❤️ Mitral Valve Area (PHT)
UseWhen to use: rheumatic MS severity adjunct when PHT is measurable.
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StrataTeaching bands often use <1.0 severe, 1.0–1.5 moderate — confirm with planimetry when possible.
LimitsWhen not to use: soon after PMBV / significant AR / non-compliant LV. · Pitfall: trusting PHT alone. · Not a PMBV sole decision.
SourceHatle pressure half-time MVA teaching relation
Runs locally in your browser (no PHI uploaded). For licensed clinicians — not a substitute for clinical judgement.
Stored on this device for revisit reminders
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
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Methodology · worked example, guidelines & full notes
Clinical takeaway
220/PHT.
When to use
When to use: rheumatic MS severity adjunct when PHT is measurable.
How it works
MVA (cm²) ≈ 220 / PHT (ms).
Key points
- 220/PHT.
- Hatle empirical.
- Next: planimetry / mean gradient.
References
- Hatle pressure half-time MVA teaching relation
Verification & sources · governance
FAQ
Frequently asked questions
- Does Mitral Valve Area (PHT) upload patient data? Where is it calculated?
- Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.