If atrial fibrillation with pre-excitation occurs, treatment options include procainamide, flecainide, propafenone, dofetilide, and ibutilide, since these medications slow conduction in the accessory pathway causing the tachycardia and should be administered before considering electrical cardioversion. Intravenous amiodarone may also convert atrial fibrillation and/or slow the ventricular response. Surgery
The Canadian Cardiovascular Society (CCS) recommends surgical intervention for these indications:
Limited exercise capacity (NYHA III-IV)
Increasing heart size (cardiothoracic ratio greater than 65%)
Important cyanosis (resting oxygen saturation less than 90% - level B)
Severe tricuspid regurgitation with symptoms
Transient ischemic attack or strokeThe CCS further recommends patients who require operation for Ebsteins anomaly should be operated on by congenital heart surgeons who have substantial specific experience and success with this operation. Every effort should be made to preserve the native tricuspid valve. History
Ebsteins anomaly was named after Wilhelm Ebstein, who in 1866 described the heart of the 19-year-old Joseph Prescher. References


== External links ==
Abnormal coloring
Redness of the sclera is typically caused by eye irritation causing blood vessels to expand, such as in conjunctivitis ("pink eye"). Episcleritis is a generally benign condition of the episclera causing eye redness. Scleritis is a serious inflammatory disease of the sclera causing redness of the sclera often progressing to purple. Yellowing or a light green color of the sclera is a visual symptom of jaundice. In cases of osteogenesis imperfecta, the sclera may appear to have a blue tint, more pronounced than the slight blue tint seen in children. The blue tint is caused by the showing of the underlying uveal tract (choroid and retinal pigment epithelium). In very rare but severe cases of kidney failure and liver failure, the sclera may turn black. See also
Extraocular implant
Scleral tattooing
Sclerotomy

Notes
References
External links

Histology image: 08008loa – Histology Learning System at Boston University
Atlas image: eye_1 at the University of Michigan Health System—"Sagittal Section Through the Eyeball"
MedlinePlus Encyclopedia: 002295