The PE-CH risk score, or Pulmonary Embolism Severity Index (PESI) and simplified PESI (sPESI), is a clinical calculator used in the management of patients with pulmonary embolism. This scoring system is used to stratify patients into different risk categories based on their clinical characteristics and comorbidities. 

The PE-CH risk score applies to patients who have been diagnosed with acute pulmonary embolism. The clinical utility of this calculator is to predict the 30-day mortality risk in these patients, which can guide clinicians in determining the appropriate level of care, such as outpatient treatment, hospitalization, or intensive care unit admission.

There are no specific exclusion criteria for the use of the PE-CH risk score. However, it should be noted that this score is less accurate in predicting mortality in patients with cancer, and it does not consider the size or location of the embolism, which can also influence patient outcomes.

PE-CH risk score

# Description:
The PE-CH risk score, or Pulmonary Embolism Severity Index (PESI) and simplified PESI (sPESI), is a clinical calculator used in the management of patients with pulmonary embolism. This scoring system is used to stratify patients into different risk categories based on their clinical characteristics and comorbidities. 

The PE-CH risk score applies to patients who have been diagnosed with acute pulmonary embolism. The clinical utility of this calculator is to predict the 30-day mortality risk in these patients, which can guide clinicians in determining the appropriate level of care, such as outpatient treatment, hospitalization, or intensive care unit admission.

There are no specific exclusion criteria for the use of the PE-CH risk score. However, it should be noted that this score is less accurate in predicting mortality in patients with cancer, and it does not consider the size or location of the embolism, which can also influence patient outcomes.
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# Inputs:
A. Age > 65 years (+1)
B. Peripheral vascular disease (+1)
C. Prior cerebrovascular accident (+5)
D. Prior myocardial infarction (+1)
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# Scoring:
- If score == 0, then Risk of intracranial hemorrhage following systemic thrombolysis is 1.2%
- If score == 1, then Risk of intracranial hemorrhage following systemic thrombolysis is 1.9%
- If score == 2, then Risk of intracranial hemorrhage following systemic thrombolysis is 2.7%
- If score == 3, then Risk of intracranial hemorrhage following systemic thrombolysis is 2.7%-17.4%
- If score >= 5, then Risk of intracranial hemorrhage following systemic thrombolysis is 17.4%)