ECG Prognostic Score of Soofi et al

Description

Soofi et al reported a score based on the Diagonal Line Rule (DLR) of Sibbitt. This can help to identify a patient at increased risk for a cardiovascular death. The authors are from the Ohio State University, Stanford University and Veterans Affairs Palo Alto Health Care System.

Parameters:

(1) age in years

(2) gender

(3) high lateral (Q wave duration >= 40 msec or TWI <= -0.1 mV in lead I; upright T-waves > 0.1 mV in aVR)

(4) inferior (Q wave duration >= 40 ms or TWI <= -0.1 mV in lead II or avF)

(5) lateral (Q wave duration >= 40 ms or TWI <= -0.1 mV in leads V4, V5 or V6)

(6) ST depression (depression <= -0.05 mV with flat or down slope in V5)

(7) anterior (Q wave duration >= 40 ms or TWI <= -0.1 mV in leads V2 or V3)

Parameter	Finding	Points
age	<= 40 years	3
	41 to 50 years	6
	51 to 60 years	9
	61 to 70 years	12
	>= 71 years	15
gender	female	0
	male	3
high lateral	negative lead I and AVR	0
	positive	2
inferior	negative lead II and aVF	0
	positive	2
lateral	negative V4, V5 and V6	0
	positive	3
ST depression	none in V5	0
	positive	1
anterior	negative V2 and V3	0
	positive	1

where:

• TWI = T-wave inversion

total score =

= SUM(points for all of the parameters)

Interpretation:

• minimum score: 3

• maximum score: 27

annual cardiovascular mortality in percent =

= (0.0137 * ((score)^2)) - (0.0499 * (score)) - 0.2007

Performance:

• The area under the ROC curve is 0.78

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