What is the Seattle Heart Failure Model?
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What is the Seattle Heart Failure Model?
The Seattle Heart Failure Model (SHFM) is a calculator of projected survival at baseline and after interventions for patients with heart failure. SHFM is designed for use by health care providers knowledgeable in cardiac medicine.
How accurate is the Seattle Heart Failure Model?
The accuracy of the model was excellent, with predicted versus actual 1-year survival rates of 73.4% versus 74.3% in the derivation cohort and 90.5% versus 88.5%, 86.5% versus 86.5%, 83.8% versus 83.3%, 90.9% versus 91.0%, and 89.6% versus 86.7% in the 5 validation cohorts.
What is the normal range for ankle-brachial index?
Normal cut-off values for ABI are between 0.9 and 1.4. An abnormal ankle-brachial index- below 0.9-is a powerful independent marker of cardiovascular risk.
What is the prognosis for heart failure?
A 2019 meta‐analysis estimated that the 1-, 2-, 5-, and 10‐year survival rates of all-type heart failure are 87%, 73%, 57%, and 35%, respectively, although life expectancy for a person with CHF has substantially improved over time. A person’s age at diagnosis may impact prognosis.
What is abnormal ankle-brachial index?
An ankle-brachial index number is this range indicates that you have borderline PAD . Your doctor might recommend an exercise ankle-brachial index test. PAD (less than 0.90). An ankle-brachial index number in this range is considered abnormal and indicates a diagnosis of PAD .
How do you calculate ABI value?
Health care providers calculate ABI by dividing the blood pressure in an artery of the ankle by the blood pressure in an artery of the arm. The result is the ABI. If this ratio is less than 0.9, it may mean that a person has peripheral artery disease (PAD) in the blood vessels in his or her legs.
What does ABI 1.3 mean?
INTERPRETATION OF ABI RESULTS PAD is graded as mild to moderate if the ABI is between 0.4 and 0.9, and an ABI less than 0.40 is suggestive of severe PAD [19]. An ABI value greater than 1.3 is also considered abnormal, suggestive of non-compressible vessels.
