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Response shift in perception of sleepiness in obstructive sleep apnea-hypopnea syndrome before and after treatment with nasal CPAP.
Sleep. 2004 May 01; 27(3):490-3.S

Abstract

STUDY OBJECTIVES

After nasal continuous positive airway pressure (nCPAP) treatment, several symptoms such as hypersomnolence, daytime fatigue, and impaired concentration improve in patients with obstructive sleep apnea-hypopnea syndrome (OSAHS). A variability of perception of pretreatment sleepiness (response-shift phenomenon) experienced in OSAHS patients before and after nCPAP treatment may reflect informative shifts in an individual's internal standards, in values and priorities, or in the conceptualization of perceived sleepiness. The objective of this study is to determine whether there is a response shift in perceptions of pretreatment sleepiness before and after nCPAP treatment in patients with OSAHS. We investigated the response shift in Epworth Sleepiness Scale scores before and after nCPAP.

DESIGN

Thirty-one consecutive OSAHS patients filled out the subjective ESS before nCPAP treatment (Pre-ESS). After a mean of about 10 months of nCPAP treatment, the patients filled out the ESS again, which was designated as the Post-ESS. Then they were asked to complete the scale again, recalling sleepiness before nCPAP treatment (Response Shift-Pre-ESS). The control group consisted of 11 patients with OSAHS who had not yet received nCPAP treatments and were matched for age, body mass index, and respiratory disturbance index.

SETTING

University Hospital in, Japan.

INTERVENTIONS

N/A.

MEASUREMENTS AND RESULTS

There was a significant response shift in ESS scores before and after nCPAP treatment (Pre-ESS: 8.5 [95% Confidence interval [CI], 7.1-9.9] vs Response Shift-Pre-ESS: 11.1 [95% CI, 9.5-12.8], P < .002). A significant number of patients (P < .02) had not recognized the degree of sleepiness experienced before treatment until after they had received nCPAP treatment. Eight had pretreatment ESS scores > or = 11 and 18 had posttreatment ESS scores > or = 11 on the Response Shift-Pre-ESS. In the control group, ESS did not change significantly from the first to the second testing performed before nCPAP treatment (first ESS, 8.8 [95% CI, 5.3-12.3]; second ESS, 8.3 [95% CI, 4.7-11.8]: P = .95).

CONCLUSIONS

Response shifts should be taken into consideration when explaining factors underlying individual differences in susceptibility to daytime sleepiness.

Authors+Show Affiliations

Department of Physical Therapeutics, Kyoto University Hospital, Kyoto, Japan. chink@kuhp.kyoto-u.ac.jpNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15164904

Citation

Chin, Kazuo, et al. "Response Shift in Perception of Sleepiness in Obstructive Sleep Apnea-hypopnea Syndrome Before and After Treatment With Nasal CPAP." Sleep, vol. 27, no. 3, 2004, pp. 490-3.
Chin K, Fukuhara S, Takahashi K, et al. Response shift in perception of sleepiness in obstructive sleep apnea-hypopnea syndrome before and after treatment with nasal CPAP. Sleep. 2004;27(3):490-3.
Chin, K., Fukuhara, S., Takahashi, K., Sumi, K., Nakamura, T., Matsumoto, H., Niimi, A., Hattori, N., Mishima, M., & Nakamura, T. (2004). Response shift in perception of sleepiness in obstructive sleep apnea-hypopnea syndrome before and after treatment with nasal CPAP. Sleep, 27(3), 490-3.
Chin K, et al. Response Shift in Perception of Sleepiness in Obstructive Sleep Apnea-hypopnea Syndrome Before and After Treatment With Nasal CPAP. Sleep. 2004 May 1;27(3):490-3. PubMed PMID: 15164904.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Response shift in perception of sleepiness in obstructive sleep apnea-hypopnea syndrome before and after treatment with nasal CPAP. AU - Chin,Kazuo, AU - Fukuhara,Shunichi, AU - Takahashi,Kenichi, AU - Sumi,Kensuke, AU - Nakamura,Takaya, AU - Matsumoto,Hisako, AU - Niimi,Akio, AU - Hattori,Noboru, AU - Mishima,Michiaki, AU - Nakamura,Takashi, PY - 2004/5/29/pubmed PY - 2004/8/12/medline PY - 2004/5/29/entrez SP - 490 EP - 3 JF - Sleep JO - Sleep VL - 27 IS - 3 N2 - STUDY OBJECTIVES: After nasal continuous positive airway pressure (nCPAP) treatment, several symptoms such as hypersomnolence, daytime fatigue, and impaired concentration improve in patients with obstructive sleep apnea-hypopnea syndrome (OSAHS). A variability of perception of pretreatment sleepiness (response-shift phenomenon) experienced in OSAHS patients before and after nCPAP treatment may reflect informative shifts in an individual's internal standards, in values and priorities, or in the conceptualization of perceived sleepiness. The objective of this study is to determine whether there is a response shift in perceptions of pretreatment sleepiness before and after nCPAP treatment in patients with OSAHS. We investigated the response shift in Epworth Sleepiness Scale scores before and after nCPAP. DESIGN: Thirty-one consecutive OSAHS patients filled out the subjective ESS before nCPAP treatment (Pre-ESS). After a mean of about 10 months of nCPAP treatment, the patients filled out the ESS again, which was designated as the Post-ESS. Then they were asked to complete the scale again, recalling sleepiness before nCPAP treatment (Response Shift-Pre-ESS). The control group consisted of 11 patients with OSAHS who had not yet received nCPAP treatments and were matched for age, body mass index, and respiratory disturbance index. SETTING: University Hospital in, Japan. INTERVENTIONS: N/A. MEASUREMENTS AND RESULTS: There was a significant response shift in ESS scores before and after nCPAP treatment (Pre-ESS: 8.5 [95% Confidence interval [CI], 7.1-9.9] vs Response Shift-Pre-ESS: 11.1 [95% CI, 9.5-12.8], P < .002). A significant number of patients (P < .02) had not recognized the degree of sleepiness experienced before treatment until after they had received nCPAP treatment. Eight had pretreatment ESS scores > or = 11 and 18 had posttreatment ESS scores > or = 11 on the Response Shift-Pre-ESS. In the control group, ESS did not change significantly from the first to the second testing performed before nCPAP treatment (first ESS, 8.8 [95% CI, 5.3-12.3]; second ESS, 8.3 [95% CI, 4.7-11.8]: P = .95). CONCLUSIONS: Response shifts should be taken into consideration when explaining factors underlying individual differences in susceptibility to daytime sleepiness. SN - 0161-8105 UR - https://www.unboundmedicine.com/medline/citation/15164904/Response_shift_in_perception_of_sleepiness_in_obstructive_sleep_apnea_hypopnea_syndrome_before_and_after_treatment_with_nasal_CPAP_ L2 - http://ovidsp.ovid.com/ovidweb.cgi?T=JS&amp;PAGE=linkout&amp;SEARCH=15164904.ui DB - PRIME DP - Unbound Medicine ER -