🫀 Stroke Volume (LVOT Doppler)
UseWhen to use: echo hemodynamics / serial SV tracking.
StrataDiameter error is squared — measure carefully; consider SVI.
LimitsWhen not to use: poor LVOT window / irregular rhythm without averagin… · Pitfall: diameter in mm not cm. · Not a substitute for full echo report.
SourceStandard LVOT Doppler stroke volume
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
Paste the link in Slack, Teams, X, or LinkedIn — the preview image comes from this page’s Open Graph card.
Methodology · worked example, guidelines & full notes
CSA×VTI.
When to use
When to use: echo hemodynamics / serial SV tracking.
How it works
SV = π(D/2)² × VTI; or SV = CO×1000/HR.
Key points
- CSA×VTI.
- Or CO/HR.
- Next: SVI / CO.
References
- Standard LVOT Doppler stroke volume
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Mode | LVOT diameter + VTI |
|---|---|
| LVOT diameter | 2.0 cm |
| LVOT VTI | 18 cm |
| Cardiac output (if CO mode) | 5.0 L/min |
| Heart rate | 70 /min |
→SV56.5mL
- LVOT CSA：3.14 cm²
- Cue：35–100 mL — common adult SV band (size-dependent)
| Mode | From CO and HR |
|---|---|
| LVOT diameter | 2.0 cm |
| LVOT VTI | 18 cm |
| Cardiac output (if CO mode) | 5.0 L/min |
| Heart rate | 70 /min |
→SV71.4mL
- From：CO×1000/HR
- Cue：35–100 mL — common adult SV band (size-dependent)
Verification & sources · governance
FAQ
Frequently asked questions
- Does Stroke Volume (LVOT Doppler) 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.
- How is Stroke Volume (LVOT Doppler) calculated in practice? Can you show a worked example?
- Inputs: Mode LVOT diameter + VTI, LVOT diameter 2.0 cm, LVOT VTI 18 cm, Cardiac output (if CO mode) 5.0 L/min, Heart rate 70 /min → Result: SV 56.5 mL（LVOT CSA: 3.14 cm², Cue: 35–100 mL — common adult SV band (size-dependent)） Inputs: Mode From CO and HR, LVOT diameter 2.0 cm, LVOT VTI 18 cm, Cardiac output (if CO mode) 5.0 L/min, Heart rate 70 /min → Result: SV 71.4 mL（From: CO×1000/HR, Cue: 35–100 mL — common adult SV band (size-dependent)）