ventilator for home mechanical ventilation

Contact Info

Product

Resources

About

Oxygen Injection Site Affects F_IO₂During Noninvasive Ventilation

Oxygen Injection Site Affects F_IO₂During Noninvasive Ventilation