Abstract
Aim
The Marburg vigilance test (VigiMar) is a vigilance task implemented as a four-choice reaction time task with long duration and low stimulus rate. It tests readiness for reaction under monotonous conditions characterized by sensory deprivation. This study was conducted to compare test results of subjects without sleep disorders to those of patients with untreated obstructive sleep apnea (OSA). In addition, whether patients treated for OSA by continuous positive airway pressure (CPAP) exhibited improvements in vigilance testing and whether subjects without sleep disorders have stable test results in a retest after 2 days were investigated. As test results are given for test thirds separately, these were used to determine whether there was a time-on-task effect for patients with untreated OSA and to check for internal consistency of the VigiMar test.
Patients and methods
A total of 20 patients with OSA and 20 surgical patients (knee arthroscopy) between 25 and 65 years of age were included. All patients were male. Vigilance testing was performed on the day before CPAP treatment was started or on the day before arthroscopy and 2 days later after the second CPAP night or on the first day after the surgical procedure, respectively.
Results
In the baseline vigilance test, reaction times of OSA patients were longer than those of surgical patients, especially during the last third of the test. After 2 nights CPAP, reaction times of OSA patients improved to the same level as those of surgical patients who exhibited homogenous results in baseline and postintervention testing.
Conclusion
The VigiMar test is suitable for the assessment of impaired vigilance. Its internal consistency is high, retest reliability is satisfactory, and it is sensitive for changes in vigilance after only 2 nights CPAP treatment.
Zusammenfassung
Fragestellung
Der Marburger Vigilanztest (VigiMar) ist ein klassischer Vigilanztest in Form eines Vierfach-Wahl-Reaktionszeit-Tests mit langer Dauer und niedriger Reizfrequenz, der die Reaktionsbereitschaft unter monotonen, von Reizarmut charakterisierten Bedingungen erfasst. In dieser Untersuchung sollte analysiert werden, ob sich Schlafgesunde bei den Testergebnissen von Patienten mit unbehandelter Schlafapnoe unterscheiden. Außerdem war von Interesse, ob Patienten mit Schlafapnoe nach 2 Nächten CPAP-Therapie („continuous positive airway pressure“) Verbesserungen im Vigilanztest zeigen und ob Schlafgesunde bei Testwiederholung nach 2 Tagen stabile Testergebnisse haben. Da Ergebnisse für einzelne Testdrittel ausgegeben werden, sollte mit ihnen geprüft werden, ob es für Patienten mit unbehandelter Schlafapnoe einen Time-on-Task-Effekt gibt bzw. wie hoch die interne Konsistenz des VigiMar ist.
Patienten und Methoden
In die Studie wurden 20 Patienten mit OSA und 20 chirurgische Patienten (Arthroskopie des Knies) im Alter zwischen 25 und 65 Jahren aufgenommen. Alle Patienten waren Männer. Am Tag vor der Operation bzw. vor dem Beginn der CPAP-Therapie und 2 Tage später wurde der VigiMar durchgeführt.
Ergebnisse
Bei der Baselinetestung waren die Reaktionszeiten der OSA-Patienten besonders im letzten Drittel des Tests länger als bei den chirurgischen Patienten. Nach 2 Nächten CPAP reduzierten sich die Reaktionszeiten der OSA-Patienten auf das Niveau der Schlafgesunden, was im Vor- und Nachtest recht homogen war.
Fazit
Der Vigimar ist zur Objektivierung beeinträchtigter Vigilanz geeignet. Er zeigt eine hohe interne Konsistenz bei zufriedenstellender Retest-Reliabilität und ist sensitiv für Vigilanzveränderungen nach nur 2 Nächten CPAP-Behandlung.
Similar content being viewed by others
References
ICSD-2 – International classification of sleep disorders: Diagnostic and coding manual (2010) 2nd edn. Westchester, American Academy of Sleep Medicine
Becker H, Ficker J, Fietze I et al (2009) S3-Leitlinie Nicht erholsamer Schlaf. Somnologie 13(Suppl 1):4–160
Bortz J (1989) Statistik für Sozialwissenschaftler. Springer, Berlin Heidelberg New York London Paris Tokyo
Browman CP, Sampson MG, Yolles SF et al (1984) Obstructive sleep apnea and body weight. Chest 85(3):435–438
Bühner M (2006) Einführung in die Test- und Fragebogenkonstruktion. 2 edn. Pearson Studium, München
Carskadon MA, Dement WC, Mitler MM et al (1986) Guidelines for the multiple sleep latency test (MSLT): a standard measure of sleepiness. Sleep 9(4):519–524
Cassel W, Ploch T, Becker C et al (1996) Risk of traffic accidents in patients with sleep-disordered breathing: reduction with nasal CPAP. Eur Respir J 9(12):2606–2611
Cassel W, Ploch T, Kesper K (2011) Marburger Vigilanztest – VigiMar. In: Schulz H, Geisler P, Rodenbeck A (eds) Kompendium Schlafmedizin für Ausbildung, Klinik und Praxis. eco-med Verlagsgesellschaft, Landsberg
Giles TL, Lasserson TJ, Smith BH et al (2006) Continuous positive airways pressure for obstructive sleep apnoea in adults. Cochrane Database Syst Rev 3:CD001106
Grier RA, Warm JS, Dember WN et al (2003) The vigilance decrement reflects limitations in effortful attention, not mindlessness. Hum Factors 45(3):349–359
Head H (1923) The concept of nervous and mental energy. II. Vigilance: a psychological state of the nervous system. Br J Psychol 14:125–147
Hoddes E, Zarcone V, Smythe H et al (1973) Quantification of sleepiness: a new approach. Psychophysiology 10(4):431–436
Iacovides S, Avidon I, Bentley A, Baker FC (2009) Diclofenac potassium restores objective and subjective measures of sleep quality in women with primary dysmenorrhea. Sleep 32(8):1019–1026
Johns MW (1991) A new method for measuring daytime sleepiness: the Epworth sleepiness scale. Sleep 14(6):540–545
Lafrance C, Dumont M, Lesperance P, Lambert C (1998) Daytime vigilance after morning bright light exposure in volunteers subjected to sleep restriction. Physiol Behav 63(5):803–810
Le BO, Hoffmann G, Tecco J et al (2000) Mild to moderate sleep respiratory events: one negative night may not be enough. Chest 118(2):353–359
Lee MAM, Kleitman N (1923) Attempts to demonstrate functional changes in the nervous system during experimential insomnia. Am J Physiol 67:141–152
Levendowski D, Steward D, Woodson BT et al (2009) The impact of obstructive sleep apnea variability measured in-lab versus in-home on sample size calculations. Int Arch Med 2(1):2
Mackworth NH (1948) The breakdown of vigilance during prolonged visual search. Q J Exp Psychol 1:6–21
Mitler MM, Gujavarty KS, Browman CP (1982) Maintenance of wakefulness test: a polysomnographic technique for evaluation treatment efficacy in patients with excessive somnolence. Electroencephalogr Clin Neurophysiol 53(6):658–661
Mongrain V, Noujaim J, Blais H, Dumont M (2008) Daytime vigilance in chronotypes: diurnal variations and effects of behavioral sleep fragmentation. Behav Brain Res 190(1):105–111
Nerfeldt P, Nilsson BY, Mayor L et al (2010) A two-year weight reduction program in obese sleep apnea patients. J Clin Sleep Med 6(5):479–486
Peter JH (1988) Therapy of Sleep Disordered Breathing (personal communication)
Peter JH, Cassel W, Ehrig B et al (1990) Occupational performance of a paced secondary task under conditions of sensory deprivation. II. The influence of professional training. Eur J Appl Physiol Occup Physiol 60(4):315–320
Ploch T, Kemeny C, Gilbert G et al (1993) Significance of a screening questionnaire for diagnosis of sleep apnea. Pneumologie 47(Suppl 1):108–111
Sanchez AI, Martinez P, Miro E et al (2009) CPAP and behavioral therapies in patients with obstructive sleep apnea: effects on daytime sleepiness, mood, and cognitive function. Sleep Med Rev 13(3):223–233
Schwarzenberger-Kesper F, Becker H, Penzel T et al (1987) Excessive daytime sleepiness in apnea patients – diagnostic significance and objective assessment using the vigilance test and synchronous EEG recording during the day. Prax Klin Pneumol 41(10):401–405
Scott WA, Whitwam JG, Wilkinson RT (1983) Choice reaction time. A method of measuring postoperative psychomotor performance decrements. Anaesthesia 38(12):1162–1168
Van Dongen HP, Dinges DF (2005) Sleep, circadian rhythms, and psychomotor vigilance. Clin Sports Med 24(2):237-viii
Verster JC, Pandi-Perumal SR, Streiner DL (2008) Sleep and Quality of Life in Clinical Medicine. Humana Press
Weeß HG, Sauter C, Geisler P et al (2000) Vigilanz, Einschlafneigung, Daueraufmerksamkeit, Müdigkeit, Schläfrigkeit – Diagnostische Instrumentarien zur Messung müdigkeits- und schläfrigkeitsbezogener Prozesse und deren Gütekriterien. Somnologie 4:20–38
Williams HL, Granda AM, Jones RC et al (1962) EEC-frequency and finger pulse volume as predictors of reaction time during sleep loss. Electroencephalogr Clin Neurophysiol 14:64–70
Wise MS (2006) Objective measures of sleepiness and wakefulness: application to the real world? J Clin Neurophysiol 23(1):39–49
Acknowledgment
We wish to express our gratitude to Dipl.-Psych. Bettina Niess who contributed substantially to data collection, and Dr. Eckhard Fuchs, Dipl.-Ing. Frank Schüttler, Carola Becker, Avelke Edel, Wilma Littel, Petra Mayr, Christa Nau, Daniela Schach, Agata Scherer, Dirk Stawenow, Nicole Stawenow, and Ewa Tympel who all worked with the VigiMar over the years and helped to develop it to its present state.
Conflict of interest
The corresponding author states that there are not conflicts of interest.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Cassel, W., Ploch, T., Kesper, K. et al. Vigilance in patients with obstructive sleep apnea and surgical patients. Somnologie 15, 97–104 (2011). https://doi.org/10.1007/s11818-011-0512-2
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11818-011-0512-2