Table 3.

Comparison of Treatment Groups by Pressure Passivity Index (PPI)

Measure	Control (N=12)	Conservative (N=6)	Indomethacin (N=12)	Ligation (N=10)
Baseline rSO2 (%)	74 ± 3	68 ± 4	68 ± 3	63 ± 4
Baseline PPI (%)	5 ± 2	9 ± 2	13 ± 5	13 ± 6
2 h PPI (%)	n/a	11 ± 3	8 ± 4	29 ± 2
Δ 2 h PPI (%)*		2 ± 3	−5 ± 4	16 ± 3
6 h PPI (%)	n/a	15 ± 3	12 ± 3	20 ± 2
Δ 6 h PPI (%)		6 ± 3	−0.8 ± 3	7 ± 2
12 h PPI (%)	n/a	14 ± 2	12 ± 4	17 ± 3
Δ 12 h PPI (%)		5 ± 2	0.9 ± 3	4 ± 2
24 h PPI (%)	n/a	15 ± 2	11 ± 3	17 ± 2
Δ 24 h PPI (%)		6 ± 2	-2 ± 3	4 ± 1

Plus-minus values are means ± standard error of the mean.

PPI values are averages over the time interval.

^*Difference between conservative management and ligation groups (p=0.04), and difference between indomethacin and ligation groups (p=0.0007).