Multiple mathematical equations inform the practice of transfusion medicine. These equations apply to a wide range of topics: dosage of blood products, calculation of fluid volumes, and even specific treatment decisions (e.g. corrected count increment for determination of platelet refractoriness). The calculation of these equations can be complicated, prone to error, and time-consuming. A trusted source is needed to accurately perform these calculations 24 hours a day without error and without monetary cost.

We sought to build internet-enabled calculators relevant to the practice of transfusion medicine.

We partnered with MDCalc, an online host of medical calculators with 1 million monthly users in 196 countries, to design and host the calculators.

The calculators guide users in the application of transfusion medicine equations by providing indications for use, inputs for the equations variables, error-checking, warnings for bad inputs, and interpretive guidance of the result. The following calculators were built: blood volume, corrected count increment (CCI), plasma dosage, cryoprecipitated antihemophilic factor dosage, approximate number of units for compatibility testing, maternal-fetal hemorrhage Rh(D) immune globulin dosage, intrauterine RBC transfusion dosage, neonatal polycythemia partial exchange, theoretical removal of a substance by plasmapheresis, sickle cell RBC exchange volume, peripheral blood stem cell collection, and a calculator relevant to donor lymphocyte infusion.

Clinicians can now utilize this reputable and highly visible online source to access these common transfusion medicine equations at any time with an internet-enabled device (https://www.mdcalc.com/search?filter=transfusion+medicine).

多个数学方程式告知了输血医学的实践。这些方程式适用于广泛的主题：血液制品的剂量，体液量的计算，甚至是具体的治疗决策（例如，用于确定血小板难治性的校正计数增量）。这些方程式的计算可能很复杂，容易出错并且很耗时。需要可靠的来源来一天24小时准确无误地进行这些计算，并且不会造成金钱损失。

我们试图建立与互联网上与输血医学实践有关的计算器。

我们与医学计算器在线托管商MDCalc合作，设计并托管了该计算器，该计算器在196个国家/地区拥有每月100万的月度用户。

该Ç alculators通过提供无效输入，结果的解释指引，以便用于方程变量，错误检查的指示，输入，警告指导输血医学公式的应用程序的用户。建立了以下计算器：血容量，校正计数增量（CCI），血浆剂量，低温沉淀抗血友病因子剂量，用于相容性测试的近似单位数，母婴出血Rh（D）免疫球蛋白剂量，子宫内RBC输血剂量，新生儿红细胞增多症部分交换，理论上通过血浆置换去除某种物质，镰状细胞RBC交换量，外周血干细胞收集以及与供体淋巴细胞输注有关的计算器。

现在，临床医生可以利用具有互联网功能的设备（https://www.mdcalc.com/search?filter=transfusion+medicine），随时利用这一知名且高度可见的在线资源来访问这些常见的输血医学方程式。