The second generation of nasal continuous positive airway pressure devices. Are they created equal?

Alejandro D. Chediak, E. Lipson, M. C. Demirozu, M. Kiel

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Nasal continuous positive airway pressure (NCPAP) is considered the preferred medical treatment of obstructive sleep apnea. Because NCPAP exerts its beneficial effects by maintaining positive airway pressure, we proposed to test the ability of the newer 'second generation' NCPAP machines to maintain a constant airway pressure during simulated breathing on a lung model. Each of the seven new NCPAP devices tested were examined under conditions of changing inspiratory flow, end expiratory pressure (EEP) and resistance added to the patient end of the NCPAP hose. During inspiration airway pressure fell and in expiration it increased relative to the EEP in all machines. Using the standard NCPAP hose and a breathing pattern consistent with normal breathing during sleep, the maximum decline in pressure during simulated inspiration and excess pressure during simulated expiration was -0.5 cm H2O and 0.6 cm H2O, respectively. Adding resistance, increasing inspiratory flow but not EEP exaggerated this effect. All of the machines behaved similarly in this regard. Further, the performance of the NCPAP devices did not deteriorate after 6 hours of uninterrupted operation. We conclude that the second generation NCPAP machines may be interchanged without another laboratory trial to readjust the EEP.

Original languageEnglish
Pages (from-to)662-667
Number of pages6
JournalSleep
Volume16
Issue number7
StatePublished - Jan 1 1993

Fingerprint

Continuous Positive Airway Pressure
Pressure
Equipment and Supplies
Respiration
Aptitude
Obstructive Sleep Apnea
Sleep
Lung

Keywords

  • Nasal continuous positive airway pressure
  • Obstructive sleep apnea
  • Sleep apnea
  • Therapy
  • Treatment

ASJC Scopus subject areas

  • Physiology

Cite this

The second generation of nasal continuous positive airway pressure devices. Are they created equal? / Chediak, Alejandro D.; Lipson, E.; Demirozu, M. C.; Kiel, M.

In: Sleep, Vol. 16, No. 7, 01.01.1993, p. 662-667.

Research output: Contribution to journalArticle

Chediak, Alejandro D. ; Lipson, E. ; Demirozu, M. C. ; Kiel, M. / The second generation of nasal continuous positive airway pressure devices. Are they created equal?. In: Sleep. 1993 ; Vol. 16, No. 7. pp. 662-667.
@article{0d91c7d2eab949a0b808b18432db13e8,
title = "The second generation of nasal continuous positive airway pressure devices. Are they created equal?",
abstract = "Nasal continuous positive airway pressure (NCPAP) is considered the preferred medical treatment of obstructive sleep apnea. Because NCPAP exerts its beneficial effects by maintaining positive airway pressure, we proposed to test the ability of the newer 'second generation' NCPAP machines to maintain a constant airway pressure during simulated breathing on a lung model. Each of the seven new NCPAP devices tested were examined under conditions of changing inspiratory flow, end expiratory pressure (EEP) and resistance added to the patient end of the NCPAP hose. During inspiration airway pressure fell and in expiration it increased relative to the EEP in all machines. Using the standard NCPAP hose and a breathing pattern consistent with normal breathing during sleep, the maximum decline in pressure during simulated inspiration and excess pressure during simulated expiration was -0.5 cm H2O and 0.6 cm H2O, respectively. Adding resistance, increasing inspiratory flow but not EEP exaggerated this effect. All of the machines behaved similarly in this regard. Further, the performance of the NCPAP devices did not deteriorate after 6 hours of uninterrupted operation. We conclude that the second generation NCPAP machines may be interchanged without another laboratory trial to readjust the EEP.",
keywords = "Nasal continuous positive airway pressure, Obstructive sleep apnea, Sleep apnea, Therapy, Treatment",
author = "Chediak, {Alejandro D.} and E. Lipson and Demirozu, {M. C.} and M. Kiel",
year = "1993",
month = "1",
day = "1",
language = "English",
volume = "16",
pages = "662--667",
journal = "Sleep",
issn = "0161-8105",
publisher = "American Academy of Sleep Medicine",
number = "7",

}

TY - JOUR

T1 - The second generation of nasal continuous positive airway pressure devices. Are they created equal?

AU - Chediak, Alejandro D.

AU - Lipson, E.

AU - Demirozu, M. C.

AU - Kiel, M.

PY - 1993/1/1

Y1 - 1993/1/1

N2 - Nasal continuous positive airway pressure (NCPAP) is considered the preferred medical treatment of obstructive sleep apnea. Because NCPAP exerts its beneficial effects by maintaining positive airway pressure, we proposed to test the ability of the newer 'second generation' NCPAP machines to maintain a constant airway pressure during simulated breathing on a lung model. Each of the seven new NCPAP devices tested were examined under conditions of changing inspiratory flow, end expiratory pressure (EEP) and resistance added to the patient end of the NCPAP hose. During inspiration airway pressure fell and in expiration it increased relative to the EEP in all machines. Using the standard NCPAP hose and a breathing pattern consistent with normal breathing during sleep, the maximum decline in pressure during simulated inspiration and excess pressure during simulated expiration was -0.5 cm H2O and 0.6 cm H2O, respectively. Adding resistance, increasing inspiratory flow but not EEP exaggerated this effect. All of the machines behaved similarly in this regard. Further, the performance of the NCPAP devices did not deteriorate after 6 hours of uninterrupted operation. We conclude that the second generation NCPAP machines may be interchanged without another laboratory trial to readjust the EEP.

AB - Nasal continuous positive airway pressure (NCPAP) is considered the preferred medical treatment of obstructive sleep apnea. Because NCPAP exerts its beneficial effects by maintaining positive airway pressure, we proposed to test the ability of the newer 'second generation' NCPAP machines to maintain a constant airway pressure during simulated breathing on a lung model. Each of the seven new NCPAP devices tested were examined under conditions of changing inspiratory flow, end expiratory pressure (EEP) and resistance added to the patient end of the NCPAP hose. During inspiration airway pressure fell and in expiration it increased relative to the EEP in all machines. Using the standard NCPAP hose and a breathing pattern consistent with normal breathing during sleep, the maximum decline in pressure during simulated inspiration and excess pressure during simulated expiration was -0.5 cm H2O and 0.6 cm H2O, respectively. Adding resistance, increasing inspiratory flow but not EEP exaggerated this effect. All of the machines behaved similarly in this regard. Further, the performance of the NCPAP devices did not deteriorate after 6 hours of uninterrupted operation. We conclude that the second generation NCPAP machines may be interchanged without another laboratory trial to readjust the EEP.

KW - Nasal continuous positive airway pressure

KW - Obstructive sleep apnea

KW - Sleep apnea

KW - Therapy

KW - Treatment

UR - http://www.scopus.com/inward/record.url?scp=0027426872&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0027426872&partnerID=8YFLogxK

M3 - Article

VL - 16

SP - 662

EP - 667

JO - Sleep

JF - Sleep

SN - 0161-8105

IS - 7

ER -