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Yuan Y, He X, Liu P, Pu D, Shi Q, Chen J, Teichmann AT, Zhan P. The effectiveness of single ultrasound-guided high-intensity focused ultrasound (USgHIFU) ablation in managing placenta accreta spectrum (PAS) disorder. Arch Gynecol Obstet 2023; 307:1037-1045. [PMID: 36525091 DOI: 10.1007/s00404-022-06840-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 11/01/2022] [Indexed: 12/23/2022]
Abstract
OBJECTIVE To evaluate the feasibility and effectiveness of single ultrasound-guided high-intensity focused ultrasound (USgHIFU) ablation in managing placenta accreta spectrum (PAS) disorder. MATERIALS AND METHODS We retrospectively analyzed 40 PAS patients between April 2017 and October 2021. All the patients received one session of HIFU treatment. Regular follow-up was done after HIFU treatment until normal menstruation returned and placental tissue disappeared. The patient's reproductive-related outcomes were obtained through telephone interviews. RESULTS The median follow-up time for the 40 patients was 30.50 (15.75-44.00) months and the mean placental tissue elimination time was 45.29 ± 33.32 days. The mean duration of bloody lochia was 13.43 ± 10.01 days, with no incidences of severe bleeding. Notably, Linear regression analysis showed that the residual placenta volume before HIFU was a factor affecting the duration of bloody lochia after HIFU (R2 = 0.284, B = 0.062, P = 0.000). The normal menstrual return time was 58.71 ± 31.14 days. One (2.50%) patient developed an infection. Two (5.00%) patients were subjected to ultrasound-guided suction curettage for persistent vaginal discharge for more than one month without infection. Notably, 7 of the 18 patients who expressed reproductive plans became pregnant during the 4 to 53 months of follow-up without placental abnormalities. The remaining 11 patients were on contraceptives. CONCLUSIONS Single HIFU is an effective treatment option for managing PAS. However, future studies on further treatment strategies to reduce complications and promote patient recovery after HIFU ablation are desirable.
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Affiliation(s)
- Yuan Yuan
- Sichuan Provincial Center for Gynaecology and Breast Diseases, The Affiliated Hospital of Southwest Medical University, No. 25 Taiping Street, Luzhou, 646000, Sichuan, China
- State Key Laboratory of Ultrasound in Medicine and Engineering, Chongqing Medical University, Chongqing, 400016, China
| | - Xian He
- Sichuan Provincial Center for Gynaecology and Breast Diseases, The Affiliated Hospital of Southwest Medical University, No. 25 Taiping Street, Luzhou, 646000, Sichuan, China
| | - Ping Liu
- Sichuan Provincial Center for Gynaecology and Breast Diseases, The Affiliated Hospital of Southwest Medical University, No. 25 Taiping Street, Luzhou, 646000, Sichuan, China
| | - Dali Pu
- Sichuan Provincial Center for Gynaecology and Breast Diseases, The Affiliated Hospital of Southwest Medical University, No. 25 Taiping Street, Luzhou, 646000, Sichuan, China
| | - Qiuling Shi
- State Key Laboratory of Ultrasound in Medicine and Engineering, Chongqing Medical University, Chongqing, 400016, China
- School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, China
| | - Jinyun Chen
- State Key Laboratory of Ultrasound in Medicine and Engineering, Chongqing Medical University, Chongqing, 400016, China
| | - Alexander T Teichmann
- Sichuan Provincial Center for Gynaecology and Breast Diseases, The Affiliated Hospital of Southwest Medical University, No. 25 Taiping Street, Luzhou, 646000, Sichuan, China
| | - Ping Zhan
- Sichuan Provincial Center for Gynaecology and Breast Diseases, The Affiliated Hospital of Southwest Medical University, No. 25 Taiping Street, Luzhou, 646000, Sichuan, China.
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Cambronero S, Dupré A, Mastier C, Melodelima D. Non-invasive High-Intensity Focused Ultrasound Treatment of Liver Tissues in an In Vivo Porcine Model: Fast, Large and Safe Ablations Using a Toroidal Transducer. ULTRASOUND IN MEDICINE & BIOLOGY 2023; 49:212-224. [PMID: 36441030 DOI: 10.1016/j.ultrasmedbio.2022.08.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 07/30/2022] [Accepted: 08/28/2022] [Indexed: 06/16/2023]
Abstract
A toroidal high-intensity focused ultrasound (HIFU) transducer was used to non-invasively treat liver tissues in vivo in a pig model. The transducer was divided into 32 concentric rings with equal surface areas operating at 2.5 MHz. First, attenuation of skin, fat, muscle and liver tissues was measured in fresh animal samples to adjust the energy delivered to the focal zone. Then, 8 animals were included in the present protocol and placed in a dorsal decubitus proclive position at an angle of 15°. The device was held by hand, and sonications were performed during apnea. Two thermal HIFU lesions were created in 40 s in each animal. The average abdominal wall thickness was 14.8 ± 1.3 mm (12.5-17.6 mm). The longest and shortest axes of the HIFU ablations were 20.9 ± 6.3 mm (14.0-33.7 mm) and 14.2 ± 5.5 mm (7.0-22.0 mm), respectively. All HIFU lesions were visible on sonograms. The correlation between the dimensions of the HIFU lesions observed on sonograms and those obtained during gross examination was r = 0.84. Creating large and fast ablations with reliable ultrasound imaging guidance in the liver using this handheld device may represent a new therapeutic option for patients with liver tumors.
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Affiliation(s)
| | - Aurélien Dupré
- LabTAU, INSERM, Centre Léon Bérard, Université Lyon, Lyon, France; Centre Léon Bérard, Lyon, France
| | | | - David Melodelima
- LabTAU, INSERM, Centre Léon Bérard, Université Lyon, Lyon, France
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Guan X, Huang X, Ye M, Huang G, Xiao X, Chen J. Treatment of Placenta Increta With High-Intensity Focused Ultrasound Ablation and Leaving the Placenta in situ: A Multicenter Comparative Study. Front Med (Lausanne) 2022; 9:871528. [PMID: 35463039 PMCID: PMC9021530 DOI: 10.3389/fmed.2022.871528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 03/10/2022] [Indexed: 11/13/2022] Open
Abstract
Objective To explore the feasibility of simple high-intensity focused ultrasound (HIFU) ablation for placenta increta. Methods Ninety-five patients after a vaginal delivery were enrolled in this retrospective cohort study, 53 patients were treated with simple HIFU ablation, and 42 patients were treated with HIFU followed by uterine curettage. Results All 95 patients were successfully treated with a single-session HIFU procedure, and in the control group, the necrotic placental tissue was removed with curettage. Vaginal hemorrhage did not occur in either group. The duration of bloody lochia was 25.9 ± 8.6 days in the sHIFU group and 24.2 ± 8.8 days in the control group (P > 0.05). The median serum human chorionic gonadotropin (HCG) level was 3,222 mIU/mL and 2,838 mIU/mL in the sHIFU and control groups, respectively, which decreased and returned to normal within 30 days, and the differences were not significantly on comparing the blood HCG level in the two groups at 7, 15, and 30 days after HIFU (all P > 0.05). Decreased menstrual volume occurred in 85.71% of patients in the control group, which was higher than that in the sHIFU group (23.08%) (χ2 = 6.839, P < 0.001). During 2–8 years of follow-up, six pregnancies occurred in the sHIFU group without any recurrence of placenta increta, three pregnancies occurred in the control group, and one patient developed a repeat placenta increta. Conclusion Simple HIFU treatment is safe and effective for postpartum placenta increta and leaving the placenta in situ. It is a promising option for patients who wish to preserve their fertility and conceive.
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Affiliation(s)
- Xiaoping Guan
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Biomedical Engineering, Chongqing Medical University, Chongqing, China.,Department of Gynecology, Neijiang First People's Hospital, Neijiang, China
| | - Xiaoqin Huang
- Department of Gynecology, Neijiang First People's Hospital, Neijiang, China
| | - Min Ye
- Department of Gynecology, Neijiang First People's Hospital, Neijiang, China
| | - Guohua Huang
- Department of Gynecology, Suining Central Hospital, Suining, China
| | - Xiao Xiao
- Department of Gynecology, Chongqing Haifu Hospital, Chongqing, China
| | - Jinyun Chen
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Biomedical Engineering, Chongqing Medical University, Chongqing, China.,Department of Gynecology, Chongqing Haifu Hospital, Chongqing, China
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Huang J, Zhang X, Liu L, Duan S, Pei C, Zhao Y, Liu R, Wang W, Jian Y, Liu Y, Liu H, Wu X, Zhang W. Placenta Accreta Spectrum Outcomes Using Tourniquet and Forceps for Vascular Control. Front Med (Lausanne) 2021; 8:557678. [PMID: 34733857 PMCID: PMC8558214 DOI: 10.3389/fmed.2021.557678] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 09/21/2021] [Indexed: 11/13/2022] Open
Abstract
Objective: To evaluate the use of tourniquet and forceps to reduce bleeding during surgical treatment of severe placenta accreta spectrum (placenta increta and placenta percreta). Methods: A tourniquet was used in the lower part of the uterus during surgical treatment of severe placenta accreta spectrum. Severe placenta accreta spectrum was classified into two types according to the relative position of the placenta and tourniquet during surgery: upper-tourniquet type, in which the entire placenta was above the tourniquet, and lower-tourniquet type, in which part or all of the placenta was below the tourniquet. The surgical effects of the two types were retrospectively compared. We then added forceps to the lower-tourniquet group to achieve further bleeding reduction. Finally, the surgical effects of the two types were prospectively compared. Results: During the retrospective phase, patients in the lower-tourniquet group experienced more severe symptoms than did patients in the upper-tourniquet group, based on mean intraoperative blood loss (upper-tourniquet group 787.5 ml, lower-tourniquet group 1434.4 ml) intensive care unit admission rate (upper-tourniquet group 1.0%, lower-tourniquet group 33.3%), and length of hospital stay (upper-tourniquet group 10.2d, lower-tourniquet group 12.1d). During the prospective phase, after introduction of the revised surgical method involving forceps (in the lower-tourniquet group), the lower-tourniquet group exhibited improvements in the above indicators (intraoperative average blood loss 722.9 ml, intensive care unit admission rate 4.3%, hospital stays 9.0d). No increase in the rate of complications was observed. Conclusion: The relative positions of the placenta and tourniquet may influence the perioperative risk of severe placenta accreta spectrum. The method using a tourniquet (and forceps if necessary) can improve the surgical effect in cases of severe placenta accreta spectrum.
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Affiliation(s)
- Jingrui Huang
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Xiaowen Zhang
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Lijuan Liu
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Si Duan
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Chenlin Pei
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Yanhua Zhao
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Rong Liu
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Weinan Wang
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Yu Jian
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Yuelan Liu
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Hui Liu
- Department of Radiology, Xiangya Hospital Central South University, Changsha, China
| | - Xinhua Wu
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Weishe Zhang
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China.,Hunan Engineering Research Center of Early Life Development and Disease Prevention, Changsha, China
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He S, Xue M, Jiang J. Early versus late hysteroscopic resection after high-intensity focused ultrasound for retained placenta accreta. Int J Hyperthermia 2021; 38:257-262. [PMID: 33612042 DOI: 10.1080/02656736.2021.1887943] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Objective: To compare early and late hysteroscopic resection after high-intensity focused ultrasound (HIFU) for retained placenta accreta. Methods: This retrospective study included 63 women with retained placenta accreta who were treated with HIFU combined with hysteroscopic resection. They were divided into an early group (n = 40) and a late group (n = 23), depending on the time between the HIFU and the hysteroscopic resection. The number of sessions of hysteroscopy needed, adverse events, menstrual recovery, and reproductive outcomes were compared. Results: The mean largest diameter of the retained placenta accreta was 67.6 ± 14.0 mm and 71.6 ± 23.6 mm in each group (p = .47), respectively. In the early group, the first hysteroscopic procedure was done at a mean interval of 2.7 ± 1.4 days after HIFU ablation, while in the late group, the interval was 34.7 ± 15.0 days (p < .001). The rate of complete resection of placenta residue after one hysteroscopic procedure in the late group was 73.9% (17/23). This was significantly higher than in the early group, where the rate was 45% (p = .03). During the follow-up, there was no difference in menstrual recovery and pregnancy outcomes between the groups. Conclusion: This study was the first to compare the effects and safety of early and late hysteroscopic resection after HIFU for retained placenta accreta. Late hysteroscopic resection seems to increase the rate of complete resection of retained placenta accreta after one hysteroscopic procedure.
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Affiliation(s)
- Sili He
- Department of Obstetrics and Gynecology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Min Xue
- Department of Obstetrics and Gynecology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Jianfa Jiang
- Department of Obstetrics and Gynecology, The Third Xiangya Hospital of Central South University, Changsha, China
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Lin Z, Gong C, Huang Q, Zhang Z, Wang D, Yuan L, Wang X, An Q, Chen D, Liu S, Zou X, Setzen R, Yang B, Zhang L. A comparison of results following the treatment of placenta accreta and placenta increta using high-intensity focused ultrasound followed by hysteroscopic resection. Int J Hyperthermia 2021; 38:576-581. [PMID: 33827369 DOI: 10.1080/02656736.2021.1909149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
OBJECTIVE To compare the safety and efficacy of high-intensity focused ultrasound (HIFU) followed by hysteroscopic resection for different placenta accreta spectrum disorders. MATERIALS AND METHODS Thirty-four patients with placenta accreta, placenta increta, or placenta percreta were treated with USgHIFU from January 2016 to December 2019 and were retrospectively reviewed. The patients were classified into three categories according to the relationship between the trophoblastic villi and the myometrium, based on magnetic resonance imaging (MRI). Fifteen patients were classified as placenta accreta, 17 patients were classified as placenta increta, and 2 were classified as placenta percreta. All patients completed follow-up. Treatment efficacy and safety were evaluated. RESULTS No significant differences in baseline characteristics and results of HIFU ablation were observed between the patients with placenta accreta and those with placenta increta. The return of HCG levels to normal was longer in patients with placenta accreta compared with patients with placenta increta, while no significant difference was observed in the amount of intraoperative blood loss, the return of normal menstruation and the length of hospital stay. CONCLUSIONS HIFU treatment followed by hysteroscopic resection is safe and effective in the treatment of patients with placenta accreta and placenta increta.
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Affiliation(s)
- Zhenjiang Lin
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Biomedical Engineering, Chongqing Medical University, Chongqing, China
| | - Chunmei Gong
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Biomedical Engineering, Chongqing Medical University, Chongqing, China
| | - Qin Huang
- Department of Gynaecology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Zhendong Zhang
- Department of Gynaecology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Donghong Wang
- Department of Gynaecology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Li Yuan
- Department of Gynaecology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Xi Wang
- Department of Gynaecology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Qiang An
- Department of Gynaecology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Dayong Chen
- Department of Gynaecology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Song Liu
- Department of Gynaecology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Xiaofeng Zou
- Department of Gynaecology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Raymond Setzen
- Department of Obstetrics and Gynaecology, Chris Hani Baragwanath Academic Hospital, Johannesburg, South Africa
| | - Bing Yang
- Department of Gynaecology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Lian Zhang
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Biomedical Engineering, Chongqing Medical University, Chongqing, China
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Abd Elazeem HAS, Saad MM, Ahmed IA, Sayed EG, AlMahdy AM, Atef F, Elassall GM, Ashraf Salah M, Ali AK, Ragab EY, Shazly SA. High-intensity focused ultrasound in management of placenta accreta spectrum: A systematic review. Int J Gynaecol Obstet 2020; 151:325-332. [PMID: 32976627 DOI: 10.1002/ijgo.13391] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 07/07/2020] [Accepted: 09/21/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND High-intensity focused ultrasound (HIFU) is a non-invasive procedure that has been studied in the management of placenta accreta spectrum (PAS). OBJECTIVE To appraise HIFU in the management of PAS and highlight the restrictions on converting uterus-preserving studies into evidence-based practice. SEARCH STRATEGY A search on Scopus, Cochrane, PubMed and Web of Science was conducted from date of inception to January 2020. SELECTION CRITERIA Studies on using HIFU in the management of PAS were eligible. Review articles, conference papers, and case reports were excluded. DATA COLLECTION A standardized sheet was used to abstract data from eligible studies. CON-PAS registry was used to include studies on other conservative modalities. RESULTS Four studies were eligible (399 patients). Average residual placental volume was 61.74 cm3 (6.01-339 cm3 ). Treatment was successful in all patients. Normal menstruation recovered after 48.8 days (15-150 days). No major complications were encountered. Sixty-one studies were retrieved from the CON-PAS registry; uterine artery embolization (23 studies), balloon placement (15 studies), compression sutures (10 studies), placenta in situ (7 studies), and uterine resection (6 studies) were successful in 83.7%, 92.9%, 87.9%, 85.2%, and 79.3% of cases, respectively. CONCLUSIONS HIFU may fit certain clinical situations in the management of PAS. A global research strategy is recommended to incorporate conservative approaches within a comprehensive management protocol.
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Affiliation(s)
| | - Mahmoud M Saad
- Department of Obstetrics and Gynecology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Islam A Ahmed
- Department of Internal Medicine, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Esraa G Sayed
- Department of Obstetrics and Gynecology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - AlBatool M AlMahdy
- Department of Obstetrics and Gynecology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Fatma Atef
- Department of Obstetrics and Gynecology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Gena M Elassall
- Department of Obstetrics and Gynecology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Mohamed Ashraf Salah
- Department of Obstetrics and Gynecology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Ahmed K Ali
- Department of Surgery, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Esraa Y Ragab
- Department of Anesthesia, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Sherif A Shazly
- Department of Obstetrics and Gynecology, Faculty of Medicine, Assiut University, Assiut, Egypt
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Jiang J, Wang C, Xue M. High-intensity focused ultrasound versus uterine artery embolization for patients with retained placenta accreta. Eur J Obstet Gynecol Reprod Biol 2020; 252:82-86. [PMID: 32590166 DOI: 10.1016/j.ejogrb.2020.06.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 06/03/2020] [Accepted: 06/06/2020] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To compare the safety and clinical effectiveness of high-intensity focused ultrasound (HIFU) and uterine artery embolization (UAE) for retained placenta accreta. STUDY DESIGN A retrospective analysis was performed on women who underwent HIFU or UAE followed by hysteroscopic resection for retained placenta accreta from January 2015 to December 2019 at the Third Xiangya Hospital of Central South University. RESULTS A total of 63 and 31 patients who underwent HIFU and UAE followed by hysteroscopic resection, respectively, were analyzed. The baseline characteristics, including age, gravidity, parity, previous cesarean section rate, previous curettage rate, previous intrauterine adhesions rate, and delivery mode, were similar between the two groups. Vaginal bleeding was the major complaint in patients with retained placenta accreta. The number of hysteroscopy sessions, amount of intraoperative blood loss, and the length of hospital stays were also similar between the groups. No further hysterectomy was needed in either group. CONCLUSION Both HIFU and UAE combined with hysteroscopic resection seem to be safe and effective procedures in cases of retained placenta accreta.
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Affiliation(s)
- Jianfa Jiang
- Department of Obstetrics and Gynecology, The Third Xiangya Hospital of Central South University, Changsha, Hunan Province, China
| | - Chen Wang
- Department of Obstetrics and Gynecology, The Third Xiangya Hospital of Central South University, Changsha, Hunan Province, China
| | - Min Xue
- Department of Obstetrics and Gynecology, The Third Xiangya Hospital of Central South University, Changsha, Hunan Province, China.
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Xia H, Ke SC, Qian RR, Lin JG, Li Y, Zhang X. Comparison between abdominal ultrasound and nuclear magnetic resonance imaging detection of placenta accreta in the second and third trimester of pregnancy. Medicine (Baltimore) 2020; 99:e17908. [PMID: 31914010 PMCID: PMC6959867 DOI: 10.1097/md.0000000000017908] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
This study is to determine accuracy of abdominal ultrasound and nuclear magnetic resonance imaging (MRI) for placenta accreta in the second and third trimester of pregnancy and to define the most relevant features of abdominal ultrasound and MRI for placenta accreta prediction.Between September 2012 and September 2018, 245 high risk of placenta accreta in the second trimester of pregnancy were prenatal diagnosed by abdominal ultrasound and MRI and they were followed up until the end of pregnancy.Forty-six patients at the second trimester of pregnancy and 40 patients at the third trimester of pregnancy were confirmed as placenta accreta. For the second and third trimester of pregnancy, the sensitivity (Se), specificity (Sp), positive and negative predictive value (PPV and NPV) of abdominal ultrasound were 95.65% versus 97.50%, 91.78% versus 90.70%, 88% versus 83%, and 97% versus 99%, respectively, while the Se, Sp, PPV, and NPV of MRI were 89.13% versus 92.50%, 87.67% versus 8721%, 82% versus 77%, and 93% versus 96%, respectively. Five features having significant statistical differences between normal placentation women and placenta accreta patients in second or third trimester of pregnancy, including loss of the normal retroplacental clear space, thinning or disappearance of the myometrium, increased vascularization at the uterine serosa-bladder wall interface, and vascularization perpendicular to the uterine wall on abdominal ultrasound, and uterine bulging and dark intraplacental bands on MRI.Abdominal ultrasound and MRI for placenta accreta in the second and third trimester of pregnancy could provide meaningful imaging evidences.
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Affiliation(s)
- Hui Xia
- Department of Ultrasonography
| | | | | | | | - Yang Li
- Department of Imaging, RuiAn People's Hospital (The Third Affiliated Hospital of Wenzhou Medical University), City of Ruian, Province of Zhejiang, China
| | - Xia Zhang
- Department of Imaging, RuiAn People's Hospital (The Third Affiliated Hospital of Wenzhou Medical University), City of Ruian, Province of Zhejiang, China
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Caloone J, Barrere V, Sanchez M, Cambronero S, Huissoud C, Melodelima D. High-Intensity Focused Ultrasound Using a Toroidal Transducer as an Adjuvant Treatment for Placenta Accreta: A Preliminary Ex Vivo Study. Ing Rech Biomed 2019. [DOI: 10.1016/j.irbm.2019.05.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Collins SL, Alemdar B, van Beekhuizen HJ, Bertholdt C, Braun T, Calda P, Delorme P, Duvekot JJ, Gronbeck L, Kayem G, Langhoff-Roos J, Marcellin L, Martinelli P, Morel O, Mhallem M, Morlando M, Noergaard LN, Nonnenmacher A, Pateisky P, Petit P, Rijken MJ, Ropacka-Lesiak M, Schlembach D, Sentilhes L, Stefanovic V, Strindfors G, Tutschek B, Vangen S, Weichert A, Weizsäcker K, Chantraine F. Evidence-based guidelines for the management of abnormally invasive placenta: recommendations from the International Society for Abnormally Invasive Placenta. Am J Obstet Gynecol 2019; 220:511-526. [PMID: 30849356 DOI: 10.1016/j.ajog.2019.02.054] [Citation(s) in RCA: 170] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 02/13/2019] [Accepted: 02/27/2019] [Indexed: 11/28/2022]
Abstract
The worldwide incidence of abnormally invasive placenta is rapidly rising, following the trend of increasing cesarean delivery. It is a heterogeneous condition and has a high maternal morbidity and mortality rate, presenting specific intrapartum challenges. Its rarity makes developing individual expertise difficult for the majority of clinicians. The International Society for Abnormally Invasive Placenta aims to improve clinicians' understanding and skills in managing this difficult condition. By pooling knowledge, experience, and expertise gained within a variety of different healthcare systems, the Society seeks to improve the outcomes for women with abnormally invasive placenta globally. The recommendations presented herewith were reached using a modified Delphi technique and are based on the best available evidence. The evidence base for each is presented using a formal grading system. The topics chosen address the most pertinent questions regarding intrapartum management of abnormally invasive placenta with respect to clinically relevant outcomes, including the following: definition of a center of excellence; requirement for antenatal hospitalization; antenatal optimization of hemoglobin; gestational age for delivery; antenatal corticosteroid administration; use of preoperative cystoscopy, ureteric stents, and prophylactic pelvic arterial balloon catheters; maternal position for surgery; type of skin incision; position of the uterine incision; use of interoperative ultrasound; prophylactic administration of oxytocin; optimal method for intraoperative diagnosis; use of expectant management; adjuvant therapies for expectant management; use of local surgical resection; type of hysterectomy; use of delayed hysterectomy; intraoperative measures to treat life-threatening hemorrhage; and fertility after conservative management.
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Affiliation(s)
- Sally L Collins
- Nuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, UK; The Fetal Medicine Unit, John Radcliffe Hospital, Oxford, UK.
| | - Bahrin Alemdar
- Department of Obstetrics and Gynecology, South General Hospital, Stockholm, Sweden
| | | | - Charline Bertholdt
- Centre Hospitalier Régional Universitaire de Nancy, Université de Lorraine, France
| | - Thorsten Braun
- Departments of Obstetrics and Division of Experimental Obstetrics, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Campus Virchow-Klinikum and Campus Charité Mitte, Berlin, Germany
| | - Pavel Calda
- Department of Obstetrics and Gynecology, General Faculty Hospital, Charles University, Prague, Czech Republic
| | - Pierre Delorme
- Port-Royal Maternity Unit, Cochin Hospital, Paris-Descartes University, DHU Risk and Pregnancy, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Johannes J Duvekot
- Department of Obstetrics and Gynecology, Erasmus Medical Center Rotterdam, Rotterdam, Netherlands
| | - Lene Gronbeck
- Department of Obstetrics, Rigshospitalet, University of Copenhagen, Denmark
| | - Gilles Kayem
- Department of Obstetrics and Gynecology, Hôpital Trousseau, Assistance Publique des Hôpitaux de Paris, Sorbonne University, Paris, France
| | - Jens Langhoff-Roos
- Department of Obstetrics, Rigshospitalet, University of Copenhagen, Denmark
| | - Louis Marcellin
- Department of Gynecology Obstetrics II and Reproductive Medicine, Hôpitaux Universitaires Paris Centre, Hôpital Cochin, APHP; Sorbonne Paris Cité, Université Paris Descartes, Faculté de Médecine, Paris, France
| | - Pasquale Martinelli
- Department of Neuroscience, Reproductive Sciences and Dentistry, University of Naples Federico II, Naples, Italy
| | - Olivier Morel
- Centre Hospitalier Régional Universitaire de Nancy, Université de Lorraine, France
| | - Mina Mhallem
- Department of Obstetrics, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Maddalena Morlando
- Department of Neuroscience, Reproductive Sciences and Dentistry, University of Naples Federico II, Naples, Italy; Department of Women, Children and of General and Specialized Surgery, University "Luigi Vanvitelli", Naples, Italy
| | - Lone N Noergaard
- Department of Obstetrics, Rigshospitalet, University of Copenhagen, Denmark
| | - Andreas Nonnenmacher
- Departments of Obstetrics and Division of Experimental Obstetrics, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Campus Virchow-Klinikum and Campus Charité Mitte, Berlin, Germany
| | - Petra Pateisky
- Department of Obstetrics and Gynecology, Division of Obstetrics and Feto-Maternal Medicine, Medical University of Vienna, Vienna, Austria
| | - Philippe Petit
- Department of Obstetrics and Gynecology, CHR Citadelle, University of Liege, Liege, Belgium
| | - Marcus J Rijken
- Vrouw & Baby, University Medical Centre Utrecht, Utrecht University, Utrecht, Netherlands
| | - Mariola Ropacka-Lesiak
- Department of Perinatology and Gynecology, University of Medical Sciences, Poznan, Poland
| | - Dietmar Schlembach
- Vivantes Network for Health, Clinicum Neukoelln, Clinic for Obstetric Medicine, Berlin, Germany
| | - Loïc Sentilhes
- Department of Obstetrics and Gynecology, Hôpital Pellegrin, CHU de Bordeaux, Bordeaux, France
| | - Vedran Stefanovic
- Department of Obstetrics and Gynecology, Fetomaternal Medical Center, Helsinki University Hospital and University of Helsinki, Finland
| | - Gita Strindfors
- Department of Obstetrics and Gynecology, South General Hospital, Stockholm, Sweden
| | - Boris Tutschek
- Prenatal Zurich, Zürich, Switzerland; Heinrich Heine University, Düsseldorf, Germany
| | - Siri Vangen
- Division of Obstetrics and Gynaecology, Norwegian National Advisory Unit on Women's Health, Oslo University Hospital, Rikshospitalet and Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Alexander Weichert
- Departments of Obstetrics and Division of Experimental Obstetrics, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Campus Virchow-Klinikum and Campus Charité Mitte, Berlin, Germany
| | - Katharina Weizsäcker
- Departments of Obstetrics and Division of Experimental Obstetrics, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Campus Virchow-Klinikum and Campus Charité Mitte, Berlin, Germany
| | - Frederic Chantraine
- Department of Obstetrics and Gynecology, CHR Citadelle, University of Liege, Liege, Belgium
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Abstract
The purpose of this review was to assist obstetricians and gynecologists in considering the most appropriate conservative treatment option to manage women with placenta accreta spectrum according to their individual need and local expertise of the heath care team. The issue is challenging, as the quality of evidence with regard to efficacy is poor, and is mainly based on retrospective studies with limited sample size.
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Jiang X, Tang Q, Yang B, Ye F, Cai L, Wang X, Luo X, Bu H. High-intensity focused ultrasound combined procedures treatment of retained placenta accreta with marked vascularity after abortion or delivery. Int J Hyperthermia 2019; 36:421-427. [PMID: 30892148 DOI: 10.1080/02656736.2019.1581279] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVE To evaluate the safety and feasibility of combined procedures: HIFU combined with systemic MTX followed by ultrasound-guided curettage or hysteroscopic resection while treating placenta accreta (PA). METHOD This study included 21 patients diagnosed with retained PA with marked vascularity after abortion or delivery from July 2015 to December 2017. Patients with high serum β-hCG level (≥100 mIU/mL) received systemic MTX + HIFU treatment for 3 days and the ones with low β-hCG level (<100 mIU/mL) only received USgHIFU treatment for 3 days before ultrasound-guided curettage or hysteroscopic resection. All patients had completed follow-up data. The safety and feasibility of the treatment were evaluated retrospectively. RESULT Sixteen patients received systemic 100 mg MTX without myelosuppression. All patients received three days of HIFU ablation therapy; the median of HIFU treatment time was 60 minutes. Ultrasound-guided curettage and ovum forceps were used to extract planted placental tissue in 5 patients with one week after birth or after abortion. Sixteen patients received a hysteroscopic operation after the HIFU treatment. The median of intraoperative blood loss was 30 ml. Twenty patients had recovered normal menstruation on average 32 days (range 14-60) after the operation. CONCLUSION Based on the results of this study, with a relatively small number of patients, it seems that three-days' therapy of HIFU ± systemic MTX followed by ultrasound-guided curettage or hysteroscopic resection, is a safe and feasible treatment for retained PA with marked vascularity after abortion or delivery.
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Affiliation(s)
- Xuefeng Jiang
- a Department of Obstetrics and Gynecology , the First Affiliated Hospital, Jinan University , Guangzhou , China.,b Department of Pathology , West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University , Chengdu , China
| | - QiongLan Tang
- c Department of Pathology , Sun Yat-sen Memorial Hospital, Sun Yat-sen University , Guangzhou , China
| | - Binjiang Yang
- a Department of Obstetrics and Gynecology , the First Affiliated Hospital, Jinan University , Guangzhou , China
| | - Fei Ye
- a Department of Obstetrics and Gynecology , the First Affiliated Hospital, Jinan University , Guangzhou , China
| | - Lei Cai
- a Department of Obstetrics and Gynecology , the First Affiliated Hospital, Jinan University , Guangzhou , China
| | - Xiaoyu Wang
- a Department of Obstetrics and Gynecology , the First Affiliated Hospital, Jinan University , Guangzhou , China
| | - Xin Luo
- a Department of Obstetrics and Gynecology , the First Affiliated Hospital, Jinan University , Guangzhou , China
| | - Hong Bu
- b Department of Pathology , West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University , Chengdu , China
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Jauniaux E, Alfirevic Z, Bhide AG, Belfort MA, Burton GJ, Collins SL, Dornan S, Jurkovic D, Kayem G, Kingdom J, Silver R, Sentilhes L. Placenta Praevia and Placenta Accreta: Diagnosis and Management: Green-top Guideline No. 27a. BJOG 2018; 126:e1-e48. [PMID: 30260097 DOI: 10.1111/1471-0528.15306] [Citation(s) in RCA: 223] [Impact Index Per Article: 37.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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15
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Zhao L, Deng Y, Wei Q, Chen J, Zhao C. Comparison of ultrasound-guided high-intensity focused ultrasound ablation and surgery for abdominal wall endometriosis. Int J Hyperthermia 2018; 35:528-533. [PMID: 30208746 DOI: 10.1080/02656736.2018.1511836] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Surgery constitutes the standard approach for abdominal wall endometriosis (AWE), but is invasive. High-intensity focused ultrasound (HIFU) ablation is effective and safe for the treatment of AWE, but no study has compared HIFU and surgery. OBJECTIVE To report our experience about the benefits and adverse events of surgery compared to HIFU for the treatment of AWE. METHODS This was a retrospective study of 54 consecutive Chinese women with AWE after cesarean section treated at the First Affiliated Hospital of Chongqing Medical University (China) between January 2012 and December 2014. The patients underwent surgery (n = 29) or HIFU (n = 25). The technical success rate, adverse events, and recurrence were assessed. RESULTS The technical success rate was 100% in both groups. The complete remission rate was 92.0% (23/25) in the HIFU group, and 100% (29/29) in the surgery group. Numeric rating scale (NRS) scores after HIFU were significantly improved from 6.9 to 0.3.During the median follow-up period of 32 months (range, 19-46 months), the durations of pain relief were 29.7 ± 12.6 months and 25.0 ± 13.5 months in the surgery and HIFU groups, respectively (p = .337). Three patients (10.7%) experienced pain recurrence in the surgery group, and two (8.0%) in the HIFU group. Major adverse events occurred in four (13.8%) and one (4.0%) patients in the surgery and HIFU groups, respectively (p > .05). CONCLUSIONS HIFU appears to be beneficial for the treatment of AWE, and may reduce adverse events. Compared with surgery, HIFU does not induce blood loss or tissue defects.
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Affiliation(s)
- Ling Zhao
- a Department of Obstetrics and Gynecology , 1st Affiliated Hospital of Chongqing Medical University , Chongqing , China
| | - Youlin Deng
- a Department of Obstetrics and Gynecology , 1st Affiliated Hospital of Chongqing Medical University , Chongqing , China
| | - Qing Wei
- b College of Biomedical Engineering , Chongqing Medical University , Chongqing , China
| | - Jinyun Chen
- b College of Biomedical Engineering , Chongqing Medical University , Chongqing , China.,c HIFU Center for Tumor Therapy , 1st Affiliated Hospital of Chongqing Medical University , Chongqing , China
| | - Chunquan Zhao
- a Department of Obstetrics and Gynecology , 1st Affiliated Hospital of Chongqing Medical University , Chongqing , China
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16
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Shaw CJ, Rivens I, Civale J, Botting KJ, Ter Haar G, Giussani DA, Lees CC. Trans-abdominal in vivo placental vessel occlusion using High Intensity Focused Ultrasound. Sci Rep 2018; 8:13631. [PMID: 30206278 PMCID: PMC6134117 DOI: 10.1038/s41598-018-31914-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 06/28/2018] [Indexed: 12/16/2022] Open
Abstract
Pre-clinically, High Intensity Focused Ultrasound (HIFU) has been shown to safely and effectively occlude placental blood vessels in the acute setting, when applied through the uterus. However, further development of the technique to overcome the technical challenges of targeting and occluding blood vessels through intact skin remains essential to translation into human studies. So too does the assessment of fetal wellbeing following this procedure, and demonstration of the persistence of vascular occlusion. At 115 ± 10 d gestational age (term~147 days) 12 pregnant sheep were exposed to HIFU (n = 6), or to a sham (n = 6) therapy through intact abdominal skin (1.66 MHz, 5 s duration, in situ ISPTA 1.3-4.4 kW.cm-2). Treatment success was defined as undetectable colour Doppler signal in the target placental vessel following HIFU exposures. Pregnancies were monitored for 21 days using diagnostic ultrasound from one day before HIFU exposure until term, when post-mortem examination was performed. Placental vessels were examined histologically for evidence of persistent vascular occlusion. HIFU occluded 31/34 (91%) of placental vessels targeted, with persistent vascular occlusion evident on histological examination 20 days after treatment. The mean diameter of occluded vessels was 1.4 mm (range 0.3-3.3 mm). All pregnancies survived until post mortem without evidence of significant maternal or fetal iatrogenic harm, preterm labour, maternal or fetal haemorrhage or infection. Three of six ewes exposed to HIFU experienced abdominal skin burns, which healed without intervention within 21 days. Mean fetal weight, fetal growth velocity and other measures of fetal biometry were not affected by exposure to HIFU. Fetal Doppler studies indicated a transient increase in the umbilical artery pulsatility index (PI) and a decrease in middle cerebral artery PI as a result of general anaesthesia, which was not different between sham and treatment groups. We report the first successful application of fully non-invasive HIFU for occlusion of placental blood flow in a pregnant sheep model, with a low risk of significant complications. This proof of concept study demonstrates the potential of this technique for clinical translation.
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Affiliation(s)
- Caroline J Shaw
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, CB2 3EG, UK
- Institute of Reproductive and Developmental Biology, Imperial College London, London, W12 0HS, UK
| | - Ian Rivens
- Joint Department of Physics, Institute of Cancer Research, Sutton, London, SM2 5NG, UK
| | - John Civale
- Joint Department of Physics, Institute of Cancer Research, Sutton, London, SM2 5NG, UK
| | - Kimberley J Botting
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, CB2 3EG, UK
- Cardiovascular Strategic Research Initiative, University of Cambridge, Cambridge, UK
| | - Gail Ter Haar
- Joint Department of Physics, Institute of Cancer Research, Sutton, London, SM2 5NG, UK
| | - Dino A Giussani
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, CB2 3EG, UK
- Cardiovascular Strategic Research Initiative, University of Cambridge, Cambridge, UK
| | - Christoph C Lees
- Institute of Reproductive and Developmental Biology, Imperial College London, London, W12 0HS, UK.
- Department of Obstetrics and Gynaecology, University Hospitals Leuven, 3000, Leuven, Belgium.
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Sentilhes L, Kayem G, Chandraharan E, Palacios-Jaraquemada J, Jauniaux E. FIGO consensus guidelines on placenta accreta spectrum disorders: Conservative management,. Int J Gynaecol Obstet 2018; 140:291-298. [DOI: 10.1002/ijgo.12410] [Citation(s) in RCA: 137] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Loïc Sentilhes
- Department of Obstetrics and Gynecology; Bordeaux University Hospital; Bordeaux France
| | - Gilles Kayem
- Department of Obstetrics and Gynecology; Trousseau Hospital AP-HP; Paris France
| | - Edwin Chandraharan
- Department of Obstetrics and Gynecology; St George's University Hospitals NHS Foundation Trust; London UK
| | | | - Eric Jauniaux
- EGA Institute for Women's Health; Faculty of Population Health Sciences; University College London; London UK
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18
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Caloone J, Huissoud C, Kocot A, Vincenot J, Dehay C, Giroud P, Misery P, Allias F, Rudigoz RC, Melodelima D. Non-invasive high-intensity focused ultrasound treatment of the placenta: a preliminary in-vivo study using a simian model. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2017; 50:635-641. [PMID: 27804180 DOI: 10.1002/uog.17350] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2016] [Revised: 10/23/2016] [Accepted: 10/24/2016] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To demonstrate the feasibility and efficacy of high-intensity focused ultrasound (HIFU) for the non-invasive creation of placental lesions in a simian model. METHODS Eight pregnant monkeys were exposed to HIFU treatment after anesthesia, using a toroidal HIFU 2.5-MHz transducer with an integrated ultrasound imaging probe. Lesions on the placental tissue were created non-invasively by placing the HIFU probe on the skin surface. Fetal and maternal parameters, such as maternal heart rate, fetal heart rate and subcutaneous and intra-amniotic fluid temperature, were recorded during HIFU exposure. Cesarean section was performed immediately after the procedure to extract the placenta and examine the fetus and the maternal abdominal cavity. Placental HIFU lesions were assessed by ultrasound, gross pathology and histology. RESULTS The mean gestational age of the monkeys was 72 ± 4 days. In total, 13 HIFU procedures were performed. The acoustic power and exposure time were increased progressively. This gradual increase in total energy delivered was used to determine a set of parameters to create reproducible lesions in the placenta without complications. Five placental lesions were observed with average diameters of 6.4 ± 0.5 mm and 7.8 ± 0.7 mm and an average depth of 3.8 ± 1.5 mm. Ultrasound examination of the placentae revealed hyperechoic regions that correlated well with macroscopic analysis of the HIFU lesions. Necrosis of placental tissue exposed to HIFU was confirmed with macroscopic and microscopic analysis. There was no significant variation in maternal and fetal parameters during HIFU exposure. CONCLUSIONS This study demonstrates the feasibility of HIFU applied non-invasively to the placental unit in an in-vivo pregnant monkey model. The technique is safe in the immediate short term and is potentially translatable to human pregnancy. Copyright © 2016 ISUOG. Published by John Wiley & Sons Ltd.
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Affiliation(s)
- J Caloone
- Inserm, U1032, Laboratory of Therapeutic Applications of Ultrasound, Lyon, France
- Université de Lyon, Lyon, France
- Department of Obstetrics and Gynecology, Croix Rousse University Hospital, Lyon, France
| | - C Huissoud
- Department of Obstetrics and Gynecology, Croix Rousse University Hospital, Lyon, France
- Stem Cell and Brain Research Institute, Institut National de la Sante et de la Recherche Médicale U846, Bron, France
| | - A Kocot
- Inserm, U1032, Laboratory of Therapeutic Applications of Ultrasound, Lyon, France
- Université de Lyon, Lyon, France
| | - J Vincenot
- Inserm, U1032, Laboratory of Therapeutic Applications of Ultrasound, Lyon, France
- Université de Lyon, Lyon, France
| | - C Dehay
- Stem Cell and Brain Research Institute, Institut National de la Sante et de la Recherche Médicale U846, Bron, France
| | - P Giroud
- Stem Cell and Brain Research Institute, Institut National de la Sante et de la Recherche Médicale U846, Bron, France
| | - P Misery
- Stem Cell and Brain Research Institute, Institut National de la Sante et de la Recherche Médicale U846, Bron, France
| | - F Allias
- Université de Lyon, Lyon, France
- Department of Pathology, Croix Rousse University Hospital, Lyon, France
| | - R C Rudigoz
- Department of Obstetrics and Gynecology, Croix Rousse University Hospital, Lyon, France
| | - D Melodelima
- Inserm, U1032, Laboratory of Therapeutic Applications of Ultrasound, Lyon, France
- Université de Lyon, Lyon, France
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19
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Ye M, Yin Z, Xue M, Deng X. High-intensity focused ultrasound combined with hysteroscopic resection for the treatment of placenta accreta. BJOG 2017; 124 Suppl 3:71-77. [PMID: 28856861 DOI: 10.1111/1471-0528.14743] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/12/2017] [Indexed: 12/29/2022]
Affiliation(s)
- M Ye
- Department of Obstetrics and Gynaecology; The Third Xiangya Hospital of Central South University; Changsha Hunan Province China
| | - Z Yin
- Department of Obstetrics and Gynaecology; The Third Xiangya Hospital of Central South University; Changsha Hunan Province China
| | - M Xue
- Department of Obstetrics and Gynaecology; The Third Xiangya Hospital of Central South University; Changsha Hunan Province China
| | - X Deng
- Department of Obstetrics and Gynaecology; The Third Xiangya Hospital of Central South University; Changsha Hunan Province China
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