Padua Score
Calculate the Padua Prediction Score for VTE risk in hospitalized medical patients. Evaluates 11 weighted risk factors with clinical prophylaxis guidance.
About This Calculator
What is the Padua Prediction Score?
The Padua Prediction Score is a validated clinical risk assessment tool developed by Barbar et al. (2010) to evaluate the risk of venous thromboembolism (VTE) in hospitalized medical patients. VTE encompasses deep vein thrombosis (DVT) and pulmonary embolism (PE), which are serious and potentially fatal complications in hospitalized patients. The score helps clinicians decide which patients should receive pharmacological VTE prophylaxis.
The score evaluates 11 independent risk factors, each weighted according to its association with VTE risk. Factors with a strong association — active cancer, previous VTE, reduced mobility, and known thrombophilic conditions — are assigned 3 points each. Recent trauma or surgery within one month carries 2 points. The remaining factors, including age ≥70 years, heart or respiratory failure, acute myocardial infarction or ischemic stroke, acute infection or rheumatologic disorder, obesity (BMI ≥30), and ongoing hormonal treatment, each contribute 1 point. The total score ranges from 0 to 20.
A score of less than 4 indicates low risk, where pharmacological prophylaxis is generally not recommended, though mechanical prophylaxis (compression stockings, intermittent pneumatic compression devices) may be considered based on clinical judgment. A score of 4 or higher indicates high risk, where pharmacological prophylaxis with low molecular weight heparin (LMWH), unfractionated heparin (UFH), or direct oral anticoagulants (DOACs) is recommended.
This calculator is designed for healthcare professionals evaluating hospitalized medical patients for VTE risk. It should not replace clinical judgment and should always be used alongside other risk assessment tools and individual patient evaluation. The Padua Score has been validated in multiple clinical settings worldwide and remains one of the most widely used VTE risk assessment models in internal medicine.
Frequently Asked Questions
How accurate is the Padua Prediction Score for assessing VTE risk?
The Padua Prediction Score was validated in a prospective study by Barbar et al. (2010) involving 1,180 hospitalized medical patients. A score of 4 or higher identified patients at high risk for VTE with 11.8% developing VTE within 90 days without prophylaxis, compared to 1.5% in the low-risk group (score below 4). The score has been externally validated in multiple clinical settings.
What score indicates high risk for VTE on the Padua Prediction Score?
A Padua Prediction Score of 4 points or higher indicates high risk for venous thromboembolism. Patients with a score of 4 or above should receive pharmacological VTE prophylaxis (LMWH, UFH, or DOACs) unless contraindicated. A score below 4 indicates low risk, where pharmacological prophylaxis is generally not recommended.
Can I rely on this calculator for clinical decisions?
No. This calculator is for educational and reference purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. The Padua Prediction Score should be used alongside clinical judgment and other risk assessment tools. Always consult at least one other source of knowledge and evaluate the individual patient's condition.
What is the difference between the Padua Score and the Caprini Score?
The Padua Prediction Score is designed for VTE risk assessment in hospitalized medical (non-surgical) patients, evaluating 11 risk factors. The Caprini Score is primarily used for surgical patients and includes additional factors such as type of surgery, anesthesia duration, and more detailed medical history. Both scores help guide VTE prophylaxis decisions but are validated for different patient populations.
What VTE prophylaxis options are available for high-risk patients?
For patients with a Padua Score of 4 or higher, pharmacological prophylaxis is recommended including low molecular weight heparin (LMWH), unfractionated heparin (UFH), or direct oral anticoagulants (DOACs). Mechanical prophylaxis methods such as compression stockings and intermittent pneumatic compression devices should also be considered. The choice depends on bleeding risk, renal function, and clinical circumstances.
How often should the Padua Score be reassessed?
The Padua Prediction Score should be reassessed when there is a significant change in the patient's clinical condition, such as new diagnosis of cancer, surgery, acute infection, stroke, or reduced mobility. Many institutions reassess VTE risk at admission, after 48-72 hours, and whenever the clinical status changes during the hospital stay.
Does the Padua Score apply to surgical patients?
The Padua Prediction Score was specifically developed and validated for hospitalized medical patients, not surgical patients. For surgical patients, the Caprini Risk Assessment Model is more appropriate. However, recent trauma or surgery within one month is included as a risk factor in the Padua Score. Surgical patients have different VTE risk profiles and different prophylaxis guidelines.
What are the limitations of the Padua Prediction Score?
Limitations include: it was validated primarily in internal medicine departments and may not generalize to all patient populations; it does not account for bleeding risk which must be assessed separately; inter-observer variability exists in assessing some criteria like reduced mobility; and it may underestimate risk in certain subgroups such as patients with sepsis or active cancer requiring multiple risk factor evaluation.