Skip to main content
Top
Published in: Sleep and Breathing 2/2021

Open Access 01-06-2021 | Heart Failure | Neurology • Original Article

Effects of central apneas on sympathovagal balance and hemodynamics at night: impact of underlying systolic heart failure

Authors: Jens Spiesshoefer, Nora Hegerfeld, Malte Frank Gerdes, Sören Klemm, Martha Gorbachevski, Robert Radke, Izabela Tuleta, Claudio Passino, Xiaoyi Jiang, Paolo Sciarrone, Winfried Randerath, Michael Dreher, Matthias Boentert, Alberto Giannoni

Published in: Sleep and Breathing | Issue 2/2021

Login to get access

Abstract

Background

Increased sympathetic drive is the key determinant of systolic heart failure progression, being associated with worse functional status, arrhythmias, and increased mortality. Central sleep apnea is highly prevalent in systolic heart failure, and its effects on sympathovagal balance (SVB) and hemodynamics might depend on relative phase duration and background pathophysiology.

Objective

This study compared the effects of central apneas in patients with and without systolic heart failure on SVB and hemodynamics during sleep.

Methods

During polysomnography, measures of SVB (heart rate and diastolic blood pressure variability) were non-invasively recorded and analyzed along with baroreceptor reflex sensitivity and hemodynamic parameters (stroke volume index, cardiac index, total peripheral resistance index). Data analysis focused on stable non-rapid eye movement N2 sleep, comparing normal breathing with central sleep apnea in subjects with and without systolic heart failure.

Results

Ten patients were enrolled per group. In heart failure patients, central apneas had neutral effects on SVB (all p > 0.05 for the high, low, and very low frequency components of heart rate and diastolic blood pressure variability). Patients without heart failure showed an increase in very low and low frequency components of diastolic blood pressure variability in response to central apneas (63 ± 18 vs. 39 ± 9%; p = 0.001, 43 ± 12 vs. 31 ± 15%; p = 0.002). In all patients, central apneas had neutral hemodynamic effects when analyzed over a period of 10 min, but had significant acute hemodynamic effects.

Conclusion

Effects of central apneas on SVB during sleep depend on underlying systolic heart failure, with neutral effects in heart failure and increased sympathetic drive in idiopathic central apneas.
Appendix
Available only for authorised users
Literature
1.
go back to reference Oldenburg O, Lamp B, Faber L, Teschler H, Horstkotte D, Töpfer V (2007) Sleep-disordered breathing in patients with symptomatic heart failure. A contemporary study of prevalence in and characteristics of 700 patients. Eur J Heart Fail 9:251–257PubMed Oldenburg O, Lamp B, Faber L, Teschler H, Horstkotte D, Töpfer V (2007) Sleep-disordered breathing in patients with symptomatic heart failure. A contemporary study of prevalence in and characteristics of 700 patients. Eur J Heart Fail 9:251–257PubMed
2.
go back to reference Lanfranchi PA, Somers VK, Braghiroli A, Corra U, Eleuteri E, Giannuzzi P (2003) Central sleep apnea in left ventricular dysfunction: prevalence and implications for arrhythmic risk. Circulation 107:727–732PubMed Lanfranchi PA, Somers VK, Braghiroli A, Corra U, Eleuteri E, Giannuzzi P (2003) Central sleep apnea in left ventricular dysfunction: prevalence and implications for arrhythmic risk. Circulation 107:727–732PubMed
3.
go back to reference Emdin M, Mirizzi G, Giannoni A, Poletti R, Iudice G, Bramanti F, Passino C (2017) Prognostic significance of central apneas throughout a 24-hour period in patients with heart failure. J Am Coll Cardiol 70:1351–1364PubMed Emdin M, Mirizzi G, Giannoni A, Poletti R, Iudice G, Bramanti F, Passino C (2017) Prognostic significance of central apneas throughout a 24-hour period in patients with heart failure. J Am Coll Cardiol 70:1351–1364PubMed
4.
go back to reference Kara T, Narkiewicz K, Somers VK (2003) Chemoreflexes-physiology and clinical implications. Acta Physiol Scand 177:377–384PubMed Kara T, Narkiewicz K, Somers VK (2003) Chemoreflexes-physiology and clinical implications. Acta Physiol Scand 177:377–384PubMed
5.
go back to reference Spiesshoefer J, Spieker M, Klose et al (2019) Reduction of sleep-disordered breathing following effective percutaneous mitral valve repair with the MitraClip system. Sleep Breath 23:815–824PubMed Spiesshoefer J, Spieker M, Klose et al (2019) Reduction of sleep-disordered breathing following effective percutaneous mitral valve repair with the MitraClip system. Sleep Breath 23:815–824PubMed
6.
go back to reference Solin P, Kaye DM, Little PJ et al (2003) Impact of sleep apnea on sympathetic nervous system activity in heart failure. Chest 123:1119–1126PubMed Solin P, Kaye DM, Little PJ et al (2003) Impact of sleep apnea on sympathetic nervous system activity in heart failure. Chest 123:1119–1126PubMed
7.
go back to reference Giannoni A, Raglianti V, Mirizzi G, Taddei C, del Franco A, Iudice G, Bramanti F, Aimo A, Pasanisi E, Emdin M, Passino C (2016) Influence of central apneas and chemo reflex activation on pulmonary artery pressure in chronic heart failure. Int J Cardiol 202:200–206PubMed Giannoni A, Raglianti V, Mirizzi G, Taddei C, del Franco A, Iudice G, Bramanti F, Aimo A, Pasanisi E, Emdin M, Passino C (2016) Influence of central apneas and chemo reflex activation on pulmonary artery pressure in chronic heart failure. Int J Cardiol 202:200–206PubMed
8.
go back to reference Giannoni A, Raglianti V, Taddei C, Borrelli C, Chubuchny V, Vergaro G, Mirizzi G, Valleggi A, Cameli M, Pasanisi E, Emdin M, Passino C (2019) Cheyne-Stokes respiration related oscillations in cardiopulmonary hemodynamics in patients with heart failure. Int J Cardiol 289:76–82PubMed Giannoni A, Raglianti V, Taddei C, Borrelli C, Chubuchny V, Vergaro G, Mirizzi G, Valleggi A, Cameli M, Pasanisi E, Emdin M, Passino C (2019) Cheyne-Stokes respiration related oscillations in cardiopulmonary hemodynamics in patients with heart failure. Int J Cardiol 289:76–82PubMed
9.
go back to reference Floras JS (2009) Sympathetic nervous system activation in human heart failure. Clinical implications of an updated model. J Am Coll Cardiol 54:375–385PubMed Floras JS (2009) Sympathetic nervous system activation in human heart failure. Clinical implications of an updated model. J Am Coll Cardiol 54:375–385PubMed
10.
go back to reference Ponikowski P, Voors A, Anker S, Bueno H, Cleland JGF, Coats AJS, Falk V, González-Juanatey JR, Harjola VP, Jankowska EA, Jessup M, Linde C, Nihoyannopoulos P, Parissis JT, Pieske B, Riley JP, Rosano GMC, Ruilope LM, Ruschitzka F, Rutten FH, van der Meer P, ESC Scientific Document Group (2016) 2016 ESC guidelines for the diagnosis and treatment of acute and chronic heart failure: the Task Force for the diagnosis and treatment of acute and chronic heart failure of the European Society of Cardiology (ESC) developed with the special contribution of the Heart Failure Association (HFA) of the ESC. Eur Heart J 37:2129–2200PubMed Ponikowski P, Voors A, Anker S, Bueno H, Cleland JGF, Coats AJS, Falk V, González-Juanatey JR, Harjola VP, Jankowska EA, Jessup M, Linde C, Nihoyannopoulos P, Parissis JT, Pieske B, Riley JP, Rosano GMC, Ruilope LM, Ruschitzka F, Rutten FH, van der Meer P, ESC Scientific Document Group (2016) 2016 ESC guidelines for the diagnosis and treatment of acute and chronic heart failure: the Task Force for the diagnosis and treatment of acute and chronic heart failure of the European Society of Cardiology (ESC) developed with the special contribution of the Heart Failure Association (HFA) of the ESC. Eur Heart J 37:2129–2200PubMed
11.
go back to reference Lorenzi-Filho G, Rankin F, Bies I, Douglas Bradley T (1999) Effects of inhaled carbon dioxide and oxygen on Cheyne-Stokes respiration in patients with heart failure. Am J Respir Crit Care Med 159:1490–1498PubMed Lorenzi-Filho G, Rankin F, Bies I, Douglas Bradley T (1999) Effects of inhaled carbon dioxide and oxygen on Cheyne-Stokes respiration in patients with heart failure. Am J Respir Crit Care Med 159:1490–1498PubMed
12.
go back to reference Giannoni A, Baruah R, Willson K, Mebrate Y, Mayet J, Emdin M, Hughes AD, Manisty CH, Francis DP (2010) Real-time dynamic carbon dioxide administration a novel treatment strategy for stabilization of periodic breathing with potential application to central sleep apnea. J Am Coll Cardiol 56:1832–1837PubMed Giannoni A, Baruah R, Willson K, Mebrate Y, Mayet J, Emdin M, Hughes AD, Manisty CH, Francis DP (2010) Real-time dynamic carbon dioxide administration a novel treatment strategy for stabilization of periodic breathing with potential application to central sleep apnea. J Am Coll Cardiol 56:1832–1837PubMed
13.
go back to reference Schumacher DS, Müller-Mottet S, Hasler ED et al (2014) Effect of oxygen and acetazolamide on nocturnal cardiac conduction, repolarization, and arrhythmias in precapillary pulmonary hypertension and sleep-disturbed breathing. Chest 146:1226–1236PubMed Schumacher DS, Müller-Mottet S, Hasler ED et al (2014) Effect of oxygen and acetazolamide on nocturnal cardiac conduction, repolarization, and arrhythmias in precapillary pulmonary hypertension and sleep-disturbed breathing. Chest 146:1226–1236PubMed
14.
go back to reference Fontana M, Emdin M, Giannoni A, Iudice G, Baruah R, Passino C (2011) Effect of acetazolamide on chemosensitivity, Cheyne-Stokes respiration, and response to effort in patients with heart failure. Am J Cardiol 107:1675–1680PubMed Fontana M, Emdin M, Giannoni A, Iudice G, Baruah R, Passino C (2011) Effect of acetazolamide on chemosensitivity, Cheyne-Stokes respiration, and response to effort in patients with heart failure. Am J Cardiol 107:1675–1680PubMed
15.
go back to reference Javaheri S (2006) Acetazolamide improves central sleep apnea in heart failure: a double-blind, prospective study. Am J Respir Crit Care Med 173:234–237PubMed Javaheri S (2006) Acetazolamide improves central sleep apnea in heart failure: a double-blind, prospective study. Am J Respir Crit Care Med 173:234–237PubMed
16.
go back to reference Naughton MT, Benard DC, Liu PP, Rutherford R, Rankin FBT (1995) Effects of nasal CPAP on sympathetic activity in patients with heart failure and central sleep apnea. Am J Respir Crit Care Med 152:473–479PubMed Naughton MT, Benard DC, Liu PP, Rutherford R, Rankin FBT (1995) Effects of nasal CPAP on sympathetic activity in patients with heart failure and central sleep apnea. Am J Respir Crit Care Med 152:473–479PubMed
17.
go back to reference Koyama T, Watanabe H, Tamura Y, Oguma Y, Kosaka T, Ito H (2013) Adaptive servo-ventilation therapy improves cardiac sympathetic nerve activity in patients with heart failure. Eur J Heart Fail 15:902–909PubMed Koyama T, Watanabe H, Tamura Y, Oguma Y, Kosaka T, Ito H (2013) Adaptive servo-ventilation therapy improves cardiac sympathetic nerve activity in patients with heart failure. Eur J Heart Fail 15:902–909PubMed
18.
go back to reference Joho S, Oda Y, Ushijima R, Hirai T, Inoue H (2012) Effect of adaptive servoventilation on muscle sympathetic nerve activity in patients with chronic heart failure and central sleep apnea. J Card Fail 18:769–775PubMed Joho S, Oda Y, Ushijima R, Hirai T, Inoue H (2012) Effect of adaptive servoventilation on muscle sympathetic nerve activity in patients with chronic heart failure and central sleep apnea. J Card Fail 18:769–775PubMed
19.
go back to reference Cowie MR, Woehrle H, Wegscheider K et al (2018) Adaptive servo-ventilation for central sleep apnoea in systolic heart failure : results of the major substudy of SERVE-HF. Eur J Heart Fail 20:536–544PubMed Cowie MR, Woehrle H, Wegscheider K et al (2018) Adaptive servo-ventilation for central sleep apnoea in systolic heart failure : results of the major substudy of SERVE-HF. Eur J Heart Fail 20:536–544PubMed
20.
go back to reference Mehra R, Gottlieb DJ (2015) A paradigm shift in the treatment of central sleep apnea in heart failure. Chest 148:848–851PubMed Mehra R, Gottlieb DJ (2015) A paradigm shift in the treatment of central sleep apnea in heart failure. Chest 148:848–851PubMed
21.
go back to reference Linz D, Fox H, Bitter T et al (2016) Impact of SERVE-HF on management of sleep disordered breathing in heart failure: a call for further studies. Clin Res Cardiol 105:563–570PubMed Linz D, Fox H, Bitter T et al (2016) Impact of SERVE-HF on management of sleep disordered breathing in heart failure: a call for further studies. Clin Res Cardiol 105:563–570PubMed
22.
go back to reference Naughton MT (2012) Cheyne–Stokes respiration: friend or foe? Thorax 67:357–360PubMed Naughton MT (2012) Cheyne–Stokes respiration: friend or foe? Thorax 67:357–360PubMed
23.
go back to reference Oldenburg O, Spießhöfer J, Fox H et al (2015) Cheyne-Stokes respiration in heart failure: friend or foe? Hemodynamic effects of hyperventilation in heart failure patients and healthy volunteers. Clin Res Cardiol 104:328–333PubMed Oldenburg O, Spießhöfer J, Fox H et al (2015) Cheyne-Stokes respiration in heart failure: friend or foe? Hemodynamic effects of hyperventilation in heart failure patients and healthy volunteers. Clin Res Cardiol 104:328–333PubMed
25.
go back to reference Solin P, Roebuck T, Johns DP, Walters EH, Naughton MT (2000) Peripheral and central ventilatory responses in central sleep apnea with and without congestive heart failure. Am J Respir Crit Care Med 162:2194–2200PubMed Solin P, Roebuck T, Johns DP, Walters EH, Naughton MT (2000) Peripheral and central ventilatory responses in central sleep apnea with and without congestive heart failure. Am J Respir Crit Care Med 162:2194–2200PubMed
26.
go back to reference Baumgartner H, Falk V, Bax JJ et al (2017) 2017 ESC/EACTS guidelines for the management of valvular heart disease. Eur Heart J 38:2739–2786PubMed Baumgartner H, Falk V, Bax JJ et al (2017) 2017 ESC/EACTS guidelines for the management of valvular heart disease. Eur Heart J 38:2739–2786PubMed
27.
go back to reference Fortin J, Habenbacher W, Heller A, Hacker A, Grüllenberger R, Innerhofer J, Passath H, Wagner Ch, Haitchi G, Flotzinger D, Pacher R, Wach P (2006) Non-invasive beat-to-beat cardiac output monitoring by an improved method of transthoracic bioimpedance measurement. Comput Biol Med 36:1185–1203PubMed Fortin J, Habenbacher W, Heller A, Hacker A, Grüllenberger R, Innerhofer J, Passath H, Wagner Ch, Haitchi G, Flotzinger D, Pacher R, Wach P (2006) Non-invasive beat-to-beat cardiac output monitoring by an improved method of transthoracic bioimpedance measurement. Comput Biol Med 36:1185–1203PubMed
28.
go back to reference Fortin J, Marte W, Grüllenberger R, Hacker A, Habenbacher W, Heller A, Wagner Ch, Wach P, Skrabal F (2006) Continuous non-invasive blood pressure monitoring using concentrically interlocking control loops. Comput Biol Med 36:941–957PubMed Fortin J, Marte W, Grüllenberger R, Hacker A, Habenbacher W, Heller A, Wagner Ch, Wach P, Skrabal F (2006) Continuous non-invasive blood pressure monitoring using concentrically interlocking control loops. Comput Biol Med 36:941–957PubMed
29.
go back to reference Spießhöfer J, Fox H, Lehmann R et al (2016) Heterogenous haemodynamic effects of adaptive servoventilation therapy in sleeping patients with heart failure and Cheyne–Stokes respiration compared to healthy volunteers. Heart Vessel 31:1117–1130 Spießhöfer J, Fox H, Lehmann R et al (2016) Heterogenous haemodynamic effects of adaptive servoventilation therapy in sleeping patients with heart failure and Cheyne–Stokes respiration compared to healthy volunteers. Heart Vessel 31:1117–1130
30.
go back to reference Gratze G, Fortin J, Holler A, Grasenick K, Pfurtscheller G, Wach P, Schönegger J, Kotanko P, Skrabal F (1998) A software package for non-invasive, real-time beat-to-beat monitoring of stroke volume, blood pressure, total peripheral resistance and for assessment of autonomic function. Comput Biol Med 28:121–142PubMed Gratze G, Fortin J, Holler A, Grasenick K, Pfurtscheller G, Wach P, Schönegger J, Kotanko P, Skrabal F (1998) A software package for non-invasive, real-time beat-to-beat monitoring of stroke volume, blood pressure, total peripheral resistance and for assessment of autonomic function. Comput Biol Med 28:121–142PubMed
31.
go back to reference Nakata A, Takata S, Yuasa T et al (1998) Spectral analysis of heart rate, arterial pressure, and muscle sympathetic nerve activity in normal humans. Power 274:1211–1217 Nakata A, Takata S, Yuasa T et al (1998) Spectral analysis of heart rate, arterial pressure, and muscle sympathetic nerve activity in normal humans. Power 274:1211–1217
32.
go back to reference Guidelines (1996) Guidelines Heart rate variability. Eur Heart J 17:354–381 Guidelines (1996) Guidelines Heart rate variability. Eur Heart J 17:354–381
33.
go back to reference Carrasco-Sosa S, Gaitán-González MJ, González-Camarena R, Yáñez-Suárez O (2005) Baroreflex sensitivity assessment and heart rate variability: relation to maneuver and technique. Eur J Appl Physiol 95:265–275PubMed Carrasco-Sosa S, Gaitán-González MJ, González-Camarena R, Yáñez-Suárez O (2005) Baroreflex sensitivity assessment and heart rate variability: relation to maneuver and technique. Eur J Appl Physiol 95:265–275PubMed
34.
go back to reference Davies LC, Francis D, Jurák P et al (1999) Reproducibility of methods for assessing baroreflex sensitivity in normal controls and in patients with chronic heart failure. Clin Sci (Lond) 97:515–522 Davies LC, Francis D, Jurák P et al (1999) Reproducibility of methods for assessing baroreflex sensitivity in normal controls and in patients with chronic heart failure. Clin Sci (Lond) 97:515–522
35.
go back to reference Berry RB, Gamaldo CE, Harding SM, Lloyd RM, Marcus CL, Vaughn BV, for the American Academy of Sleep Medicine BR (2012) The AASM manual for the scoring of sleep and associated events. J Clin Sleep Med 8:597–619PubMedPubMedCentral Berry RB, Gamaldo CE, Harding SM, Lloyd RM, Marcus CL, Vaughn BV, for the American Academy of Sleep Medicine BR (2012) The AASM manual for the scoring of sleep and associated events. J Clin Sleep Med 8:597–619PubMedPubMedCentral
36.
go back to reference Spiesshoefer J, Becker S, Tuleta I, Mohr M, Diller GP, Emdin M, Florian AR, Yilmaz A, Boentert M, Giannoni A (2019) Impact of simulated hyperventilation and periodic breathing on sympatho-vagal balance and hemodynamics in patients with and without heart failure. Respiration 98:482–494PubMed Spiesshoefer J, Becker S, Tuleta I, Mohr M, Diller GP, Emdin M, Florian AR, Yilmaz A, Boentert M, Giannoni A (2019) Impact of simulated hyperventilation and periodic breathing on sympatho-vagal balance and hemodynamics in patients with and without heart failure. Respiration 98:482–494PubMed
38.
go back to reference Karemaker JM (2017) An introduction into autonomic nervous function. Physiol Meas 38:89–118 Karemaker JM (2017) An introduction into autonomic nervous function. Physiol Meas 38:89–118
39.
go back to reference Penzel T, Wessel N, Riedl M et al (2007) Cardiovascular and respiratory dynamics during normal and pathological sleep. Chaos 17:015116PubMed Penzel T, Wessel N, Riedl M et al (2007) Cardiovascular and respiratory dynamics during normal and pathological sleep. Chaos 17:015116PubMed
40.
go back to reference Poletti R, Passino C, Giannoni A, Zyw L, Prontera C, Bramanti F, Clerico A, Piepoli M, Emdin M (2009) Risk factors and prognostic value of daytime Cheyne–Stokes respiration in chronic heart failure patients. Int J Cardiol 137:47–53PubMed Poletti R, Passino C, Giannoni A, Zyw L, Prontera C, Bramanti F, Clerico A, Piepoli M, Emdin M (2009) Risk factors and prognostic value of daytime Cheyne–Stokes respiration in chronic heart failure patients. Int J Cardiol 137:47–53PubMed
41.
go back to reference Mansfield D, Kaye DM, La Rocca HB et al (2003) Raised sympathetic nerve activity in heart failure and central sleep apnea is due to heart failure severity. Circulation 107:1396–1400PubMed Mansfield D, Kaye DM, La Rocca HB et al (2003) Raised sympathetic nerve activity in heart failure and central sleep apnea is due to heart failure severity. Circulation 107:1396–1400PubMed
42.
go back to reference Maze SS, Kotler MN, Parry WR (1989) Doppler evaluation of changing cardiac dynamics during Cheyne-Stokes respiration. Chest 95:525–529PubMed Maze SS, Kotler MN, Parry WR (1989) Doppler evaluation of changing cardiac dynamics during Cheyne-Stokes respiration. Chest 95:525–529PubMed
43.
go back to reference Xie A, Wong B, Phillipson EA et al (1994) Interaction of hyperventilation and arousal in the pathogenesis of idiopathic central sleep apnea. Am J Respir Crit Care Med 150:489–495PubMed Xie A, Wong B, Phillipson EA et al (1994) Interaction of hyperventilation and arousal in the pathogenesis of idiopathic central sleep apnea. Am J Respir Crit Care Med 150:489–495PubMed
44.
go back to reference Van de Borne P, Montano N, Zimmerman B et al (1997) Relationship between repeated measures of hemodynamics, muscle sympathetic nerve activity, and their spectral oscillations. Circulation 96:4326–4332PubMed Van de Borne P, Montano N, Zimmerman B et al (1997) Relationship between repeated measures of hemodynamics, muscle sympathetic nerve activity, and their spectral oscillations. Circulation 96:4326–4332PubMed
45.
go back to reference Kienzle MG, Ferguson DW, Birkett CL et al (1992) Clinical, hemodynamic and sympathetic neural correlates of heart rate variability in congestive heart failure. Am J Cardiol 69:761–767PubMed Kienzle MG, Ferguson DW, Birkett CL et al (1992) Clinical, hemodynamic and sympathetic neural correlates of heart rate variability in congestive heart failure. Am J Cardiol 69:761–767PubMed
46.
go back to reference Türoff A, Thiem U, Fox H, Spießhöfer J, Bitter T, Tamisier R, Punjabi NM, Horstkotte D, Oldenburg O (2017) Sleep duration and quality in heart failure patients. Sleep Breath 21:919–927PubMed Türoff A, Thiem U, Fox H, Spießhöfer J, Bitter T, Tamisier R, Punjabi NM, Horstkotte D, Oldenburg O (2017) Sleep duration and quality in heart failure patients. Sleep Breath 21:919–927PubMed
47.
go back to reference Burnum JF, Hickam JB, McIntosh HD (1954) The effect of hypocapnia on arterial blood pressure. Circulation 9:89–95PubMed Burnum JF, Hickam JB, McIntosh HD (1954) The effect of hypocapnia on arterial blood pressure. Circulation 9:89–95PubMed
Metadata
Title
Effects of central apneas on sympathovagal balance and hemodynamics at night: impact of underlying systolic heart failure
Authors
Jens Spiesshoefer
Nora Hegerfeld
Malte Frank Gerdes
Sören Klemm
Martha Gorbachevski
Robert Radke
Izabela Tuleta
Claudio Passino
Xiaoyi Jiang
Paolo Sciarrone
Winfried Randerath
Michael Dreher
Matthias Boentert
Alberto Giannoni
Publication date
01-06-2021
Publisher
Springer International Publishing
Keyword
Heart Failure
Published in
Sleep and Breathing / Issue 2/2021
Print ISSN: 1520-9512
Electronic ISSN: 1522-1709
DOI
https://doi.org/10.1007/s11325-020-02144-8

Other articles of this Issue 2/2021

Sleep and Breathing 2/2021 Go to the issue

Sleep Breathing Physiology and Disorders • Original Article

Impaired intestinal barrier in patients with obstructive sleep apnea