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Table 4 Intra- and interobserver reproducibilities for left ventricular volumes and ejection fraction by single- and four-beat three-dimensional echocardiography.

From: Three-dimensional echocardiography using single-heartbeat modality decreases variability in measuring left ventricular volumes and function in comparison to four-beat technique in atrial fibrillation

 

EDV (ml)

ESV (ml)

EF (%)

Group A

Intraobserver variability (%)

   

Four-beat full volume

4.4

5.1

3.4

Single-beat full volume

3.9

4.6

4.1

Group A

Interobserver variability (%)

   

Four-beat full volume

7.3

8.5

3.9

Single-beat full volume

6.4

6.5

4.5

Group B

Intraobserver variability (%)

   

Four-beat full volume

9*

11.4

8.3**

Single-beat full volume

4.5

2.9

4.8

Group B

Interobserver variability (%)

   

Four-beat full volume

10.4*

15.2*

17.9**

Single-beat full volume

7.6

7.2

5.6

  1. EDV: end-diastolic volume, ESV: end-systolic volume and EF: ejection fraction, *p < 0.05 and **p < 0.001.