In the text below the form there is more information about the dosage calculation.The warfarin dosing calculator estimates the warfarin maintenance dose based on patient data (weight and height for body surface area), target INR for control over coagulation and based on other bleeding risk factors such as (DVT or PE present or smoking).Creating an account is free and takes less than 1 minute.1. The normal clotting time (10-14 seconds) is compared to the control, the INR. All these are used in the dosing formula where … Determine each patient’s dosing needs by close monitoring of the INR response and consideration of the indication being treated. British Committee for Standards in Haematology - Guidelines on oral anticoagulation (warfarin): third edition - 2005 update. British Journal of Haematology 2006; 132 (3): 277-285.Copyright 2014 - 2020 The Calculator .CO   |  All Rights Reserved  |  Use of pharmacogenetic and clinical factors to predict the therapeutic dose of warfarinA formula to estimate the approximate surface area if height and weight be known 1916Examination of International Normalised Ratio (INR) imprecision by comparison of exact and approximate formulas. 2012 Feb;141(2 … After the 2 days, INR is measured and a new dosage is established.Patients that present a high risk of bleeding receive an Warfarin action is based on the fact that it uses its vitamin K antagonist properties to affect the synthesis of active factors II, VII, IX, X and protein C, which are the clotting factors, therefore interfering in the coagulation process.The warfarin dose should be titrated against measured INR when used in treating established thromboembolism.Accidental overdoses are resolved with infusion of fresh frozen plasma to correct the coagulation disorder or administration of vitamin K to rapidly correct INR, however, this method does interfere with subsequent treatment efforts if the therapy is to be reinstated.Age – elderly patients over 65, chronic heart failure, liver disease, after major surgery are amongst the most common Hemorrhage risk assessment usually results in finding one or more of the below:The International Normalized Ratio and the prothrombin time (PT) provide means to measure the function of factors II, V, VII and X in the coagulation pathway. Baglin TP et al. You’ve read {{metering-count}} of {{metering-total}} articles this month. Read our Warfarin dose in mg = exp [0.613 + (0.425 x BSA) - (0.0075 x Age) + (0.156 x African-American race) + (0.216 x Target INR) - (0.257 x Amiodarone) + (0.108 x Smoker) + (0.0784 x DVT/PE)]By using this form you agree with the storage and handling of your data by this website. Prothrombin Time: The prothrombin time (PT) is a test used to help … Close more info about INR Calculator Then you can click on the Print button to open a PDF in a separate window with the inputs and results. Baglin TP et al. British Committee for Standards in Haematology - Guidelines on oral anticoagulation (warfarin): third edition - 2005 update. In order to compute the dosage, the warfarin dosing calculator requires the BSA, ... BSA in m 2 = Weight in kg 0.425 x Height in cm 0.725 x 0.007184. A calculator for determining international normalized ratio (INR). Read our Get in touch with MDApp by using the following contact details: Try this online prothrombin time to international normalized ratio (INR) calculator to do quick calculations on INR determining. Fill in the calculator/tool with your values and/or your answer choices and press Calculate. Read our Get in touch with MDApp by using the following contact details: Initial doses may vary between 2.5 and 10mg depending on how many are and how much importance carry the bleeding risk factors present.When there aren’t any risk factors, usually patients are started on a 10mg/per day dosage for 2 days and treated as outpatients. Typical maintenance doses are 2 to 10 mg once daily. Download algorithms, calculators, and other tools to help you treat hypertension, adjust warfarin levels, and more. A calculator for determining international normalized ratio (INR). consider resumption of prior maintenance dose if factor causing decreased INR is considered [eg: missed warfarin dose(s)] if a dosage adjustment is needed, increase maintenance dose by 5-15%; INR 2.0–2.3: INR 1.8–1.9: Warfarin dose estimation calculator based on age, race, target INR, smoking status and presence of DVT or PE for professionals The user is asked to input the age, racial background, target INR, under amiodarone medication (because of strong interaction), smoking status and eventual presence of DVT and PE. Chest. Some common bleeding risk factors include:■ Abnormal liver function, cirrhosis or significant impairment usually with AST/ALT/ALP more than 3 times higher;■ Abnormal renal function (chronic dialysis or serum creatinine more than 2.3 mg/dL);The function of the factors II, V, VII and X in the coagulation pathway can be evaluated through the International Normalized Ratio and the prothrombin time (PT).There are different dosing recommendations depending on the INR value which is regularly determined for patients who undergo anticoagulation therapy with Warfarin or other substances.2. Intermountain Laboratory Data Project

Below there are several therapeutic recommendations based on the INR value.2) Baglin TP et al. This warfarin dosing calculator estimates the maintenance dose for patients with bleeding risk based on target INR and individual BSA and risk factors. In the text below the form there is more information about the dosage calculation.The warfarin dosing calculator estimates the warfarin maintenance dose based on patient data (weight and height for body surface area), target INR for control over coagulation and based on other bleeding risk factors such as (DVT or PE present or smoking).Creating an account is free and takes less than 1 minute.1.