| The Effect of a Left Stellate Ganglion Block on Left Ventricular Function. |
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Jeong Uk Han, Cheong Kweon Chung, Tae Jung Kim, Choon Soo Lee, Young Deog Cha, Je Dong Oh, Hyun Kyung Lim, Jeong Kee Seo, Dea Hyeok Kim, Chul Ho Lee |
1Department of Anesthesiology, College of Medicine, Inha University, Inchon, Korea.
2Department of Cardiology and Occupational Medicine, College of Medicine, Inha University, Inchon, Korea. |
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| Abstract |
BACKGROUND
A Stellate ganglion block (SGB) is a sympathetic nerve block method which has been used most frequently in pain clinics due to its wide range of indications. However, SGB leads to regional sympathetic denervation of the heart and to changes in the hemodynamics. The aim of this study was to compare hemodynamic effects as well as echocardiographic changes after a left SGB (LSGB).
METHODS
Fourteen healthy male volunteers were studied. The LSGB was performed with 1% mepicacaine 6 ml. Arterial blood pressure, electrocardiographic and echocardiographic variables were measured before the LSGB, 15 and 30 minutes after the LSGB.
RESULTS
Arterial blood pressure, ejection fraction and transmitral inflow velocity variables showed no significant changes compared to pre-LSGB values. P-P interval increased significantly 15 minutes after the LSGB, and the Q-T interval increased significantly 30 minutes after the LSGB.
The diastolic pulmonary venous flow velocity decreased significantly 15 minutes after the LSGB.
CONCLUSIONS
These results showed that a LSGB decreased the heart rate without detrimental changes of left ventricular relaxation in healthy male volunteers. |
| Key Words:
Anesthetic techniques: stellate ganglion block; Heart: left ventricular function; Monitoring: echocardiography |
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