ABC-AF Bleeding Score ABC-AF Stroke Score ABCD2 Score ADD-RS Aortic Valve Calcium Score APPLE Score ASCVD (Pooled Cohort)AVA (Continuity Equation)BAG-AHF Score Biplane Simpson EF Blood Pressure Percentiles Brugada Criteria (VT vs SVT)Cardiac Output Index CHA2DS2-VASc CHADS2 Cornell Voltage Criteria CRUSADE Bleeding Score DAPT Score DASI Duke Treadmill Score E/A Ratio EDACS Score EHMRG EHRA Score Embolic Risk Score EROA (PISA Method)FFR (Fractional Flow Reserve)Fick Cardiac Output Framingham 10-Year Risk Friedewald LDL Equation Gorlin Equation GRACE Score Gupta MICA (NSQIP)GWTG-HF Score H2FPEF Score Hakki Formula HAS-BLED HEART Pathway HEART Score HEMORR2HAGES hs-Troponin 0h/1h ESC Algorithm iFR INTERCHEST Score Killip Classification Lee's RCRI LV Mass Index LV Stroke Work Index MAGGIC Risk Score MAP Calculator Martin/Hopkins LDL Modified Duke Criteria Modified Sgarbossa Criteria MVA (Pressure Half-Time)Non-HDL Cholesterol NT-proBNP Age-Adjusted Thresholds ORBIT Score Ottawa Heart Failure Risk PREVENT Equations Pulse Pressure PVR Calculator PVR Index QRISK3 QTc (Bazett)QTc (Fridericia)REVEAL 2.0 Score REVEAL Lite 2 Reynolds Risk Score ROSI RVSP Calculator Schwartz Score (LQTS)SCORE2 Seattle Heart Failure Model (SHFM)Sgarbossa Criteria Shock Index Sokolow-Lyon Voltage Stroke Volume Index SVR Calculator SYNTAX Score SYNTAX Score II TAPSE Teichholz Formula TIMI (STEMI)TIMI (UA/NSTEMI)Troponin Delta Calculator Valvular Gradients Vancouver Chest Pain Rule Vereckei Algorithm WATCHDM Score Wilkins Score Wood Units Calculator

Recent Journal Updates

DiabetologiaJun 6, 2026

Time-restricted eating versus dietetic guidance on glycaemic outcomes in adults at risk of type 2 diabetes: a non-inferiority randomised clinical trial

Clinical Context

We think this has broad domain relevance to Biplane Simpson EF.

DiabetologiaJun 6, 2026

Plasma small RNA profiling reveals a three-miRNA signature associated with early beta cell dysfunction across glucose tolerance stages

Clinical Context

We think this has broad domain relevance to Biplane Simpson EF.

Intensive Care MedicineJun 2, 2026

Nutrition support in the ICU: current evidence and evolving standards

Clinical Context

We think this has broad domain relevance to Biplane Simpson EF.

Biplane Simpson EF

Biplane Simpson EF: LV ejection fraction from apical 2- and 4-chamber disk summation method.

Apical 2-Chamber View

LV End-Diastolic Volume (mL)

LV End-Systolic Volume (mL)

Apical 4-Chamber View

LV End-Diastolic Volume (mL)

LV End-Systolic Volume (mL)

Formula

EF = (avg EDV − avg ESV) / avg EDV × 100%

Guidelines & Evidence

Verified

Last Review: 2026

When to Use

Primary LV systolic function assessment on transthoracic echo

HF diagnosis and severity stratification

Post-MI LV function assessment

Cardiotoxicity monitoring (chemotherapy, HER2 inhibitors)

Serial monitoring in LVAD candidates

More accurate than M-mode (Teichholz) in most patients

Key Advantages

Less dependent on geometric assumptions vs. M-mode

Validated against cardiac MRI gold standard

Incorporates regional function variations

Recommended by ESC/AHA guidelines as primary measurement

Reproducible across operators with good image quality

Last Comprehensive Review: 2026

Guidelines & Evidence

Verified

Last Review: 2026

When to Use

Primary LV systolic function assessment on transthoracic echo

HF diagnosis and severity stratification

Post-MI LV function assessment

Cardiotoxicity monitoring (chemotherapy, HER2 inhibitors)

Serial monitoring in LVAD candidates

More accurate than M-mode (Teichholz) in most patients

Key Advantages

Less dependent on geometric assumptions vs. M-mode

Validated against cardiac MRI gold standard

Incorporates regional function variations

Recommended by ESC/AHA guidelines as primary measurement

Reproducible across operators with good image quality

Last Comprehensive Review: 2026

Related Cardiovascular Tools

Framingham 10-Year Risk

Cardiovascular Calculators Critical Care Calculators Emergency Medicine Calculators

Have feedback about this calculator?Let us know.

Recent Journal Updates

DiabetologiaJun 6, 2026

Time-restricted eating versus dietetic guidance on glycaemic outcomes in adults at risk of type 2 diabetes: a non-inferiority randomised clinical trial

Clinical Context

We think this has broad domain relevance to Biplane Simpson EF.

DiabetologiaJun 6, 2026

Plasma small RNA profiling reveals a three-miRNA signature associated with early beta cell dysfunction across glucose tolerance stages

Clinical Context

We think this has broad domain relevance to Biplane Simpson EF.

Intensive Care MedicineJun 2, 2026

Nutrition support in the ICU: current evidence and evolving standards

Clinical Context

We think this has broad domain relevance to Biplane Simpson EF.

Biplane Simpson EF

Biplane Simpson EF: LV ejection fraction from apical 2- and 4-chamber disk summation method.

Apical 2-Chamber View

LV End-Diastolic Volume (mL)

LV End-Systolic Volume (mL)

Apical 4-Chamber View

LV End-Diastolic Volume (mL)

LV End-Systolic Volume (mL)

Formula

EF = (avg EDV − avg ESV) / avg EDV × 100%

Guidelines & Evidence

Verified

Last Review: 2026

When to Use

Primary LV systolic function assessment on transthoracic echo

HF diagnosis and severity stratification

Post-MI LV function assessment

Cardiotoxicity monitoring (chemotherapy, HER2 inhibitors)

Serial monitoring in LVAD candidates

More accurate than M-mode (Teichholz) in most patients

Key Advantages

Less dependent on geometric assumptions vs. M-mode

Validated against cardiac MRI gold standard

Incorporates regional function variations

Recommended by ESC/AHA guidelines as primary measurement

Reproducible across operators with good image quality

Last Comprehensive Review: 2026

Guidelines & Evidence

Verified

Last Review: 2026

When to Use

Primary LV systolic function assessment on transthoracic echo

HF diagnosis and severity stratification

Post-MI LV function assessment

Cardiotoxicity monitoring (chemotherapy, HER2 inhibitors)

Serial monitoring in LVAD candidates

More accurate than M-mode (Teichholz) in most patients

Key Advantages

Less dependent on geometric assumptions vs. M-mode

Validated against cardiac MRI gold standard

Incorporates regional function variations

Recommended by ESC/AHA guidelines as primary measurement

Reproducible across operators with good image quality

Last Comprehensive Review: 2026

Related Cardiovascular Tools

Framingham 10-Year Risk

Cardiovascular Calculators Critical Care Calculators Emergency Medicine Calculators

Have feedback about this calculator?Let us know.