جستجوی ارتباط بین سطح مقطع بندناف با وزن جنین در سونوگرافی

نوع مقاله : اصیل پژوهشی

نویسندگان

1 استادیار گروه رادیولوژی، دانشکده پزشکی، دانشگاه آزاد اسلامی واحد مشهد، مشهد، ایران.

2 پزشک عمومی، دانشکده پزشکی، دانشگاه آزاد اسلامی واحد مشهد، مشهد، ایران.

چکیده

مقدمه: وزن غیر طبیعی جنین در زمان تولد با افزایش خطر عوارض نوزادی حوالی زایمان همراه است. تکنیک های متفاوتی برای ارزیابی وزن جنین به کار می رود که مدرن ترین آن استفاده از اولتراسونوگرافی است. اما این روش هم در  جنین های ماکروزوم می تواند خطای وزنی بالغ بر صدها گرم ایجاد کند. لذا مطالعه حاضر با هدف بررسی رابطه بین سطح مقطع بندناف و وزن جنین از طریق سونوگرافی انجام شد.
روش کار: این مطالعه توصیفی- تحلیلی و مقطعی در سال1393 بر روی 200 زن باردار مراجعه کننده به بخش سونوگرافی بیمارستان های 22 بهمن و آریا مشهد انجام شد. وزن جنین بر اساس شاخص های بیومتریک توسط سونوگرافی تخمین زده شد و سطح مقطع بندناف برای تمام زنان باردار اندازه گیری شد. تجزیه و تحلیل داده ها با استفاده از نرم افزار آماری SPSS (نسخه 20)، Statistica-10 انجام شد.جهت بررسی رابطه بین سطح مقطع بند ناف و وزن جنین از رگرسیون خطی و ضریب همبستگی پیرسون استفاده گردید. میزان p کمتر از 05/0 معنادار در نظر گرفته شد.
یافته‌ها: 107 نفر (5/53%) از زنان باردار مورد بررسی، در سه ماهه دوم بارداری قرار داشتند. 126 جنین (63%) در صدک وزنی محدوده 50-30 قرار داشتند. سطح مقطع بندناف در 50 جنین(25%) زیر 50 میلی متر مربع و در 48 جنین (24%) بین 200-150 میلی متر مربع بود. بین سطح مقطع بندناف با وزن جنین و با صدک وزن در هر دو جنس مذکر و مؤنث در سه ماهه دوم بارداری ارتباط مستقیم و معناداری وجود داشت (0001/0>p)، اما این ارتباط در سه ماهه سوم بارداری معنادار نبود (05/0<p).
نتیجه‌گیری: بین سطح مقطع بندناف و وزن جنین در سه ماهه دوم بارداری ارتباط معناداری وجود دارد، لذا شاخص فوق در کنار شاخص های بیومتریک جهت تخمین دقیق تر وزن جنین سودمند می باشد.

کلیدواژه‌ها


عنوان مقاله [English]

Assessment of relationship between cross sectional area of umbilical cord and fetal weight in Ultrasonography

نویسندگان [English]

  • Narges Afzali 1
  • Mahsa Noferesti 2
1 Assistant Professor, Department of Radiology, School of Medicine, Islamic Azad University, Mashhad Branch, Mashhad, Iran
2 General Physician, School of Medicine, Islamic Azad University, Mashhad, Mashhad Branch, Iran.
چکیده [English]

Introduction: Abnormal fetal weight at birth is associated with increased risk of perinatal neonatal outcomes. Different techniques are used to assess fetal weight that the most modern is the use of ultrasonography. But this method also can cause weighing error of hundreds of grams in macrosomic fetuses. Therefore, this study was performed with aim to assess the relationship between the cross-sectional area of the umbilical cord and fetal weight through sonography.
Methods: This descriptive-analytical and cross-sectional study was performed on 200 pregnant women with gestational age of 17-40 weeks referred to Mashhad Aria and 22 Bahman Hospitals from September 2013 to 2014. The fetal weight was estimated based on biometric indexes by sonography and cross-sectional area of umbilical cord were measured for all pregnant women. Data were analyzed by SPSS statistical software (version 20), and Statistica-10, linear regression and Pearson’s correlation coefficient. PResults: 107 pregnant women (53.5%) were in second trimester of pregnancy. 126 cases of fetuses (63%) were in 30-50 weight percentile. The cross-sectional area of umbilical cord in 50 cases (25%) was 2 and in 48 (24%) was 150-200 mm2. There was a significant direct relationship between cross-sectional area of umbilical cord with fetal weight and weight percentile in both female and male during second trimester of pregnancy (P<0.0001), but this relationship was not significant in third trimester (P>0.05).
Conclusion: There was a significant relationship between cross-sectional area of umbilical cord with fetal weight in second trimester of pregnancy, so, it can be useful along with biometric indexes to more accurate estimation of fetal weight.

کلیدواژه‌ها [English]

  • Cross-Sectional area
  • Fetal weight
  • Ultrasonography
  • Umbilical cord
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