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Table 3 Comparative incidence of the assessed categories of the A-F scheme. Analysis of compliance (Anaesthetist compared with Cardiologist)

From: Reliability of focused cardiac ultrasound by novice sonographer in preoperative anaesthetic assessment: an observational study

A-F scheme category

Concordant answers

Non-concordant answers

Kappa

P(McNemar)

Sensitivity

(Anaesthetist)

[95 % CI]

Specificity

(Anaesthetist)

True positive

True negative

False negative

False positive

Proximal aorta > 4 cm

7 (4.5 %)

146 (94.2 %)

2 (1.3 %)

0 (0 %)

0.8683

0.1573

77.8 %

[45.3–93.7 %]

100 %

[97.4–100 %]

LV global contractility impaired

4 (2.6 %)

143 (92.3 %)

1 (0.65 %)

7 (4.5 %)

0.7815

0.0339

80 %

[37.6–96.4 %]

95.3 %

[90.7–97.7 %]

LV regional wall motion abnormalities

6 (3.9 %)

140 (90.3 %)

0 (0 %)

9 (5.8 %)

0.5463

0.0027

100 %

[61.0–100 %]

94 %

[88.9–96.8 %]

LVEDD > 6 cm

1 (0.65 %)

152 (98.1 %)

0 (0 %)

2 (1.3 %)

0.4951

0.1573

100 %

[20.7–100 %]

98.7 %

[95.4–99.6 %]

RVEDD > 4,2 cm

4 (2.6 %)

148 (95.5 %)

1 (0.65 %)

2 (1.3 %)

0.7173

0.5637

80 %

[37.6–96.4 %]

98.7 %

[95.3 – 99.6 %]

LA diameter >4,5 cm

12 (7.7 %)

138 (89.0 %)

2 (1.3 %)

3 (1.9 %)

0.8098

0.6547

85.7 %

[60.0–96.0 %]

97.9 %

[93.9 –99.4 %]

RA major diameter

6 (3.9 %)

146 (94.2 %

3 (1.9 %)

0 (0 %)

0.7903

0.0833

66.7 %

[35.4–91.0 %]

100 %

[97.4–100 %]

RA minor diameter

9 (5.8 %)

141 (91.0 %)

4 (2.6 %)

1 (0.65 %)

0.7655

0.1797

69,2 %

[38,9–89,6 %]

99,3 %

[95,6 –100 %]

Pericardial fluid

4 (2.6 %)

150 (96.8 %)

1 (0.65 %)

0 (0 %)

0.8856

0.3157

80,0 %

[29,9–98,9 %]

100

[96,9–100 %]

Pleural fluid

2 (1.3 %)

153 (98.7 %)

0 (0 %)

0 (0 %)

1.000

NA

100 %

[29,9–100 %]

100 %

[96,9–100 %]

Valvular lesions

39 (25.2 %)

109 (70.3 %)

2 (1.3 %)

5 (3.2 %)

0.8866

0.2568

88,6 %

[74,6–95,7 %]

98,2 %

[93,0–99,7 %]

  1. LV- left ventricle, LA-left atrium, RV-right ventricle, RA-right atrium, EDD- end diastolic diameter