What are the limitations of the spesi score?

While the spesi score is highly validated, it should not replace clinical judgment. OpiCalc provides the latest evidence-based limitations for the spesi score to ensure safe bedside use and optimal diagnostic accuracy.

How does the spesi score compare to other hematology scores?

The spesi score is a gold-standard diagnostic tool. OpiCalc provides side-by-side clinical guidance to help clinicians choose the most specific evidence-based tool for their patient's presentation.

Is the spesi score free to use?

Yes. OpiCalc provides the spesi score completely ad-free and optimized for mobile bedside use, ensuring you can calculate medical risk swiftly and without distraction.

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sPESI (Simplified PESI)

PE Stratification: The sPESI is used after PE is confirmed. A score of 0 identifies patients at very low risk (1% mortality) who may be eligible for outpatient therapy.

Prognostic Criteria (1 pt each)

PE Severity Index Score

0

Risk Assessment

Low Risk

Clinical Insight

Mortality risk ~1.0%. Consider outpatient treatment if hemodynamically stable.

30-Day Prognostic Tool

Guidelines & Evidence

Clinical Details

Section 1

When to Use

Prognostic stratification of patients with acute Pulmonary Embolism (PE).

Identifying "low risk" patients suitable for early discharge or outpatient management.

Predicting 30-day all-cause mortality.

Exclusions

Do not use as a diagnostic tool for PE. Use only AFTER PE has been confirmed by imaging (CTPA or V/Q scan).

Section 2

Formula & Logic

Predictors (1 point each)

Age > 80 years.

History of Cancer (Active or chronic).

Chronic Cardiopulmonary Disease (HF or COPD).

Pulse Rate ≥ 110 bpm.

Systolic Blood Pressure < 100 mmHg.

Arterial Oxygen Saturation (SpO₂) < 90%.

Interpretation

Score	Risk Class	30-Day Mortality
0	Low Risk	1.0% (Consider Outpatient Rx)
≥ 1	High Risk	10.9% (Inpatient Admission)

Section 3

Pearls/Pitfalls

The Outpatient Pivot

The primary value of the sPESI is its extremely high negative predictive value. A score of 0 allows clinicians to safely consider outpatient therapy in hemodynamically stable patients with good home support, significantly reducing hospital costs and resource usage.

sPESI vs. PESI

The original PESI score (11 items) is more granular but the sPESI (6 items) is equally performant for identifying low-risk candidates and is far more practical for bedside emergency triage.

Section 4

Evidence Appraisal

Primary Score

Simplification of the pulmonary embolism severity index for prognostication in patients with acute symptomatic pulmonary embolism.

Jiménez D et al. • Archives of Internal Medicine. 2010;170(15):1383-9.

View Source

Section 5

Literature

History

Derived from the RIETE registry (Registry of Patients with Venous Thromboembolism) and validated worldwide as the gold standard for PE stratification.

Last Comprehensive Review: 2026

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