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2012 ; 1
(4
): 257-61
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Pulsed radiofrequency treatment for trigeminal neuralgia
#MMPMID24904811
Chua NH
; Halim W
; Beems T
; Vissers KC
Anesth Pain Med
2012[Spr]; 1
(4
): 257-61
PMID24904811
show ga
BACKGROUND: Pulsed radiofrequency (PRF) treatment is defined as the delivery of
short pulses of radiofrequency via a needle tip, which does not result in an
actual thermal lesions. There are mixed views regarding the use of PRF for
trigeminal neuralgia (TN). In our opinion, one of the main reasons for the
contrasting views is the insufficient PRF dose employed in previous studies. In a
recent study on the effects of PRF on resiniferatoxin-induced neuropathic pain in
an animal model, the anti-allodynic effects of PRF were significantly greater
when the PRF exposure duration was increased from 2 to 6 minutes. OBJECTIVES: The
primary objective of this retrospective study is to report the results for 36
consecutive patients who underwent PRF treatment for TN, for 6 minutes at 45 V at
a pulsed frequency of 4 Hz and a pulse width of 10 ms. PATIENTS AND METHODS: For
the study, we obtained procedural records of 36 consecutive patients. Their
current state of pain was evaluated over a telephonic survey and the
post-procedural data at 2, 6, and 12 months were retrieved thereafter from the
patient records. The main outcome measure was excellent pain relief (more than
80%), which was assessed at 2, 6, and 12 months. RESULTS: The percentages of
patients who showed excellent pain relief (> 80% pain relief) at 2, 6, and 12
months were 73.5% (25/34), 61.8% (21/34), and 55.9% (19/34), respectively. The
percentages of patients showing satisfactory pain relief (50-80% pain relief) at
2, 6, and 12 months were 14.7% (5/34), 17.6% (6/34), and 17.6% (6/34),
respectively, and those of patients showing less than satisfactory pain relief (<
50% pain relief) at 2, 6, and 12 months were 11.8% (4/34), 20.6% (7/34), and
23.5% (8/34), respectively. No complications were reported, and none of the
patients required hospitalization. CONCLUSIONS: PRF of the trigeminal ganglion
should be further evaluated as an alternative treatment method for TN.
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