0
Clinical Investigations: SLEEP AND BREATHING |

Mild to Moderate Sleep Respiratory Events*: One Negative Night May Not Be Enough

Olivier Le Bon, MD; Guy Hoffmann, PhD; Juan Tecco, MD; Luc Staner, MD; André Noseda, MD, PhD; Isidore Pelc, MD, PhD; Paul Linkowski, MD, PhD
Author and Funding Information

*From the Centre Hospitalier Universitaire Brugmann (Drs. Le Bon, Hoffmann, Tecco, Noseda, and Pelc), Université Libre de Bruxelles, Brussels, Belgium; Sleep Laboratory (Dr. Staner), FORENAP, Centre Hospitalier Rouffach, France; Hôpital Universitaire Erasme (Dr. Linkowski), Université Libre de Bruxelles, Brussels, Belgium.

Correspondence to: Olivier Le Bon, MD, CHU Brugmann, Service de Psychiatrie, S48, Place Van Gehuchten 4, 1020 Bruxelles, Belgium; e-mail: lebono@ulb.ac.be



Chest. 2000;118(2):353-359. doi:10.1378/chest.118.2.353
Text Size: A A A
Published online

Study objectives: Reports on the reproducibility of apnea-hypopnea indexes (AHIs) across sequential polysomnography (PSG) sessions are conflicting, leading to a lack of clear recommendations on the optimal use of this technique: is one night of monitoring sufficient or is a second night required in order to safely reject the diagnosis?

Design: Retrospective comparison of two consecutive nights.

Setting: Sleep unit of a tertiary-care facility.

Patients: Two hundred forty-three subjects with suspected sleep apneas.

Interventions: Two sequential PSG sessions in a sleep unit.

Measurements and results: Using analysis of covariance for repeated measures, with age and body mass index as covariates and gender as a cofactor, a classic first-night effect was found for sleep variables. In addition, a night effect was demonstrated for sleep respiratory variables. Moreover, the high variability of AHIs showed that many patients had their condition diagnosed on only one of the two nights, and more often on the second night than on the first. The gain in detection by adding a second night when the results of testing on the first were negative was between 15% and 25%, according to the AHI obtained on night 1.

Conclusions: Considering the disability associated with sleep apnea/hypopnea syndrome, as well as its global cost for society, the present study shows that it is worth performing two consecutive PSG sessions or at least a second one when the result of the first one is negative in all patients admitted for apnea detection.

Figures in this Article

Sign In to Access Full Content

MEMBER & INDIVIDUAL SUBSCRIBER

Want Access?

NEW TO CHEST?

Become a CHEST member and receive a FREE subscription as a benefit of membership.

Individuals can purchase this article on ScienceDirect.

Individuals can purchase a subscription to the journal.

Individuals can purchase a subscription to the journal or buy individual articles.

Learn more about membership or Purchase a Full Subscription.

INSTITUTIONAL ACCESS

Institutional access is now available through ScienceDirect and can be purchased at myelsevier.com.

Topics

sleep

Sign In to Access Full Content

MEMBER & INDIVIDUAL SUBSCRIBER

Want Access?

NEW TO CHEST?

Become a CHEST member and receive a FREE subscription as a benefit of membership.

Individuals can purchase this article on ScienceDirect.

Individuals can purchase a subscription to the journal.

Individuals can purchase a subscription to the journal or buy individual articles.

Learn more about membership or Purchase a Full Subscription.

INSTITUTIONAL ACCESS

Institutional access is now available through ScienceDirect and can be purchased at myelsevier.com.

Figures

Tables

References

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Sign In to Access Full Content

MEMBER & INDIVIDUAL SUBSCRIBER

Want Access?

NEW TO CHEST?

Become a CHEST member and receive a FREE subscription as a benefit of membership.

Individuals can purchase this article on ScienceDirect.

Individuals can purchase a subscription to the journal.

Individuals can purchase a subscription to the journal or buy individual articles.

Learn more about membership or Purchase a Full Subscription.

INSTITUTIONAL ACCESS

Institutional access is now available through ScienceDirect and can be purchased at myelsevier.com.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Find Similar Articles
CHEST Journal Articles
PubMed Articles
  • CHEST Journal
    Print ISSN: 0012-3692
    Online ISSN: 1931-3543