Article
Obstetrics & Gynecology
Yi-Yan Chen, Chien-Chu Huang, Chih-Yi Yang, Tsan-Hung Chiu, Ming Ho
Summary: This case report describes a case of twin reversed arterial perfusion syndrome in a monochorionic monoamniotic twin pregnancy. Through regular sonography follow-up, a smooth delivery was achieved without any intervention.
TAIWANESE JOURNAL OF OBSTETRICS & GYNECOLOGY
(2021)
Article
Medicine, General & Internal
Punit Hans
Summary: Twin reversed arterial perfusion (TRAP) sequence is a rare condition in monochorionic pregnancies where one severely anomalous twin is perfused by its co-twin. The exact pathogenesis of TRAP sequence is unknown and the presence of vascular anastomoses alone is not enough to cause its development. Retrograde blood flow through arterio-arterial anastomoses increases the possibility of diagnosing TRAP sequence in suspected monochorionic twin pregnancies.
CUREUS JOURNAL OF MEDICAL SCIENCE
(2022)
Editorial Material
Obstetrics & Gynecology
Jiao Yi, Xiumei Wu
Summary: This study presents a case of twin reversed arterial perfusion syndrome with spontaneous interruption of blood supply in the acardiac twin.
INTERNATIONAL JOURNAL OF GYNECOLOGY & OBSTETRICS
(2021)
Article
Medicine, General & Internal
Izabela Walasik, Magdalena Litwinska, Katarzyna Janiak, Krzysztof Szaflik, Piotr Kaczmarek, Artur Ludwin, Ewelina Litwinska
Summary: This study compared the short- and long-term outcomes of monochorionic twin pregnancies with the Twin Reversed Arterial Perfusion Sequence (TRAP) using two different techniques: interstitial fetal laser (IFL) and endoscopic cord occlusion (CO). The study found that IFL was associated with a higher risk of early pregnancy loss, but lower risks of preterm birth and neurological disabilities in survivors, while CO showed the opposite results.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Medicine, General & Internal
Nguyen Duy Anh, Nguyen-Thi Thu Ha, Nguyen-Thi Sim, Nguyen Khac Toan, Phan-Thi Huyen Thuong, Nguyen Minh Duc
Summary: This article describes the first case in Vietnam of Twin Reversed Arterial Perfusion (TRAP) sequence to receive laser surgery. After emergency laser treatment, the pregnancy was successfully maintained for 8 weeks and ended by cesarean section.
WORLD JOURNAL OF CLINICAL CASES
(2022)
Review
Medicine, General & Internal
Kok-Seong Chan, Ya-Chun Chuang, Tzu-Yi Lin, Steven W. Shaw
Summary: Taiwanese Obstetricians typically opt for conservative treatment for TRAP sequence, occasionally performing amnio-reduction. Radiofrequency ablation, a minimally invasive technique, has not been used in Taiwan for treating TRAP sequence before.
JOURNAL OF THE FORMOSAN MEDICAL ASSOCIATION
(2021)
Article
Medicine, General & Internal
Lan Zhang, Hongli Liu, Shuai Huang, Chao Tong, Zhigang Wang, Hongbo Qi, Philip N. Baker, Mark D. Kilby
Summary: This study evaluated alterations in fetal Doppler parameters before and after radiofrequency ablation surgery for twin reversed arterial perfusion sequence (TRAPs). The findings suggest that pump fetuses after surgery, with a gestational age of 20 weeks or more, may experience increased middle cerebral artery peak systolic velocity (MCA-PSV) and middle cerebral artery pulsatility index (MCA-PI), indicating the need for early intervention.
FRONTIERS IN MEDICINE
(2022)
Article
Obstetrics & Gynecology
Eva Christin Weber, Florian Recker, Ingo Gottschalk, Brigitte Strizek, Annegret Geipel, Ulrich Gembruch, Christoph Berg
Summary: Intrauterine intervention in pregnancies complicated by MOMA TRAP significantly improves neonatal survival, yet still carries a substantial risk for IUD.
FETAL DIAGNOSIS AND THERAPY
(2021)
Review
Pathology
Ami Mon, James Yip, Ivica Zalud, Karen S. Thompson
Summary: TRAP pregnancies involving monochorionic triplets are extremely rare, but early diagnosis and invasive interventions have been shown to be crucial in the successful treatment of these cases.
PEDIATRIC AND DEVELOPMENTAL PATHOLOGY
(2021)
Article
Medicine, General & Internal
Saud Alshanafey, Maha Al-Nemer, Maha Tulbah, Rubina M. A. Khan, Nada Al Sahan, Maisoon Al Mugbel, Fahad Al Hazzani, Gawaher Almutairi, Wesam Kurdi
Summary: This article reports a single-center study over a 13-year period on the management of 8 cases of TRAP syndrome. The results showed that all the normal fetuses survived through different surgical interventions. Therefore, cord ligation and radiofrequency ablation are effective and safe treatment options for TRAP syndrome.
ANNALS OF SAUDI MEDICINE
(2023)
Article
Genetics & Heredity
Kuntharee Traisrisilp, Suchaya Luewan, Fuanglada Tongprasert, Kasemsri Srisupundit, Theera Tongsong
Summary: This study aimed to assess fetal hemodynamic adaptions to occlusive procedures, finding that these procedures may exacerbate heart failure in some cases. Certain indices such as preload index and Tei index could predict the risk of heart failure following occlusion. Performing occlusive procedures before deterioration of cardiac function may lead to more successful outcomes.
TWIN RESEARCH AND HUMAN GENETICS
(2021)
Review
Obstetrics & Gynecology
Annachiara Vitucci, Nicola Fratelli, Anna Fichera, Enrico Sartori, Federico Prefumo
Summary: This study retrospectively analyzed the neonatal survival rate after intra-fetal laser (IFL) treatment for twin reversed arterial perfusion (TRAP) sequence and investigated the impact of gestational age at the time of procedure. The overall neonatal survival rate after IFL was found to be 79%, and the gestational age (<16(+0) weeks or >= 16(+0) weeks) did not significantly affect the survival rate.
INTERNATIONAL JOURNAL OF GYNECOLOGY & OBSTETRICS
(2022)
Article
Acoustics
Che-Chou Shen, Ri-Cheng Lin, Nien-Hung Wu
Summary: This study proposes a Golay-encoded ultrasound (US) monitoring method to address the difficulties in monitoring high-intensity focused ultrasound (HIFU) treatment caused by strong HIFU interference. By effectively removing HIFU interference patterns, this method improves the image quality metrics and increases the echo magnitude in real-time B-mode imaging. Experimental results show that Golay decoding significantly increases the PSNR of US monitoring images and improves the SSIM index, making the B-mode image with HIFU transmission visually indistinguishable from the one without HIFU transmission.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2022)
Review
Oncology
Sin Yuin Yeo, Grischa Bratke, Holger Gruell
Summary: High Intensity Focused Ultrasound (HIFU) is a non-invasive method for ablating tumors and treating painful bone lesions. It has been used for pain relief in bone metastases and primary tumors for 20 years, as well as for local treatment of bone tumors. This review summarizes 20 years of literature on HIFU treatment of bone malignancies, focusing on pain palliation, treatment efficacy, and safety.
Review
Obstetrics & Gynecology
Xiaoqing Ye, Jiayan Wang, Jing Lu, Nan Li, Wenping Ding, Yuxia Fu, Min Chen
Summary: Twin reversed arterial perfusion sequence is a severe and unique complication of monochorionic multiple pregnancy. Proper management can maximize the chances of survival for the pump twin.
MATERNAL-FETAL MEDICINE
(2022)
Article
Obstetrics & Gynecology
Shinji Katsuragi, Hiroaki Tanaka, Junichi Hasegawa, Akiko Kurasaki, Masamitsu Nakamura, Naohiro Kanayama, Masahiko Nakata, Eijiro Hayata, Takeshi Murakoshi, Jun Yoshimatsu, Kazuhiro Osato, Kayo Tanaka, Tomoaki Oda, Akihiko Sekizawa, Takako Shimaoka, Isamu Ishiwata, Jun Takahashi, Tomoaki Ikeda
Summary: This study analyzed 35 cases of cerebrovascular diseases related to maternal deaths in Japan during pregnancy. The results showed that more than 40% of cases experienced fetal asphyxia, and 20% ended in fetal death. Maternal respiratory support and rapid delivery were identified as key factors for improving perinatal outcomes.
JOURNAL OF MATERNAL-FETAL & NEONATAL MEDICINE
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Mariko Yamamoto, Shin Yoshizawa
Summary: This study successfully achieved two-dimensional and sub-pixel displacement detection with high spatial resolution using deep-learning methodology, enabling monitoring of small and local tissue deformations induced by HIFU exposure.
JOURNAL OF MEDICAL ULTRASONICS
(2022)
Review
Radiology, Nuclear Medicine & Medical Imaging
Kiyotake Ichizuka, Kohei Seo, Tetsuya Izudepski, Masaaki Nagatsuka
Summary: High-intensity focused ultrasound is a non-invasive treatment method that uses ultrasound beams to transmit thermal energy and cavitation effects to tissues inside the body, allowing for the treatment of tumors without damaging surrounding tissues. This approach has been applied in various fields, including fetal therapy, with promising results.
JOURNAL OF MEDICAL ULTRASONICS
(2022)
Article
Obstetrics & Gynecology
Reiko Suzuki, Natsumi Furuya, Junichi Hasegawa, Chika Homma, Yuriko Iwahata, Nao Suzuki
Summary: This article presents a case report of ultrasound pathological findings of placental abruption (PA) detected using superb microvascular imaging (SMI). SMI can contribute to a more accurate PA diagnosis that may lead to timely administration of obstetric intervention.
TAIWANESE JOURNAL OF OBSTETRICS & GYNECOLOGY
(2022)
Article
Obstetrics & Gynecology
Junichi Hasegawa, Hiroaki Tanaka, Shinji Katsuragi, Masafumi Nii, Akihiko Sekizawa, Isamu Ishiwata, Tomoaki Ikeda
Summary: This study found that there have been no maternal deaths due to GAS-TSS reported in Japan after the COVID-19 pandemic, which may be attributed to the widespread use of facemasks and frequent disinfection among the Japanese population. It is recommended to continue wearing facemasks and practicing frequent disinfection during pregnancy to prevent various infectious diseases, including serious GAS infections.
JOURNAL OF MATERNAL-FETAL & NEONATAL MEDICINE
(2022)
Article
Obstetrics & Gynecology
Toshiaki Yasuoka, Noriyuki Iwama, Kuniaki Ota, Junichi Hasegawa, Hirohito Metoki, Masatoshi Saito, Takashi Sugiyama, Nao Suzuki
Summary: This study aimed to investigate the pregnancy outcomes of female cancer survivors in Japan and found that cancer survivors had poorer pregnancy outcomes compared to women without a history of malignant tumors.
JOURNAL OF MATERNAL-FETAL & NEONATAL MEDICINE
(2022)
Article
Medicine, General & Internal
Tatsuya Arakaki, Junichi Hasegawa, Akihiko Sekizawa, Tomoaki Ikeda, Isamu Ishiwata, Katsuyuki Kinoshita
Summary: This study found that severe COVID-19 in pregnant women is associated with gestational age and maternal age, and the rate of preterm birth due to infection is significantly higher in severe cases.
Article
Obstetrics & Gynecology
Chika Homma, Junichi Hasegawa, Yoko Nishimura, Natsumi Furuya, Masamitsu Nakamura, Nao Suzuki
Summary: This study investigated whether the declaration of an emergency state in Japan due to COVID-19 affected maternal transports and preterm birth rates. The findings showed that the declaration of emergency state led to a decrease in maternal transport due to preterm labor, but did not affect the actual rate of preterm delivery.
INTERNATIONAL JOURNAL OF GYNECOLOGY & OBSTETRICS
(2023)
Article
Obstetrics & Gynecology
Tomomi Matsushita, Tatsuya Arakaki, Akihiko Sekizawa, Junichi Hasegawa, Hiroaki Tanaka, Shinji Katsuragi, Masahiko Nakata, Takeshi Murakoshi, Tomoaki Ikeda, Isamu Ishiwata
Summary: This study examined the characteristics of maternal deaths due to cardiovascular diseases (CVDs) and the quality of care provided to patients in Japan. The findings revealed that aortic dissection was the leading cause of death, followed by peripartum cardiomyopathy and pulmonary hypertension. Early symptoms often occurred during the prenatal period, emphasizing the importance of risk assessment, patient awareness, and a multidisciplinary team approach to improve maternal care.
JOURNAL OF MATERNAL-FETAL & NEONATAL MEDICINE
(2023)
Editorial Material
Obstetrics & Gynecology
Masahiro Nakao, Yukiko Nanba, Asumi Okumura, Junichi Hasegawa, Satoshi Toyokawa, Kiyotake Ichizuka, Naohiro Kanayama, Shoji Satoh, Nanako Tamiya, Akihito Nakai, Keiya Fujimori, Tsugio Maeda, Hideaki Suzuki, Mitsutoshi Iwashita, Akira Oka, Tomoaki Ikeda
OBSTETRICAL & GYNECOLOGICAL SURVEY
(2023)
Article
Obstetrics & Gynecology
Masahiro Nakao, Michael G. Ross, Shoichi Magawa, Satoshi Toyokawa, Kiyotake Ichizuka, Naohiro Kanayama, Shoji Satoh, Nanako Tamiya, Akihito Nakai, Keiya Fujimori, Tsugio Maeda, Akira Oka, Hideaki Suzuki, Mitsutoshi Iwashita, Tomoaki Ikeda
Summary: This study aimed to determine the timing of interventions to prevent severe fetal metabolic acidemia. The results showed that the rate at which fetal BDecf reached critical values differed based on the progression of decelerations. Cases with rapid progression may benefit from operative intervention if the decelerations persist for longer than 2 hours, while cases with slow progression may require up to 3 hours to reach critical values before considering surgery.
ACTA OBSTETRICIA ET GYNECOLOGICA SCANDINAVICA
(2023)
Editorial Material
Radiology, Nuclear Medicine & Medical Imaging
Junichi Hasegawa, Yoko Nishimura, Shota Saji
JOURNAL OF MEDICAL ULTRASONICS
(2023)
Article
Obstetrics & Gynecology
Koji Hashii, Junichi Hasegawa, Tomoyuki Yamashita, Hiroaki Tanaka, Atsushi Sakurai, Osamu Samura, Akihiko Sekizawa, Tomoaki Ikeda, Isamu Ishiwata
Summary: This article provides an overview of J-CIMELS and its simulation program, which has successfully reduced maternal mortality in Japan. The project analyzed the tendency for obstetricians to delay their response to maternal deterioration and emphasized the importance of monitoring vital signs to predict deterioration. The J-MELS simulation program has significantly improved obstetric care providers' practices and reduced the incidence of obstetric hemorrhage in Japan.
JOURNAL OF OBSTETRICS AND GYNAECOLOGY RESEARCH
(2023)
Article
Obstetrics & Gynecology
Natsumi Furuya, Junichi Hasegawa, Shota Saji, Chika Homma, Yoko Nishimura, Nao Suzuki
Summary: This study investigated the predictive value of obstetric findings in using PGE2 vaginal inserts for cervical ripening, and compared the optimal method of cervical ripening between PGE2 vaginal inserts and/or cervical dilators. The results showed that PGE2 vaginal inserts were effective when the uterine cervical os was at least 2 cm in diameter. In cases of extremely immature cervical ripening, it was feasible to use PGE2 vaginal inserts before mechanical cervical dilatation.
JOURNAL OF OBSTETRICS AND GYNAECOLOGY RESEARCH
(2023)
Editorial Material
Medicine, General & Internal
Shota Saji, Junichi Hasegawa, Junki Koike, Misato Takatsuki, Natsumi Furuya, Nao Suzuki
Summary: Fetal Vascular Malperfusion is a pathological condition that affects the fetal circulation, leading to microthrombi formation and organ damage, resulting in cerebral palsy. This condition also has adverse effects on the placenta, causing fetal growth restriction and hypoxia.