Jon ← MedCalX, the professional medical calculator for iOS My feedback 1 result found Qtc by heart rate, not RR 7 votes Vote 0 votes Vote Vote Vote We're glad you're herePlease sign in to leave feedback Signed in as (Sign out) Close Close 1 vote 2 votes 3 votes Remove votes You have left! (?) (thinking…) 0 comments · Formula Suggestions » Enhance Existing Formulas · Delete… · Admin → Jon shared this idea · Feb 1, 2016