<![CDATA[Persalinan kurang bulan merupakan penyebab utama mortalitas dan morbiditas perinatal. Angka kejadian persalinan kurang bulan yang disebabkan infeksi sebesar 40–50%. Tujuan penelitian ini untuk membuktikan bahwa persalinan spontan kurang bulan tanpa ketuban pecah dini didahului oleh korioamnionitis serta mengetahui perbandingan jenis dan jumlah mikroorganisme aerob penyebab korioamnionitis pada persalinan spontan kurang dan cukup bulan tanpa ketuban pecah dini. Penelitian ini merupakan studi komparatif dengan rancangan studi silang (cross sectional). Penelitian ini dilakukan di Rumah Sakit Dr. Hasan Sadikin Bandung dan rumah sakit jejaringnya periode Juli–Agustus 2009 dengan subjek penelitian sebanyak 53 penderita. Analisis data dengan uji statistik digunakan uji chi-kuadrat dan untuk membandingkan perbedaan dua usia persalinan rata-rata digunakan uji beda (uji t). Kemaknaan ditentukan berdasarkan nilai p<0,05. Tidak terdapat perbedaan karateristik penderita pada kedua kelompok subjek penelitian. Terdapat hubungan bermakna kedua kelompok dengan korioamnionitis (p=0,004), terdapat perbedaan bermakna jenis mikroorganisme aerob antara kedua kelompok (p=0,025), dan terdapat perbedaan bermakna jumlah mikroorganisme aerob antara kedua kelompok (p=0,003). Simpulan, persalinan spontan kurang bulan tanpa ketuban pecah dini disebabkan korioamnionitis dan jumlah mikroorganisme mempengaruhi kejadian persalinan spontan kurang bulan tanpa ketuban pecah dini. [MKB. 2012;44(1):44–9].Kata kunci: Korioamnionitis, mikroorganisme aerob, persalinan spontan kurang bulan tanpa ketuban pecah diniSpecies and Number of Aerob Microorganism in Preterm and Term Spontaneous Delivery with Intact MembranePreterm birth is the main cause of perinatal mortality and morbidity. Prevalence of preterm delivery which is caused by infection is 40–50%. The aim of this study was to determine that spontaneous preterm delivery without premature rupture of the membrane is initiated by chorioamnionitis and to find out the comparison of aerob microorganism species and number from spontaneous preterm and term delivery without premature rupture of the membrane. This was a comparative cross sectional study. This study was conducted in Dr. Hasan Sadikin Hospital Bandung and satelite hospital, from July to August 2009, the subjects were 53 patients. This study analyzed with chi-square and t-test to differentiate average of gestational age with p<0.05. There’s no significant difference of characteristic between two research subject groups, significant difference between two research subject groups with chorioamnionitis (p=0.004), significant difference of aerob microorganism species between two research subject groups (p=0.025) and significant difference number of aerob microorganism between two research subjects (p=0.003). In conclusions, chorioamnionitis can initiate a spontaneous preterm delivery without premature rupture of the membrane and the number of microorganism indicated the virulence of microorganism that caused chorioamnionitis which is initiated spontaneous preterm delivery without premature rupture. [MKB. 2012;44(1):44–9].Key words: Aerob microorganism, chorioamnionitis, spontaneous preterm delivery without premature rupture of the membrane DOI: http://dx.doi.org/10.15395/mkb.v44n1.211]]>
