<prompt> Which of the following is NOT true about electroconvulsive therapy ECT?Mainly used for the treatment of major depressive disorderNo absolute contraindications to the use of ECTShould not be used in pregnancyPheochromocytoma is a relative contraindication  <response>: Between 80 and 90 of all ECT treatments are performed for the treatment of major depressive disorder. There are no absolute contraindications to the use of ECT. With appropriate preparation, ECT can be used effectively and safely in both pregnant and elderly patients. Pheochromocytoma is a relative contraindication for ECT. Ref: Loosen P.T., Shelton R.C. 2008. Chapter 18. Mood Disorders. In M.H. Ebe, P.T. Loosen, B. Nurcombe, J.F. Leckman Eds, CURRENT Diagnosis Treatment: Psychiatry, 2e. 