References
1 Graham EM, Ruis KA, Hartman AL, Northington FJ, Fox HE. A systematic review of the role of intrapartum hypoxia-ischemia in the causation of neonatal encephalopathy. American journal of obstetrics and gynecology. 2008;199:587-95.
2 Redline RW. Clinical and pathological umbilical cord abnormalities in fetal thrombotic vasculopathy. Human pathology. 2004;35:1494-8.
3 Nakamura M, Umehara N, Ishii K, Sasahara J, Kiyoshi K, Ozawa K, et al. A poor long-term neurological prognosis is associated with abnormal cord insertion in severe growth-restricted fetuses. Journal of perinatal medicine. 2018;46:1040-7.
4 Hasegawa J, Toyokawa S, Ikenoue T, Asano Y, Satoh S, Ikeda T, et al. Relevant Obstetric Factors for Cerebral Palsy: From the Nationwide Obstetric Compensation System in Japan. PloS one. 2016;11:e0148122.
5 Nakao M, Okumura A, Hasegawa J, Toyokawa S, Ichizuka K, Kanayama N, et al. Fetal heart rate pattern in term or near-term cerebral palsy: a nationwide cohort study. Am J Obstet Gynecol. 2020.
6 Palisano R, Rosenbaum P, Walter S, Russell D, Wood E, Galuppi B. Development and reliability of a system to classify gross motor function in children with cerebral palsy. Dev Med Child Neurol. 1997;39:214-23.
7 Macones GA, Hankins GD, Spong CY, Hauth J, Moore T. The 2008 National Institute of Child Health and Human Development workshop report on electronic fetal monitoring: update on definitions, interpretation, and research guidelines. Obstetrics and gynecology. 2008;112:661-6.
8 Electronic fetal heart rate monitoring: research guidelines for interpretation. National Institute of Child Health and Human Development Research Planning Workshop. American journal of obstetrics and gynecology. 1997;177:1385-90.
9 Phelan JP, Ahn MO. Fetal Heart Rate Observations in 300 Term Brain-damaged Infants. Journal of maternal-fetal investigation : the official journal of French Society of Ultrasound in Medicine and Biology [et al]. 1998;8:1-5.
10 JSOG, editor. Glossary of obstetrics and gynecology. 4th ed. Tokyo: Kyorin-sha; 2018.
11 Strong TH, Jr., Jarles DL, Vega JS, Feldman DB. The umbilical coiling index. American journal of obstetrics and gynecology. 1994;170:29-32.
12 Hasegawa J, Matsuoka R, Ichizuka K, Sekizawa A, Okai T. Ultrasound diagnosis and management of umbilical cord abnormalities. Taiwanese journal of obstetrics & gynecology. 2009;48:23-7.
13 Hasegawa J, Matsuoka R, Ichizuka K, Sekizawa A, Farina A, Okai T. Velamentous cord insertion into the lower third of the uterus is associated with intrapartum fetal heart rate abnormalities. Ultrasound Obstet Gynecol. 2006;27:425-9.
14 Predanic M, Perni SC, Chervenak FA. Antenatal umbilical coiling index and Doppler flow characteristics. Ultrasound Obstet Gynecol. 2006;28:699-703.
15 Georgiou HM, Rice GE, Walker SP, Wein P, Gude NM, Permezel M. The effect of vascular coiling on venous perfusion during experimental umbilical cord encirclement. American journal of obstetrics and gynecology. 2001;184:673-8.
16 Chan JS, Baergen RN. Gross umbilical cord complications are associated with placental lesions of circulatory stasis and fetal hypoxia. Pediatr Dev Pathol. 2012;15:487-94.
17 Tantbirojn P, Saleemuddin A, Sirois K, Crum CP, Boyd TK, Tworoger S, et al. Gross abnormalities of the umbilical cord: related placental histology and clinical significance. Placenta. 2009;30:1083-8.
18 Hasegawa J, Matsuoka R, Ichizuka K, Nakamura M, Sekizawa A, Okai T. Do fetal heart rate deceleration patterns during labor differ between various umbilical cord abnormalities? Journal of perinatal medicine. 2009;37:276-80.
19 Hasegawa J, Matsuoka R, Ichizuka K, Kotani M, Nakamura M, Mikoshiba T, et al. Atypical variable deceleration in the first stage of labor is a characteristic fetal heart-rate pattern for velamentous cord insertion and hypercoiled cord. The journal of obstetrics and gynaecology research. 2009;35:35-9.
20 Hasegawa J, Matsuoka R, Ichizuka K, Otsuki K, Sekizawa A, Farina A, et al. Cord insertion into the lower third of the uterus in the first trimester is associated with placental and umbilical cord abnormalities. Ultrasound Obstet Gynecol. 2006;28:183-6.