Peripheral Arterial Tonometry (PAT) Evaluation of Sleep in Fibromyalgia

NCT ID: NCT01151163

Last Updated: 2011-02-08

Basic Information

• Recruitment Status: UNKNOWN
• Total Enrollment: 100 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2011-01-31
• Study Completion Date: 2012-07-31

Brief Summary

Fibromyalgia syndrome (FMS) is characterized by the presence of widespread pain, chronic fatigue and typical sleep disturbances. The purpose of the current study is to investigate the nature of sleep disturbance in FMS, using a novel technology. Peripheral arterial tonometry is a method by which peripheral arterial tone is measured non - invasively using in an ambulatory setup during sleep. The information collected reflects autonomic nervous system function and respiratory changes during sleep. We intend to utilize this technique in order to improve our understanding of the interrupted patterns of sleep in FMS and as a possible biomarker which may be used in the future to follow up FMS patients and their response to treatment.

Detailed Description

Fibromyalgia Syndrome (FMS) is a clinical entity characterized by the presence of chronic, widespread pain and tenderness throughout the musculoskeletal system. FMS is considered to be a prototype of central pan syndromes, conditions in which augmentation of pain processing by the central nervous system in a major feature (1;2). As such, FMS overlaps with a number of similar "functional" disorders, including TMJD, IBS, Interstitial cystitis, Gulf war syndrome, chronic fatigue syndrome etc (3-5).

A major clinical feature of FMS is the presence of chronic fatigue, which is typically accompanied by a severely disrupted sleep pattern. Difficulty falling asleep, frequent awakening and non-refreshing sleep are all features classically reported by FMS patients. In addition, a number of classic sleep disturbances have been identified among FMS patients such as alpha - wave intrusion, disrupting normal stage IV sleep, as well as nocturnal falls in oxygen saturation (6). Notably, disturbed sleep may contribute not only to chronic fatigue, but also to enhanced pain processing as well as depression in FMS patients (7). Thus, pain inhibitory functions of the CNS, such as the process of Diffuse Noxious Inhibitory Control (DNIC) appear to be impaired in by sleep disruption (8).

Considerable interest has focused on the role of sleep apnea in FMS, as a possible factor contributing to fatigue and pain. Overt obstructive sleep apnea has been diagnosed in some patients (9) while more subtle disruptions of upper airway dynamics, such as increased upper airway pressure, not leading to total airway collapse, has been detected in many patients (10). Other researchers however have challenged the association of FMS with sleep apnea (11).

Autonomic dysfunction is another important clinical manifestation of FMS with common symptoms including presyncope / syncope, palpitations on standing and dizziness (12). Postural Orthostatic Tachycardia Syndrome (POTS) is another autonomic disorder which clinically overlaps with FMS (13).

Traditional polysomnography is a time-consuming and costly procedure, and hence, relatively few FMS patients are formally evaluated for sleep disorders in clinical practice.

The Watch-PATTM100 is a non-invasive device, which utilizes peripheral arterial tone (PAT), reflecting changes in autonomic nervous system function, as a marker for identifying and documenting respiratory disturbances during sleep. The PAT signal is acquired through a non-invasive probe attached to the finger during the sleep. Parameters measured include oxygen saturation, heart rate, sleep and wake states, REM and non-REM sleep.

The purpose of the current study is to use Peripheral Arterial Tonometry (PAT) in order to compare both disturbed sleep breathing and autonomic dysfunction in fibromyalgia patients and healthy controls.

Conditions

Fibromyalgia

Study Design

• Observational Model Type: CASE_CONTROL
• Study Time Perspective: PROSPECTIVE

Eligibility Criteria

Inclusion Criteria

Fibromyalgia group:

• Patients over 18 years of age
• Fulfilling ACR 1990 criteria for classification of Fibromyalgia

Exclusion Criteria

• Patients treated with benzodiazepines

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Tel-Aviv Sourasky Medical Center

OTHER_GOV

Sponsor Role: lead

Responsible Party

Institute of Rheumatology, Tel Aviv Sourasky medical center

Principal Investigators

Jacob N Ablin, MD

Role: PRINCIPAL_INVESTIGATOR

Tel-Aviv Sourasky Medical Center

Locations

Tel Aviv Sourasky medical center

Tel Aviv, , Israel

Site Status: NOT_YET_RECRUITING

Tel Aviv Sourasky Medical Center

Tel Aviv, , Israel

Site Status: RECRUITING

Countries

Israel

Facility Contacts

Jacob N Ablin, MD

Role: primary

kobby.ablin@gmail.com

972-3-6973668

Jacob N Ablin, MD

Role: primary

ajacob@tasmc.health.gov.il

972-3-6973668

Other Identifiers

0154-10-TLV

Identifier Type: -

Identifier Source: org_study_id