Description

Liu et al reported the QQ-LAE score for evaluating a patient having cardiac resynchronization therapy. This can help to identify a super-responder. The authors are from Peking Union Medical College and Capital Medical University in Beijing.


Patient selection: cardiac resynchronization therapy

 

Super-responder: dramatic improvement of left ventricular ejection fraction with excellent long-term outcome (defined as absolute increase of LVEF >= 15% at 6-month follow-up)

 

Parameters:

(1) prior no fragmented QRS (Q)

(2) QRS duration (Q)

(3) left bundle branch block (L)

(4) left atrial diameter in mm (A)

(5) left ventricular end-diastolic diameter (LVEDd) in mm (E)

 

Parameter

Finding

Points

prior fragmented QRS

no

1

 

yes

0

QRS duration

< 170 ms

0

 

>= 170 ms

1

left bundle branch block

no

0

 

yes

1

left atrial diameter

< 45 mm

1

 

>= 45 mm

0

LVEDd in mm

< 75 mm

1

 

> 75 mm

0

 

total score =

= SUM(points for all of the parameters)

 

Interpretation:

• minimum score: 0

• maximum score: 5

 

Total Score

Percent Super Responder

0 to 3

15%

4

40%

5

64%

 


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