The Nightingale Pledge, named in honour of Florence Nightingale, is a modified version of the Hippocratic Oath. Lystra Gretter and a Committee for the Farrand Training School for Nurses in Detroit, Michigan, created the pledge in 1893. Gretter, inspired by the work of Nightingale, the founder of modern nursing, credited the pledge to the work of her committee, but was herself considered "the moving spirit behind the idea" for the pledge.

I solemnly pledge myself before God
and in the presence of this assembly,
to pass my life in purity
and to practice my profession faithfully.
I will abstain from whatever is deleterious and mischievous,
and will not take or knowingly administer any harmful drug.
I will do all in my power to maintain
and elevate the standard of my profession,
and will hold in confidence
all personal matters committed to my keeping 
and all family affairs coming to my knowledge
in the practice of my calling.
With loyalty will I endeavor
to aid the physician in his work,
and devote myself to the welfare
of those committed to my care.