The revised cardiac risk index calculator takes history of cerebrovascular disease?, history of congestive heart failure?, history of ischemic heart disease?, pre-surgery creatinine level >2 mg/dl (176.8 µmol/l)?, pre-surgery treatment with insulin? and high risk noncardiac surgery? and returns 30-day risk of death, mi, or cardiac arrest, total rcri points and class. It is built for quick answers, for checking somebody else’s arithmetic, and for the moments when a formula book is not within reach.
What Is the Revised Cardiac Risk Index Calculator?
The revised cardiac risk index calculator gives you an estimate of 30-day risk of death, mi, or cardiac arrest, total rcri points and class based on history of cerebrovascular disease?, history of congestive heart failure?, history of ischemic heart disease?, pre-surgery creatinine level >2 mg/dl (176.8 µmol/l)?, pre-surgery treatment with insulin? and high risk noncardiac surgery?.
It is a quick reference figure rather than a diagnosis, and it is most useful for tracking how a number moves over time rather than for interpreting a single reading.
How the Revised Cardiac Risk Index Estimate Is Worked Out
The calculation follows published reference relationships, so it is a reasonable approximation when the inputs are accurate. It assumes an average adult and does not account for individual variation.
If you are comparing two people, or the same person over a period of weeks, keep the method and the inputs identical. A change in the method can easily look like a change in the person.
What This Calculator Does Not Do
It does not diagnose anything, and it does not replace advice from a clinician. If a figure comes out at an extreme, or if it differs sharply from what you expect, that is a reason to speak to a professional rather than to adjust the inputs.
Nothing you type here is stored or sent anywhere. The whole calculation happens in your browser.
A Worked Example
Working through an example, with history of cerebrovascular disease? set to 0.000000000000000, history of congestive heart failure? set to 0.000000000000000, history of ischemic heart disease? set to 0.000000000000000, the calculator returns total rcri points of -, and 30-day risk of death, mi, or cardiac arrest of 15, and class of 4. Substitute your own figures and the same steps produce the same kind of answer.
Frequently Asked Questions
What do I need to work out 30-day risk of death, mi, or cardiac arrest?
Enter history of cerebrovascular disease?, history of congestive heart failure?, history of ischemic heart disease?, pre-surgery creatinine level >2 mg/dl (176.8 µmol/l)?, pre-surgery treatment with insulin? and high risk noncardiac surgery?. The calculator then works through the relationship and reports 30-day risk of death, mi, or cardiac arrest, total rcri points and class.
What does the revised cardiac risk index actually calculate?
It takes history of cerebrovascular disease?, history of congestive heart failure?, history of ischemic heart disease?, pre-surgery creatinine level >2 mg/dl (176.8 µmol/l)?, pre-surgery treatment with insulin? and high risk noncardiac surgery? and converts them into 30-day risk of death, mi, or cardiac arrest, total rcri points and class using the standard relationship for this problem. Each step is applied in turn, so every output is traceable back to the numbers you typed in.
How should I enter history of cerebrovascular disease??
Use the value you actually have, in the unit shown next to the field. Enter every value in the same unit system. The calculator assumes the figures you supply are consistent, so it cannot correct a mistake that happens before the calculation starts.
Does anything you type get stored?
No. The whole calculation runs inside your browser, and nothing you enter is uploaded, logged or sent anywhere.
Is the answer exact?
It is as exact as the formula and the inputs allow. The method itself is the standard one for this problem, so the only sources of error are the figures you enter and the precision you ask for.