Table 1 Characteristics of studies included in the systematic review and meta-analysis of plasma volume expansion across healthy pregnancy
Author, year | Country | Sample Size | Gravidity | Age (y) | Height (cm) | Weight (kg) | Plasma Volume Method | No. pregnancy measurements | Postpartuma | Postpartum plasma volume (mL) |
|---|---|---|---|---|---|---|---|---|---|---|
Paintin, 1962 [42] | UK | 20 | 1 | 18-31b | 164.4 | 45.8–78.3b | EBD | 4 | 7–8 weeks | 2775 |
Hytten, 1963 [14] | UK | 39 | 1 | 24.9 ± 5.8 | 162.4 ± 6.1 | 58.2 ± 5.9 | EBD | 8 | 6–8 weeks | 2699 |
Gibson, 1973 [13] | UK | 9 | > 1 | 28.1 ± 2.9 | 156.7 ± 3.7 | 56.8 ± 7.3 | EBD | 2 | 3 months | 2344 |
Pirani, 1973 [10] | UK | 56 | 1 | 20.8 | 155.5 | NA | EBD | 7 | 6–8 weeks | 2545 |
Taylor, 1979 [41] | UK | 24 | 1c | 27.1 ± 3.4 | 163.5 ± 4.9 | 60.1 ± 8.8 | EBD | 2 | 4–6 months | 2340 |
Bruinse, 1985 [46] | The Netherlands | 37 | 0.6 ± 0.7d | 25.4 ± 3.6 | 167.1 ± 5.8 | 61.7 ± 7.9 | EBD | 3 | 6 days, 6 weekse, and 6 months | 2557 |
Abudu, 1988 [45] | Nigeria | 20 | 1 | 23.9 ± 5.0 | 163.0 ± 4.1 | 58.9 ± 7.9 | EBD | 2 | 8 weeks | 2165 |
Pivarnik, 1994 [43] | USA | 5 | NA | 29.0 ± 4 | 159.0 ± 5.0 | 65.3 ± 4.6 | EBD | 2 | 12 weeks | 2355 |
Whittaker, 1996 [15] | UK | 69 | 0–3 | 29.3f | NA | NA | EBD | 6 | 12 weeksg | 2382 |
Vargas, 2007 [44] | Bolivia: | Â | Â | Â | Â | Â | CO | Â | Â | Â |
Andean | 42 | 3.4 ± 0.3 | 27.2 ± 6.4 | 150.0 ± 0.6 | 58.8 ± 1.5 |  | 2 | 4 months | 2482 | |
European | 26 | 2.3 ± 0.2 | 32.4 ± 4.0 | 162.0 ± 1.3 | 63.5 ± 2.5 |  | 2 | 4 months | 2631 |