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        Cluster Headache Help and Support >> Medications, Treatments, Therapies >> should I be concerned
        
(Message started by: kevmd on Feb 19^th, 2008, 2:49pm)

Title: should I be concerned
Post by kevmd on Feb 19^th, 2008, 2:49pm

Just spoke to my neuro looking for something different and he is first, starting me on another prednisone taper before this last one even ended. HE also has me going up to 6x240 verap a day even after i told him my bp was 110 over 78. I do appreciate the prednisone again as it should give me a few days pf but I think this regime is not safe on top of the 600-900 of lithium a day. Getting o2 is proving to be a pain as well. You'd think nobody ever needed oxygen for medical purposes before. ANybody ever go up that high with verap and taken back to back pred tapers?

WHile, I am here, I have to check with you guys. THis has never happened to me before but I am getting attacks 5-10 minutes right after one has ended. It happed 4-5 times last night. There is no mistaken when one has ended. Then I try to go to sleep and it comes right back......There is;t enough imitrx in the world!!!!

Title: Re: should I be concerned
Post by Guiseppi on Feb 19^th, 2008, 5:21pm

The dose of verapamil sounds a little high to me, BUT, I know people go pretty high doseage wise to find relief. Stay in close contact with your doctor, if you start passing out everytime you stand up get back in to see him. (That's not a joke!!!!) The combination of lithium and verapamil is quite common.

As far as back to back prednisone tapers, it shouldn't be a big problem, it's not something you want to take for long periods of time but it's not a bad idea to keep you on while he waits for the verapamil to kick in. To my knowledge...(limited as that is).....I don't think the prednisone will interact badly with either lithium or verapamil.

The back to back headaches........that sucks. If I use only oxygen to abort a headache, they return in about 10-20 minutes. Now I take an oral cafergot, then start the oxygen. Oxygen chases it away, cafergot buys me up to 12 hours pain free time. Might be something to run by your doctor. Good luck!

Guiseppi

Title: Re: should I be concerned
Post by kevmd on Feb 19^th, 2008, 6:13pm

thanks for the input. I wish I could stay on the upper end of the pred taper for a longer period of time. Hopefully this taper brings me closer to the end. Thanks again

Title: Re: should I be concerned
Post by Bob_Johnson on Feb 19^th, 2008, 7:58pm

Read Rozen's comments on Verap dosing, on all meds for us, in general.

http://www.plainboard.com/ch/chtherapy.pdf

Here is a link to read and print and take to your doctor. It describes preventive, transitional, abortive and surgical treatments for CH. Written by one of the better headache docs in the U.S. (2002)
============
But print this portion and give to your doc:

Verapamil warning
« on: Aug 21st, 2007, 10:38am »

--------------------------------------------------------------------------------
I posted this information recently in the form of a news release but more details here.
__________________

Neurology. 2007 Aug 14;69(7):668-75.

Electrocardiographic abnormalities in patients with cluster headache on verapamil therapy.

Cohen AS, Matharu MS, Goadsby PJ.

Headache Group, Institute of Neurology, The National Hospital for Neurology and Neurosurgery, Queen Square, London, UK.

BACKGROUND: High dose verapamil is an increasingly common preventive treatment in cluster headache (CH). Side effects include atrioventricular block and bradycardia, although their incidence in this population is not clear. METHOD: This audit study assessed the incidence of arrhythmias on high dose verapamil in patients with cluster headache. RESULTS: Of three hundred sixty-nine patients with cluster headache, 217 outpatients (175 men) received verapamil, starting at 240 mg daily and increasing by 80 mg every 2 weeks with a check electrocardiogram (EKG), until the CH was suppressed, side effects intervened, or to a maximum daily dose of 960 mg. One patient had 1,200 mg/day. Eighty-nine patients (41%) had no EKGs. One hundred eight had EKGs in the hospital notes, and a further 20 had EKGs done elsewhere. Twenty-one of 108 patients (19%) had arrhythmias. Thirteen (12%) had first-degree heart block (PR > 0.2 s), at 240 to 960 mg/day, with one requiring a permanent pacemaker. Four patients had junctional rhythm, and one had second-degree heart block. Four patients had right bundle branch block. There was bradycardia (HR < 60 bpm) in 39 patients (36%), but verapamil was stopped in only 4 patients. In eight patients the PR interval was lengthened, but not to >0.2 s. The incidence of arrhythmias on verapamil in this patient group is 19%, and bradycardia 36%. CONCLUSION: We therefore strongly recommend EKG monitoring in all patients with cluster headache on verapamil, to observe for the potential development of atrioventricular block and symptomatic bradycardia.

PMID: 17698788 [PubMed]

« Reply #7 on: Today at 1:01am » WITH THANKS TO "MJ" FOR POSTING THIS EXPLANATION.

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The article summarized in layman terms from the website below.

http://www.personalmd.com/news.jsp?nid=607285

"Cluster Headache Treatment Poses Cardiac Dangers
Off-label use of verapamil linked to heart rhythm abnormalities, study finds

By Jeffrey Perkel
HealthDay Reporter

MONDAY, Aug. 13 (HealthDay News) -- People who use a blood pressure drug called verapamil to treat cluster headaches may be putting their hearts at risk.

That's the finding from a British study that found heart rhythm abnormalities showing up in about one in five patients who took the drug in this unapproved, "off-label" way.

"The good news is, when you stop the drug, the effect wears off," said study lead author Dr. Peter Goadsby, professor of neurology at University College London. "So, as long as doctors know about it, and patients with cluster headaches on verapamil know they need EKGs [electrocardiograms] done, it is a completely preventable problem."

The study is published in the Aug. 14 issue of Neurology.

In a review of the medical records of 217 patients given verapamil to treat their cluster headaches, a team led by Goadsby found that 128 had undergone an EKG, 108 of which were available in the medical records.

Of those 108 patients, about one in five exhibited abnormalities (mostly slowing) in the heart's conduction system -- the "natural pacemaker" that causes the organ to beat. Most of these cases weren't deemed serious, although one patient did end up having a pacemaker implanted to help correct the problem. In four cases, doctors took patients off verapamil due to their EKG findings.

One in three (34 percent) developed non-cardiac side effects such as lethargy and constipation.

"It is a very nice piece of work, because it provides commentary on a boutique [that is, niche and off-label] use of the drug," said Dr. Domenic Sica, professor of medicine and pharmacology in the Virginia Commonwealth University Health System. He was not involved in the study.

Cluster headache affects about 69 in every 100,000 people, according to the Worldwide Cluster Headache Support Group Web site. Men are six times more likely than women to be afflicted, and the typical age of onset is around 30. According to Goadsby, the disease manifests as bouts of very severe pain, one or many times per day, for months at a time, usually followed by a period of remission.

Verapamil, a calcium-channel antagonist drug, is approved by the U.S. Food and Drug Administration for the treatment of cardiac arrhythmias and high blood pressure. The medicine is typically given in doses of 180 to 240 milligrams per day to help ease hypertension.

However, the patients in this study received more than twice that dose for the off-label treatment of their cluster headaches -- 512 milligrams per day on average, and one patient elected to take 1,200 milligrams per day. The treatment protocol involved ramping up the dose from 240 milligrams to as high as 960 milligrams per day, in 80 milligram increments every two weeks, based on EKG findings, side effects, and symptomatic relief.

Many patients may not be getting those kinds of tests to monitor heart function, however: In this study cohort, about 40 percent of patients never got an EKG.

Given the typical dosage, Sica said he was surprised so many patients were able to tolerate such high amounts of the drug.

"When used in clinical practice for hypertension, the high-end dose is 480 milligrams," said Sica. "Most people cannot tolerate 480."

Dr. Carl Pepine, chief of cardiology at the University of Florida, Gainesville, was also "amazed" at the doses that were tolerated in this study. "The highest dose I ever gave [for cardiology indications] was 680 milligrams. This might give me more encouragement to use the drug at higher dose," he said.

But Sica said he thought cardiac patients -- the typical verapamil users -- were unlikely to tolerate the drug as well as the patients in this study, because verapamil reacts differently in older individuals, who are more likely to have high blood pressure, than in younger patients. The average patient in the United Kingdom study was 44 years old.

According to Sica, two factors would conspire to make older individuals more sensitive to verapamil. First, the metabolism of the drug is age-dependent, meaning that older individuals would tend to have higher blood levels of the drug, because it is cleared more slowly than in younger individuals.

Secondly, the conduction system of the heart (the natural "pacemaker" becomes more sensitive to the effects of verapamil with age, Sica said.

"It's likely that an older population would not be able to tolerate the same dose," he concluded.

According to Goadsby, the take-home message of this study is simple: Be sure to get regular EKGs if you are taking verapamil for cluster headaches. Goadsby recommended EKGs within two weeks of changing doses, and because problems can arise over time -- even if the dose doesn't change -- to get an EKG every six months while on a constant dose.

"The tests are not expensive, and they are not invasive," he said. "They are not in any way a danger to the patient."

For the most part, Goadsby said, should a cardiac problem arise, it will typically go away once the treatment is halted."

Title: Re: should I be concerned
Post by kevmd on Feb 19^th, 2008, 9:31pm

wow Bob! I never realiized this warning with verap. I will forward this to my dr. I'll go up to 1200 but not 1440 as my Dr had said.

Title: Re: should I be concerned
Post by E-Double on Feb 19^th, 2008, 10:04pm

they ( the bignames) also suggest using a standard release as opposed to the extended or sustained release verapamil. This change alone helped stabilize me for a bit way back when.