Obstetric hemorrhage and shock management: using the low technology Non-pneumatic Anti-Shock Garment in Nigerian and Egyptian tertiary care facilities

Table 3 Outcomes between standard hemorrhage and shock management (pre-intervention) and standard management plus NASG (intervention) (N = 1442)

Outcome	Pre-intervention (N = 607)	NASG (N = 835)	Relative Risk (95%CI)	Pvalue	NNTb
Measured vaginal blood loss in drape:
Mean mL (SD)*	443.5 (346.1)	240.0 (199.4)		--
Median mL (IQR)	400 (250-500)	200 (150-250)		<0.0001
Emergency hysterectomy⁺	20 (8.9)	14 (4.0)	0.44(0.23-0.86)	--	20 (11-138)
Morbidity^‡	21 (3.7)	6 (0.7)	0.20 (0.08-0.50)	--	34 (22-78)
Mortality	38 (6.3)	29 (3.5)	0.56 (0.35-0.89)	--	36 (20-202)

NASG = Non-pneumatic Anti-Shock Garment. Data are n (%) or mean (SD). The denominator is the entire population, unless otherwise noted.
* For cases in which the calibrated blood collection drape was used and there were data for blood loss. Wilcoxon rank-sum test used to compare distributions by study phase. Data are for 1005 cases.
⁺Data on emergency hysterectomy are only for women with primary or secondary diagnosis of uterine atony (n = 578).
^‡Includes renal failure, acute respiratory distress syndrome, heart failure, cerebral impairment (seizures, un-consciousness, motor/cognitive loss) lasting more than 24 hours after resuscitation from shock. Denominator is the number of women who survived (n = 1375).

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