Most Cost-Effective Procedure in Treating Painful Facial Tics is the Least One Utilized in Treating Trigeminal Neuralgia Patients

by Kathy Jones on  August 23, 2014 at 10:34 PM General Health News
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A new study published in the journal Neurosurgery reveals that doctors often fail to opt for the most cost-effective procedure when treating patients who require surgery for facial pain caused by trigeminal neuralgia.
 Most Cost-Effective Procedure in Treating Painful Facial Tics is the Least One Utilized in Treating Trigeminal Neuralgia Patients
Most Cost-Effective Procedure in Treating Painful Facial Tics is the Least One Utilized in Treating Trigeminal Neuralgia Patients

Percutaneous stereotaxic rhizotomy (PSR) provides good pain relief at much lower cost than other types of surgical treatments for trigeminal neuralgia, according to the report by Dr. Siviero Agazzi and colleagues of University of South Florida, Tampa. The researchers write, "PSR, despite being the most cost-effective, is by far the least utilized treatment modality."

Surgical Options for Trigeminal Neuralgia... Trigeminal neuralgia is a relatively common chronic pain condition, especially among older adults. Sometimes called "tic douloureux," trigeminal neuralgia is associated with a typical pattern of painful facial tics. Pain is thought to be caused by blood vessels placing pressure on the trigeminal nerve in the face.

When pain from trigeminal neuralgia can't be adequately controlled by medications, various surgical procedures may be recommended. To compare the cost-effectiveness of different surgical options, the researchers analyzed data on Medicare claims for trigeminal neuralgia during 2011. Of 1,582 patients with trigeminal neuralgia, 94 patients—six percent of the total—underwent surgical treatment.

Fifty-one percent of surgically treated patients underwent a procedure called microvascular decompression (MVD), in which a pad is placed to relieve pressure on the nerve. Forty-two percent underwent stereotactic radiosurgery (SRS), a less-invasive "gamma knife" procedure. The remaining seven percent of patients underwent PSR—a percutaneous operation in which the nerve fibers causing pain are destroyed by a needle inserted from the cheek all the way into the skull.

But although PSR was the least commonly used procedures, it was the least expensive, with an average weighted cost of about $3,900. That was about one-tenth the cost of the other two options: about $40,000 for MVD and $38,000 for SRS.

...Show Wide Variations in Cost-Effectiveness Based on published data, all three procedures reduced pain from trigeminal neuralgia, with some differences in effectiveness. Over ten years, average "quality-adjusted life-years" (QALYs)—reflecting one year free of pain and without pain medications—were 8.2 for MVD, 4.9 for SRS, and 6.5 for PSR.

After accounting for these differences, PSR was by far the most cost-effective option. Cost per QALY gained was about $600 with PSR, compared to $4,900 for MVD and $7,800 for SRS. Percutaneous stereotaxic rhizotomy was eight times more cost-effective than MVD and 13 times more cost-effective than SRS.

Dr. Agazzi and coauthors emphasize that their Medicare claims study is only preliminary. It was based on small numbers of patients—including just seven treated with PSR. It also included limited data on outcomes and complications, such as facial numbness. But within those limitations, the results suggest that PSR is an "under-utilized" procedure for patients with painful facial tics. The PSR procedure provides comparable pain relief, at a fraction of the cost of more commonly performed procedures. While further research is needed, Dr. Agazzi and colleagues note their findings are consistent with the only two previous studies evaluating the cost-effectiveness of surgical options for trigeminal neuralgia.
Source: Eurekalert

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