Table IV.

Prevalence of microbial invasion reported for the different obstetrical syndromes

Obstetrical syndromes	Microbial invasion in amniotic fluid
Term not in labor [86,87]	1%
Term in labor [86,87,125]	4%-19%
Premature rupture of membranes at term [119]	34%
Premature rupture of membranes at preterm [30,42,58,61,71,75,82,84,96,100,101,103,105,106,117,121,122,126,128,130 ,131,134,135,143,145,146,150,151,158]	15%-58%
Preterm labor with intact membranes [22-25,28,32,40,75,78-80,97- 99,102,104,107-118,121,123,124,127,129,132-134,136- 142,144,147,149,159,160]	0%-48%
Cervical insufficiency [72,120,152]	8%-52%
Short cervix [91,94,148]	4%-9%
Small for gestational age [156]	0%
Preeclampsia [155]	2%
Vaginal bleeding [95,153,157]	5%-14%