Monday, 18 Nov 2019

You are here

Cochrane Review: Calcium Channel Blocker Efficacy in Raynaud's

The Cochrane Database has published its review of calcium channel blockers (CCB) in Raynaud's phenomenon, showing CCBs may be useful in reducing the frequency, duration, severity of attacks, pain and disability associated with Raynaud's phenomenon, especially with primary Raynaud's.

In their review they distinguished primary Raynaud's phenomenon (not associated with underlying disease) from secondary Raynaud's phenomenon (associated with connective tissue disorders).

They analyzed data from 1946 to 2017, specifically looking for randomized controlled trials (RCTs) comparing calcium channel blockers versus placebo.

They identified 38 RCTs (33 cross-over RCTs) with an average duration of 7.4 weeks and 982 participants.

Nine of the identified trials studied patients with primary Raynaud's phenomenon (N = 365), five studied patients with secondary Raynaud's phenomenon (N = 63), and the rest examined a mixture of patients with primary and secondary Raynaud's phenomenon (N = 554).

Looking at both primary and secondary Raynaud's phenomenon, evidence (moderate quality) from 23 trials with 528 participants shows CCBs were superior to placebo in reducing the frequency of attacks, severity of attacks, and Raynaud's pain (low-quality evidence).

The most common side effects were headache, dizziness, nausea, palpitations, and ankle edema. However, in all trials, no serious adverse events (death or hospitalization) were reported.

Randomized controlled trials with evidence of low to moderate quality showed that CCBs (especially the dihydropyridine class) may be useful in reducing the frequency, duration, severity of attacks, pain and disability associated with Raynaud's phenomenon. Higher doses may be more effective than lower doses and these CCBs may be more effective in primary RP. Although there were more withdrawals due to adverse events in the treatment groups, no serious adverse events were reported.

Disclosures: 
The author has no conflicts of interest to disclose related to this subject

Add new comment

More Like This

Part 1:  The “P” in Prednisone stands for Poison...and Other Pearls

Everyone has life hacks.  Years of experience and doing the same things repetitively allow us to figure out little tricks to make life easier. A rat in a maze, finding itself at a dead end, will back up and search for a clearing. If this rat encounters its neighbor, it will transmit that information so the second rat won’t make the same mistake.

Protective Effects of ASA and Vasodilators in Systemic Sclerosis

A large cohort study suggests that the use of vasodilators and aspirin (ASA) in systemic sclerosis (SSc) may yield favorable  cardiovascular outcomes.

Myositis Patients at High Risk of Opportunistic Infections

Among patients with systemic rheumatic diseases, the highest incidence of opportunistic infections was seen in those with polymyositis/dermatomyositis (PM/DM), Taiwanese researchers found.

Warfarin Superior to Xarelto in Antiphospholipid Syndrome

A 3 year, multicenter, European, study shows that rivaroxaban was inferior to warfarin in preventing thrombosis in patients with antiphospholipid syndrome (APS) according to the Annals of Internal Medicine. Thus despite the inconvenience of warfarin, it remains the best option for patients with APS.

Declining Trends in Antineutrophil Cytoplasmic Autoantibody–Associated Vasculitis Mortality in the USA

Annals of Internal Medicine reports that age-adjusted mortality rates for antineutrophil cytoplasmic autoantibody–associated vasculitides (AAV) have improved over time - with a decline of nearly 2 percent per year in the United States from 1999 to 2017. Nevertheless, long-term outcomes continue to lag behind mortality rates of the general population.