Korean J Anesthesiol.  2010 Jan;58(1):56-60. 10.4097/kjae.2010.58.1.56.

The changes of heart rate variability after unilateral stellate ganglion block

• Kim JJ
• Chung RK
• Lee HS
• Han JI

• KMID: 2031781
• DOI: http://doi.org/10.4097/kjae.2010.58.1.56

Abstract

BACKGROUND
The effect of the unilateral stellate ganglion block (SGB) on cardiovascular regulation remains controversial. We wished to evaluate the changes in heart rate variability (HRV) after a unilateral stellate ganglion block in patients with head and neck pain in the present study. METHODS: Patients with head and neck pain (n = 89) were studied. HRV was determined before and after a C6 unilateral stellate ganglion block (right-sided SGB, 40; left-sided SGB, 49) using a paratracheal technique with 1% mepivacaine (6 ml). RESULTS: There were no significant differences in HRV indices before and after right-sided SGB. The log scale of power in the high frequency range (lnHF) was increased and ratio of power in the low frequency range (LF) to power in the high frequency range (HF) ratio was decreased after left-sided SGB. CONCLUSIONS: These results demonstrated that left-sided SGB increased parasympathetic activities in patients with head and neck pain.

Keyword

Heart rate; Mepivacaine; Stellate ganglion

MeSH Terms

Head
Heart
Heart Rate
Humans
Mepivacaine
Neck Pain
Stellate Ganglion
Mepivacaine