Phénomène de Raynaud primaire lorsque la nifédipine ou l'amlodipine n'a pas contrôlé la fréquence des crises
Dans le phénomène de Raynaud primaire, un inhibiteur calcique est le traitement oral de première ligne standard. Lorsque ce traitement ne réduit pas suffisamment la fréquence des crises vasospastiques, la question clinique devient : quelle est l'étape suivante appropriée ?
La condition d'échec
Le traitement précédent — nifédipine (libération prolongée) ou amlodipine — n'a pas atteint l'objectif de réduction de la fréquence des crises du phénomène de Raynaud. Cet objectif thérapeutique non atteint est le déclencheur de l'escalade vers la prochaine ligne de protocole.
References
DOI: 10.1177/1759720X17740074
- For the practicing rheumatologist, PDE5 inhibitors are therefore probably the most important recent advance in the treatment of ‘uncomplicated’ RP.
- The evidence base for other oral therapies for RP is very weak, other drugs sometimes prescribed include angiotensin-converting enzyme (ACE) inhibitors, angiotensin II receptor antagonists, α blockers, nitrates, and the selective serotonin receptor uptake inhibitor fluoxetine.
- Fluoxetine has the advantage of not being associated with same vasodilatory side effects as the other drugs mentioned above and may therefore be beneficial in patients intolerant to other therapies.
- PDE5 inhibitors conferred benefit in terms of the mean Raynaud’s Condition Score which decreased, the daily frequency of RP attacks which decreased and the daily duration of RP attacks which decreased.
- 12 weeks’ treatment with losartan conferred benefit in terms of frequency and severity of RP attacks (more so in patients with PRP).
- Frequency and severity of attacks fell on fluoxetine and the authors concluded that larger and placebo-controlled trials were indicated.