The amount of compensatory sweating depends on the patient, the damage that the white rami communicans incurs, and the amount of cell body reorganization in the spinal cord after surgery.
Other potential complications include inadequate resection of the ganglia, gustatory sweating, pneumothorax, cardiac dysfunction, post-operative pain, and finally Horner’s syndrome secondary to resection of the stellate ganglion.
www.ubcmj.com/pdf/ubcmj_2_1_2010_24-29.pdf

After severing the cervical sympathetic trunk, the cells of the cervical sympathetic ganglion undergo transneuronic degeneration
After severing the sympathetic trunk, the cells of its origin undergo complete disintegration within a year.
http://onlinelibrary.wiley.com/doi/10.1111/j.1439-0442.1967.tb00255.x/abstract

Monday, April 23, 2012

Digital infrared thermal image after T2 sympathicotomy or T3 ramicotomy.

(A) Clear cut change of skin temperature after a T2 sympathicotomy. (B) An even distribution of skin temperature after ramicotomy.
Gossot and colleagues [8] analyzed a group of T2, T3, T4 sympathectomy patients in comparison with a group of patients undergoing a T2, T3, T4 ramicotomy and they reported no statistical difference regarding the incidence of CS between the two groups studied (72.2% and 70.9%). However in terms of the severity of CS (embarrassing, disabling) causing inconveniences to daily life, they reported 27% and 13% incidences in these two groups, respectively. These findings suggest that by preserving the sympathetic trunk, it was possible to reduce the severity of CS.
The preganglionic fibers of the sympathetic nerve to the arm originate mostly from the spinal segments T3–T6 and the postganglionic fibers of the sympathetic nerve to the arm originate from T2 and, to a lesser extent, the T3 ganglia [9]. This implies that the division of preganglionic fibers (rami communicantes) reduces the extent of denervation of the sympathetic nerve as compared with the division of postganglionic fibers (sympathetic trunk) in the treatment of palmar hyperhidrosis.
Sympathectomy or sympathicotomy is one of the procedures used to divide the sympathetic trunk. Sympathicotomy distinctively changes sympathetic nerve distribution in comparison with a ramicotomy. Figure 4A illustrates the clear-cut changes of skin temperature after a T2 sympathicotomy. However the overall sympathetic nerve distribution to the body is not markedly changed after a T3 ramicotomy because a T3 ramicotomy is a procedure that is used to divide one of the preganglionic fibers and to preserve the sympathetic trunk. Figure 4B illustrates an even distribution of skin temperature after T3 ramicotomy.

 http://ats.ctsnetjournals.org/cgi/content/full/78/3/1052#FIG4