BMC Pediatrics

Table 2 Preductal capillary blood gas data at admission and during the first 24 h after admission^a

From: Survival prediction of high-risk outborn neonates with congenital diaphragmatic hernia from capillary blood gases

Characteristic	Hospitalization outcome				P value^b
	Survival (n = 25)^d		Death (n = 19)
	N	Mean ± SD	N	Mean ± SD
Admission blood gas
PcO₂, mm Hg	25	54.9 ± 20.9	19	45.5 ± 18.6	0.13
PcO₂/FIO₂, mm Hg	25	72.2 ± 37.3	19	50.3 ± 30.2	0.04
PcCO₂, mm Hg	25	70.1 ± 25.2	19	91.3 ± 31.1	0.02
pH	24	7.15 ± 0.19	17	7.01 ± 0.19	0.03
Base deficit, mEq/L	24	−5.20 ± 6.92	17	−9.92 ± 8.57	0.058
Postadmission blood gas (≤24 h)^c
Highest PcO₂, mm Hg
Alive at 24 h	24	87.0 ± 36.7	12	70.6 ± 21.1	0.16
Death at ≤24 h	---	---	7	65.7 ± 19.6	---
Highest PcO₂/FIO₂, mm Hg
Alive at 24 h	24	140.5 ± 65.2	12	75.2 ± 23.8	0.002
Death at ≤24 h	---	---	7	67.8 ± 19.7	---
Highest PcCO₂, mm Hg
Alive at 24 h	24	73.3 ± 25.0	12	100.1 ± 34.6	0.01
Death at ≤24 h	---	---	6	117.7 ± 26.7	---
Lowest pH
Alive at 24 h	23	7.14 ± 0.19	10	7.01 ± 0.20	0.09
Death at ≤24 h	---	---	6	6.88 ± 0.09	---
Highest base deficit, mEq/L					0.131
Alive at 24 h	23	−6.35 ± 6.71	10	−10.42 ± 7.43	---
Death at ≤ 24 h	---	---	5	−17.92 ± 3.66	---

^aAll blood gas data presented in this table were obtained before surgical intervention. ^b P values are from the 2-sample t-test comparing the given blood gas measurement between patients who survived hospitalization and patients who did not. ^cComparison of the gas exchange over the first 24 h are restricted to patients who survived at least 24 h. ^dIn the survivor group, one neonate had admission data, but missing information for postadmission blood gases. For this reason the sample sizes for the survival group are one less in the postadmission analysis than the admission analysis. Abbreviations: FIO₂, fraction of inspired oxygen; PcCO₂, partial pressure of carbon dioxide in the capillary blood; PcO₂, partial pressure of oxygen in the capillary blood

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ISSN: 1471-2431

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