|
Controlled studies of stress testing using the tilt table or heart rate variability analysis in patients with fibromyalgia |
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| Reference |
Type of stress test |
Number of patients |
Number of controls |
Main conclusion |
|
|
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| Martinez-Lavin and colleagues, 1997 [18] |
Active orthostatic stress |
19 |
19 |
Orthostatic sympathetic derangement |
| Bou-Holaigah and colleagues, 1997 [19] |
Head-up tilt table test |
20 (17 female) |
20 (18 female) |
Hypotension in 60% of patients (0% in controls) |
| Raj and colleagues, 2000 [13] |
Head-up tilt table test |
17 |
14 |
Positive test in 64% of patients and 21 controls |
| Naschitz and colleagues, 2001 [20] |
'Discriminant score' during head-up tilt table test |
38 (67% female) |
30 with chronic fatigue syndrome (58% female), 37 normal (65% female) |
Discriminant score different in fibromyalgia versus chronic fatigue syndrome |
| Friederich and colleagues, 2005 [21] |
Mental stress, passive orthostatism |
28 |
15 |
Less sympathetic activation |
| Furlan and colleagues, 2005 [16] |
Head-up tilt table test, muscular sympathetic nerve activity |
16 (15 female) |
16 (15 female) |
Decreased sympathetic response |
Martinez-Lavin Arthritis Research & Therapy 2007 9:216 doi:10.1186/ar2146 |
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