Sympathectomy is effective treatment of Long QT Syndrome

Current Medical Diagnosis and Treatment 2007 (Current Medical Diagnosis and Treatment)
Stephen J. McPhee, Maxine A. Papadakis, Lawrence M. Tierney

page 390:
5. Long QT Syndrome
Because this is a primary electrical disorder, usually with no evidence of structural heart disease or LV dysfunction, the long-term prognosis is excellent if arrhytmia is controlled. Long-term treatment with beta-blockers, permanent pacing, or left cervicothoracic sympathectomy is frequently effective.

Disorders associated with autonomic insufficiency

Greenspan's Basic & Clinical Endocrinology (Lange Medical Books)
David G. Gardner, Dolores M. Shoback
page 437
Table 12 - 6. Disorders associated with autonomic insufficiency
Familial dysautonomia
Shy-Drager Syndrome
Parkinson's disease
Tabes dorsalis
Cerebrovascular disease
Diabetes melitus
Idiopathic orthostatic hypotension
Sympathectomy

Decrease in peripheral vascular resistance

AWHONN's Perinatal Nursing: Co-Published with AWHONN (Simpson, Awhonn's Perinatal Nursing)
Kathleen Rice Simpson, Patricia A Creehan

page 63:
Epidural anesthesia causes a sympathectomy and a marked decrease in peripheral vascular resistance that may cause a decrease in venous return, resulting in decreased cardiac output.

Orthostatic hypotension - Sequelae of surgical sympathectomy

Current Diagnosis and Treatment: Emergency Medicine (Current Emergency Diagnosis and Treatment)
C. Keith Stone, Roger L. Humphries, Sep 14, 2007
page 270
Causes of orthostatic hypotension:
Sequelae of surgical sympathectomy

Nervous system dysfunction - Syncope

Harrison's Principles of Internal Medicine, 17th Edition (Harrison's Principles of Internal Medicine)
Anthony S. Fauci, Eugene Braunwald, Dennis L. Kasper, Stephen L. Hauser, Dan L. Longo, J. Larry Jameson, Joseph Loscalzo

page 139:
Section 3 - Nervous system dysfunction by Mark D. Carlson
Table 21 - 1
Causes of Syncope:
Sympathectomy