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Formula Suggestions

Let us know which new formula you would like to see included in MedCalc or how we can enhance existing formulas.

4701 results found

  1. 1 vote
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  2. minute volume correction according to PaCO2

    There is a interesting formula for minute volume correction according to PaCO2:

    Desired MV = (actual MV x actual PaCO2)/calculated PaCO2

    MV can be splited - MV = Tidal volume x respiratory rate; this helps to simplify calculations when you have only RR.

    calculated PaCO2 is derived from the Winters formula.

    It works for controled ventilation and some types of SIMV.

    2 votes
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  3. Metro Ticket Calculator

    (SASL = Swiss Liverpool Association)

    1 vote
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  4. Mangled Extremity Severity Score (MESS)

    Mangled Extremity Severity Score (MESS): Estimates viability of an extremity after trauma, to determine need for salvage vs empiric amputation.

    70 votes
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  5. Toronto Sore Throat Rule

    Also see McIsaac and Centor

    1 vote
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  6. MAC values for Isoflurane, Sevoflurane and desflurane

    Input variables would be Agent (gas), expired gas concentration and age.
    Calculated output would be age corrected MAC values for agent in 100% oxygen, 50% N2O and 67% N2O.
    option to input age, agent and % expired N2O and generate a table of expired gas concentration in % to give age corrected MACs of 0.25, 0.5, 0.75, 1.0, 1.5 and 2.0

    27 votes
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  7. Lung Compliance & Resistance

    Various lung compliance formulas such as:

    dFiO2 = ([80 / a/A ratio + PCO2 / 0.8] / 713) * 100

    CTV = exhaled TV - 3*(PAP - PEEP)

    Static compliance = CTV / (PAP - PEEP)

    Dynamic compliance = CTV / (plateau pressure - PEEP)

    31 votes
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  8. Local Anesthetics Table

    (onset, duration, max dose) both in subcutaneous administration and neuraxial anesthesia

    116 votes
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  9. LEMON score (airway assessment)

    Reference ATLS Manual 8th Edition. or the EMJ (emergency medical journal) 2005 22: 99-102

    5 votes
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    1 comment  ·  Admin →
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  10. Kussmaul

    Acidosis Score

    1 vote
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  11. Kings College Criteria

    Used in acetaminophen poisoning to determine the need for a liver transplant. Parameters are pH < 7.3, PT > 100s (INR > 65), Cr > 3.4.
    Would be nice to see it on here.

    58 votes
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  12. 1 vote
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  13. 107 votes
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  14. 9 votes
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  15. 1 vote
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  16. 1 vote
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  17. Heparin Therapy

    http://www.annals.org/content/119/9/874.full
    Raschke RA, Reilly BM, Guidry JR, Fontana JR, Srinivas S. The weight-based heparin dosing nomogram compared with a “standard care” nomogram. A randomized controlled trial. Ann Intern Med. 1993;119:874-81. [PMID: 8214998]

    2 votes
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  18. Hard-Up

    Acidosis Score

    1 vote
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  19. 7 votes
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  20. 6 votes
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    1 comment  ·  New Formulas  ·  Admin →
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