Key Echocardiography findings in atrial fibrillation patient

Key Echocardiography Findings in atrial fibrillation patient

Echo does not replace ECG for confirmation of AF, but several findings together can make the diagnosis highly likely.

Key echocardiographic indicators:

1. Loss of atrial contraction

There is no A-wave seen on mitral inflow Doppler.

There is no A’ wave on TDI of the mitral annulus.

LV filling is dominated by the E-wave only, and sometimes an L-wave appears in restrictive filling.

2. Irregular ventricular response

Beat-to-beat variation in mitral inflow Doppler E-wave height and deceleration time.

Irregular LVOT stroke volume from one beat to another.

Variable cycle length with no pattern, reflecting irregular R-R intervals mechanically.

3. Left atrial changes suggesting chronic AF

Marked LA enlargement.

Reduced LA emptying function.

Low atrial strain values.

Presence of spontaneous echo contrast or thrombus especially in the appendage on TEE.

4. TEE features strongly supportive

Low appendage emptying velocity often below 20–30 cm/s.

Smoke appearance indicating blood stasis.

Loss of contractile motion of the appendage.

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Difference between new-onset and chronic AF by echo

New and paroxysmal AF often show normal or only mildly enlarged LA size, preserved function, and good appendage velocities.

Chronic AF is more likely when the LA is clearly enlarged, the LAA velocity is very low, there is spontaneous echo contrast, and mitral annular dilatation with possible MR.

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𝘼𝙣𝙩𝙞𝙘𝙤𝙖𝙜𝙪𝙡𝙖𝙩𝙞𝙤𝙣 𝘼𝙛𝙩𝙚𝙧 𝙎𝙩𝙧𝙤𝙠𝙚

𝘼𝙣𝙩𝙞𝙘𝙤𝙖𝙜𝙪𝙡𝙖𝙩𝙞𝙤𝙣 𝘼𝙛𝙩𝙚𝙧 𝙎𝙩𝙧𝙤𝙠𝙚 in Patient with AF and acute IS/TIA European Heart Association Guideline recommends: • 1 days after TIA • 3 days after mild stroke • 6 days after moderate stroke • 12 days after severe stroke Early anticoagulation can decrease a risk of recurrent stroke and embolic events but may increase a risk of secondary hemorrhagic transformation of brain infarcts. The 1-3-6-12-day rule is a known consensus with graded increase in delay of anticoagulation between 1 and 12 days after onset of ischemic stroke or transient ischemic attack(TIA), according to neurological severity based on European expert opinions. However, this rule might be somewhat later than currently used in a real-world practical setting.

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