Formula Suggestions
Let us know which new formula you would like to see included in MedCalc or how we can enhance existing formulas.
12 results found
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Loss of dilutions with MedCalc pro 2.6
After updating Medcalc pro to version 2.6 all my drug dilutions (n=50) are lost although I had activated backup in the iCloud. I still have backups of the files "FormulaNotes.plist" and "InfusionDrugs.dat" stored on my Mac but I cannot synchronize these files with Medcalc pro using iTunes.
Is there any way to transfer these files into Medcalc pro 2.6?
5 votesFixed in 2.6.1, sorry for the trouble!
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Incorrect GRACE score
If you enter 69y, HR 110bpm, SBP 120, krea 2, Killip 4 and yes to all the questions you will get very optimistic 1.9% probability of death (the correct value should be about 70%)
4 votes -
Canadian Head CT rule
In the german localisation, the "amnesia"-checkbox reads "Anterograde Amnesie". According to the article in Lancet that is linked in the formula, "Amnesia before impact >30 min [is associated with] medium risk (for brain injury on CT)". That would translate to retrograde amnesia, not anterograde amnesia. I'm not sure if this is specific to the german localisation, but maybe it's worth checking anyway?
Thank you for an otherwise marvellous tool!2 votesThanks for the hint, this has been wrongly translated to German as well as French, will be fixed in the next update!
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Schwartz formula constant
The newest recommendations support using a K of 0.413 for all pediatric patients.
2 votesMedCalc 3 uses 0.413 in the Schwartz equation
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information update
Does Medcalc require internet access or is it fully downloaded to an iphone.
1 voteMedCalc is fully downloaded to your phone, only the News section needs an internet connection.
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Framingham score incorrect
If I enter data into the medcalc calculator, it gave a score of 3.5%. Whereas it I entered the same data into the calculator on the NIH and AHA websites, it scored as <1%. Unsure of where the error is, but there is one. Data entered was 36 year old male, non smoker, no diabetes, cholesterol 232, HDL 62, systolic 118.
1 voteDifferent scoring is used, please see my comment
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How do I set device for SI units
Just downloaded on my iPhone but formulas eg creat clearance coming up mg/dL rather than mmol/L
1 voteYou can set the units from the keyboard, there are usually several options available and your last choice will be remembered.
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IBW formula has weird rounding
When I calculate the IBW for a male that is 72" tall myself, using the formula 50 + 2.3(12), I get an IBW of 77.6 kg.
This program produces an IBW of 77.7, using the same formula. What gives? It's a minor difference, but it doesn't make any sense.
1 voteThis is a rounding error because we internally use centimeters in this place for technical reasons. I’ll increase the precision so this discrepancy goes away.
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PAO2-PaO2
This formula has an error.
The PaO2 is written like PAO2 making confusion.1 voteFixed in MedCalc 3.0.8
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Canadian CT Head Rule
Unlike your competitor, MDCalc some of your formulas don't have context or inclusion criteria. For instance the Canadian head rule should be only used if LOC, amnesia or transient confusion. Without those qualifiers you would consider CT if insignificant head injury in >65 year old. This is explicitly stated in the original study.
My residents have been misapplying these formulas
Quite a few of your formulas don't have explanatory notes if patients should be included or excluded from use.
1 voteIn MedCalX v 3.2, CCT-Head now makes you confirm inclusion criteria.
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1 vote
The CRB-65 has been developed in cases where BUN is not available and has been shown to perform comparably to the CURB-65: https://www.ncbi.nlm.nih.gov/m/pubmed/16789984/
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MEES
Fehler bei Berechnung der MEES-Score, wenn MEES2 (bei Übergabe) kleiner als MEES1 (Notarzt) ist = d.h. wenn sich der Zustand des Patienten verschlechtert hat! Umgekehrt (bei Besserung) gibts keine Probleme. Wenn möglich bitte beheben. Danke. VG
0 votes
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