Table 1.
Relevant data of retrieved studies
| Authors, year, Country |
Study Design | Study period (years) |
Overall deliveries (n) | RP diagnosis (min) and definition |
Prevalence of RP | Management |
|---|---|---|---|---|---|---|
|
Meyer, 2020 Israel, [12] |
Retrospective | 8 | 16,867 | 60, D | 6.5% (including complete and partial retained placenta) | Active |
|
Granfors, 2020 Sweden, [13] |
Retrospective | 6 | 49,598 | NS, E | 2.0% | NS |
|
Rottenstreich, 2019 Israel [14] |
Retrospective | 13 | 170,009 | 40, C | 2.70% | Active |
| Ruiter, 2019 Netherlands [15] | Retrospective | 11 | 359,737 | NS, E | 2.7%, (first pregnancy), 17% (recurrence in second pregnancy) | NS |
|
Favilli, 2018 Italy [16] |
Retrospective | 10 | 22,749 | 30, B | 0.6% | Active |
|
Rotem, 2018 Israel [17] |
Retrospective | 25 | 263,053 | 30, B |
0.7% (Hypertenstìyve disorders) 0.6% (No hypertensyve disorders) |
Active |
| Vannuccini, 2018 Italy [18] | Retrospective | 5 |
1168 (Spontaneous pregnancies) 188 (ART pregnancies) |
NS, E |
6.30% (ART pregnancies) 2.8% (spontaneous pregnancies) |
NS |
| Endler, 2017 Sweden [19] | Retrospective | 40 | 494,000 | 30, B | 2.4%, (index births) 3.2% (second generation births) | Observational + active |
| Greenbaum, 2017 Israel [9] | Retrospective | 25 | 205,522 | 30, B | 4.8% | Observational |
|
Anteby, 2017 Israel [7] |
Prospective | 2 | 19,359 | 60, D | 1.5% | Active |
|
Alufi, 2017 Israel [6] |
Retrospective | 4 | 18,146 | 30, B | 0.5% | Observational |
| Berlac, 2017 Denamark [20] | Retrospective | 14 |
11,739 (women with endometriosis disease) |
NS, E | 2.20% | Observational |
|
Aziz, 2016 New Jersey [21] |
Retrospective | 5 | 769 | NS, E |
1.05% (ART pregnancies) 1% (spontaneous pregnancies) |
NS |
|
Sarit, 2016 Israel [22] |
Retrospective | 0,5 | 4227 | 60, D | 1.9% | Active |
| Jackson, 2015 California [23] | Retrospective | 11 |
193 (spontaneous pregnancies 185 (ART pregnancies) |
NS, E |
0% (spontaneous pregnancies) 2.7% (ART pregnancies) |
Observational |
|
Shinar, 2015 Israel [24] |
Retrospective | 5 | 25,160 | 60, B | 9.00% | Active |
|
John, 2015 Nigeria [25] |
Retrospective | 5 | 15,789 | 30, B | 0.59% | Observational |
| Coviello, 2015 USA [3] | Retrospective | 6 | 228,562 | 30, B | 1.12% | Observational |
| Torricelli, 2015 Italy [26] | Prospective | 3 | 2354 | NS, E | NS | Observational |
| Ashwal, 2014 Israel [27] | Retrospective | 5 | 33,925 | 30, B | 1.4% | Active |
| Endler, 2014 Sweden [2] | Retrospective | 12 | 386,607 | NS, E | 2.17% | Active |
| Magann, 2013 USA [28] | Retrospective | 2 | 452 | 15, A | NS | Observational |
| Nikolajsen, 2013 Denmark [29] | Retrospective | 9 | 10,334 | 30, B | 2.60% | Observational |
| Endler, 2012 Sweden [30] | Retrospective | 3 | 16,209 | 30, B | 2.6% | Active |
|
Farhi, 2010 Israel [31] |
Retrospective | 2 | 280 | NS, E | NS | NS |
| Obajimi, 2009 Nigeria [32] | Retrospective | 5 | 4980 | 30, B | 2.13% | Observational |
| Rizwan, 2009 Pakistan [33] | Retrospective + prospective | 3 | 8782 | 30, B | 1.02% | Active |
| Owolabi, 2008 Nigeria [34] | Prospective | 7 | 6160 | 30, B | 1.9% | Observational + active |
| Panpaprai, 2007 Thailand [35] | Retrospective | 3 | 234 (78 cases, 156 controls) | 30, B | NS | Observational |
| Chhabra, 2002 India [8] | Retrospective | 15 | 29,784 | NS, E | 0.23% | Observational + active |
|
Titz, 2001 Australia [36] |
Retrospective | 7 | 3734 | 60, D | 3.00% | Observational |
| Adelusi, 1997 Saudi Arabia [37] | Retrospective | 5 | 22,045 | NS, E | 0.06% | Observational |
|
Soltan, 1997 Saudi Arabia [38] |
Retrospective | 6 | 26,315 | 60, D | 0.55% | Observational |
|
Golan, 1996 Israel [39] |
Retrospective | NS | NS | NS | NS | NS |
|
Dombrowski, 1995 Michigan [40] |
Prospective | 9 | 45,852 | 30, B | 2.00% | Active |
| Combs, 1991 California [41] | Retrospective | 11 | 12,979 | 30, B | 3.3% | Observational |
| Romero,1990 Connecticut [42] | Retrospective | 2 | 792 | 30, B | 3.40% | Observational |
NS Not Specified, RP Retained Placenta, ART Assisted Reproductive Technologies
RP Definition A: third stage of labor lasting > 15 min
RP Definition B: failure to deliver placenta after a 30-min duration of an uncomplicated third stage
RP Definition C: failure to deliver placenta after a 40-min or more duration of an uncomplicated third stage
RP Definition D: failure to deliver placenta after a 60-min or more duration of an uncomplicated third stage
RP Definition E: placenta that requires manual removal