1Margo A. Halm is a nurse scientist consultant in Portland, Oregon.
Corresponding author: Margo A. Halm, PhD, RN, NEA-B, Portland, Oregon (email: [email protected]).
A regular feature of the American Journal of Critical Care, Clinical Evidence Review unveils available scientific evidence to answer questions faced in contemporary clinical practice. It is intended to support, refute, or shed light on health care practices where little evidence exists. We welcome letters regarding this feature and encourage the submission of questions for future review.
To purchase electronic or print reprints, contact American Association of Critical-Care Nurses, 27071 Aliso Creek Road, Aliso Viejo, CA 92656. Phone, (800) 899-1712 or (949) 362-2050 (ext 532); fax, (949) 362-2049; email, [email protected].
