MDCalc Wars: sPESI vs Bova Score — PE Risk Stratification Made Practical

Written by Eric Steinberg DO, MEHP
REBEL EM
Medical Category: Hematology and Oncology, Thoracic and Respiratory
Bova Score, Hestia Criteria, MDCalc Wars, Normotensive PE, PE Risk Stratification, Pulmonary Embolism, Pulmonary Embolism Disposition, sPESI, Submassive PE

May 25, 2026

🗝️ Key Points

🫀 “Stable” PE does not always mean low risk. Normotensive patients can still deteriorate, especially with RV strain, tachycardia, hypoxemia, or positive biomarkers.
🏠 sPESI is best for identifying potential discharge candidates. A score of 0 supports low-risk classification, but should be paired with Hestia criteria, bleeding risk, social factors, oxygen needs, and follow-up access.
⚠️ Bova is best for finding the deceptively stable PE patient. It helps identify normotensive patients at risk for early PE-related complications who may need closer monitoring or escalation planning.
🧠 Use the tools for different bedside questions. sPESI asks, “Could this patient go home?” Bova asks, “Who might crash despite a normal blood pressure?”
🚫 Do not let a calculator override clinical judgment. Severe symptoms, poor follow-up, unreliable exam, high bleeding risk, or clinician concern should push you toward observation or admission.

🤕 Case

A 58-year-old woman with newly diagnosed PE has normal blood pressure, mild tachycardia, no oxygen requirement, and mild RV strain on CT. She looks well, but you’re not sure whether she’s truly low risk enough for outpatient management or someone who could deteriorate over the next 24-48 hours. So how do you separate the safe discharge from the deceptively stable patient?

🔗 Scoring Tools

- ➡️ Simplified PESI (Pulmonary Embolism Severity Index)
- ➡️ Bova Score for Pulmonary Embolism Complications

🎯 Quick Hits

💬 Case Resolution

Using sPESI, this patient would not qualify as low risk, making outpatient management less appropriate. Applying Bova, the combination of normotension with evidence of RV strain places her in a group warranting closer monitoring rather than routine floor disposition. She is admitted for ongoing observation, anticoagulation, and reassessment in case her “stable” PE declares itself otherwise.

🚨 Clinical Bottom Line

sPESI: Best for identifying low-risk PE patients who may be safe for outpatient management when paired with clinical judgment and Hestia Criteria.
Bova: Best for identifying normotensive PE patients at risk of early deterioration who may need closer monitoring, ICU-level care, PERT team involvement, and/or escalation planning.

Post Peer Reviewed By: Marco Propersi, DO (Twitter/X: @Marco_Propersi), and Mark Ramzy, DO (X: @MRamzyDO)

❓ FAQ

What is the main difference between sPESI and Bova?
sPESI helps identify PE patients at low risk for 30-day mortality who may be candidates for outpatient management.
Bova helps identify normotensive PE patients at risk for early deterioration.
When should I use sPESI?
Use sPESI after PE is diagnosed when you are asking:
“Could this patient potentially go home?”
A score of 0 supports low-risk classification, but it should not be used alone.
When should I use Bova?
Use Bova in a normotensive PE patient when you are asking:
“Who is at risk of crashing despite looking stable?”
It is most useful when there is tachycardia, RV dysfunction, elevated troponin, or borderline physiology.
Can a low sPESI patient still be unsafe for discharge?
Yes. A low sPESI does not override severe symptoms, oxygen needs, high bleeding risk, renal dysfunction, poor follow-up, social barriers, or clinician concern.
Does a high Bova score mean the patient needs thrombolytics?
No. A higher Bova score should prompt closer monitoring, reassessment, escalation planning, and possibly PERT involvement. It does not automatically mean systemic thrombolysis.

🧭 Prep Sheets

Simplified PESI (Pulmonary Embolism Severity Index)

Bova Score for Pulmonary Embolism Complications

👤 Author

Eric Steinberg

DO, MEHP

Content Director, MDCalc, Residency Director, Emergency Medicine St. Joseph's University Medical Center, Paterson, NJ

Meet The Team

🔎 Your Deep-Dive Starts Here

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Cite this article as: Eric Steinberg DO, MEHP, "MDCalc Wars: sPESI vs Bova Score — PE Risk Stratification Made Practical", REBEL EM blog, May 25, 2026. Available at: https://rebelem.com/mdcalc-wars-spesi-vs-bova-score-pe-risk-stratification-made-practical/.