OBJECTIVE: The Amnisure ROM test is approved for the diagnosis of rupture of membranes (ROM). Yet, a fraction of patients with a positive test have intact membranes by sterile speculum examination. The objective of this study was to determine the clinical significance of this finding. METHODS: The study population consisted of four groups of nulliparous women at term: (1) not in labor without clinical evidence of ROM (n = 125); (2) in labor without clinical ROM with a negative Amnisure test (n = 56); (3) in labor without clinical ROM with a positive Amnisure test (n = 25); and (4) in labor with clinical ROM (n = 30). The Amnisure test was performed in cases without clinical ROM (Groups 1, 2 and 3). RESULTS: (1) The Amnisure test was positive more frequently in women in labor with intact membranes than in patients not in labor at term without ROM (30.9% (25/81 women) vs. 4.8% (6/125 women); p < 0.001); (2) patients in labor without clinical ROM with a positive Amnisure test had a significantly shorter admission-to-delivery interval than those in labor without clinical ROM with a negative Amnisure test (p < 0.05). CONCLUSION: (1) A positive Amnisure test is present in about one-third nulliparous women at term presenting in labor with intact membranes; (2) patients with a positive Amnisure test had a shorter admission-to-delivery interval than those with a negative test.
OBJECTIVE: The Amnisure ROM test is approved for the diagnosis of rupture of membranes (ROM). Yet, a fraction of patients with a positive test have intact membranes by sterile speculum examination. The objective of this study was to determine the clinical significance of this finding. METHODS: The study population consisted of four groups of nulliparous women at term: (1) not in labor without clinical evidence of ROM (n = 125); (2) in labor without clinical ROM with a negative Amnisure test (n = 56); (3) in labor without clinical ROM with a positive Amnisure test (n = 25); and (4) in labor with clinical ROM (n = 30). The Amnisure test was performed in cases without clinical ROM (Groups 1, 2 and 3). RESULTS: (1) The Amnisure test was positive more frequently in women in labor with intact membranes than in patients not in labor at term without ROM (30.9% (25/81 women) vs. 4.8% (6/125 women); p < 0.001); (2) patients in labor without clinical ROM with a positive Amnisure test had a significantly shorter admission-to-delivery interval than those in labor without clinical ROM with a negative Amnisure test (p < 0.05). CONCLUSION: (1) A positive Amnisure test is present in about one-third nulliparous women at term presenting in labor with intact membranes; (2) patients with a positive Amnisure test had a shorter admission-to-delivery interval than those with a negative test.
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