Partial amniotic carbon dioxide insufflation (PACI) facilitates fetoscopic interventions in complicated monochorionic twin pregnancies

Kohl, Thomas; Tchatcheva, K.; Berg, Christoph; Geipel, A.; Vondel, P. Van de; Gembruch, Ulrich

doi:10.1007/s00464-006-9183-7

Cited by 13 publications

(15 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the previous proposed paper, [9] the tracking performance were less than 90%. Because recently we find the previous simulation stage and motor would cause great vibration, in this experiment, a newly developed stage and motor are adopted.…”

Section: Methodsmentioning

confidence: 99%

“…Additionally, partial amniotic carbon dioxide insufflation, as a treatment method, causes specular highlights in the endoscopic images, [9] and so can be used to overcome some visual limitations. Therefore, in the study, we apply an algorithm to address part of these endoscopic images defects, like floating particles and blurring.…”

Section: Characteristics Of Endoscopic Imagesmentioning

confidence: 99%

See 1 more Smart Citation

Automatic Tracking Algorithm in Coaxial Near-Infrared Laser Ablation Endoscope for Fetus Surgery

Yamanaka

Masamune

2014

International Journal of Optomechatronics

View full text Add to dashboard Cite

This article reports a stable vessel object tracking method for the treatment of twin-to-twin transfusion syndrome based on our previous 2 DOF endoscope. During the treatment of laser coagulation, it is necessary to focus on the exact position of the target object, however it moves by the mother's respiratory motion and still remains a challenge to obtain and track the position precisely. In this article, an algorithm which uses features from accelerated segment test (FAST) to extract the features and optical flow as the object tracking method, is proposed to deal with above problem. Further, we experimentally simulate the movement due to the mother's respiration, and the results of position errors and similarity verify the effectiveness of the proposed tracking algorithm for laser ablation endoscopy in-vitro and under water considering two influential factors. At average, the errors are about 10 pixels and the similarity over 0.92 are obtained in the experiments.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Characteristics Of Endoscopic Imagesmentioning

confidence: 99%

Automatic Tracking Algorithm in Coaxial Near-Infrared Laser Ablation Endoscope for Fetus Surgery

Yamanaka

Masamune

2014

International Journal of Optomechatronics

View full text Add to dashboard Cite

show abstract

“…Complications are peritoneal irritation by amniotic fluid leakage through the uterine entry point, iatrogenic PPROM (7% within 1 week, 28% before 34 weeks), placental abruption (1%), as well as infection and hemorrhage in rare cases [27,60]. An earlier drainage or stained liquid may hamper visualization, as well as an unfavorable placental location [25,67]. For patients with anterior placentas, special techniques and instruments have been designed.…”

Section: Twin-twin-transfusion Syndromementioning

confidence: 99%

The use of endoscopy in fetal medicine

Beck¹,

Pexsters²,

Gucciardo³

et al. 2010

Gynecol Surg

View full text Add to dashboard Cite

We aimed to review the state of affairs in the field of embryo-fetoscopy as well as its instrumental requirements. Today, endoscopic procedures of limited complexity are easily possible within the amniotic cavity. Embryoscopy is typically done for diagnostic purposes, such as the demonstration of external anomalies very early in pregnancy and/or obtaining embryonic tissues in recurrent miscarriages. Fetoscopy is the direct visualization of the amniotic cavity from the second trimester onwards. Its principal indications are complications of monochorionic twinning and severe congenital diaphragmatic hernia. There is level I evidence that fetoscopic laser surgery for twintwin-transfusion syndrome is superior over amniodrainage. Fetoscopic endoluminal tracheal occlusion is done for severe diaphragmatic hernia. Whether tracheal occlusion yields better outcomes than expectant management during pregnancies is currently being investigated in a randomized trial. There are a number of less common procedures discussed as well. Overall, maternal risks of embryofetoscopy are minimal. The most frequent complication is rupture of the membranes and as a consequence preterm delivery. Fetal surgery seems safe and has, therefore, become a clinical reality. Although the stage of technical experimentation is over, most interventions remain investigational. Inclusion of patients into trials whenever possible should be encouraged, rather than building up casuistic experience.

show abstract

“…16 However, centres that have performed very complex interventions using CO 2 for placental surgery did not report fetal adverse effects. [17][18][19] …”

Section: Distension Mediummentioning

confidence: 99%

Instrumental requirements for minimal invasive fetal surgery

Klaritsch

Albert

Mieghem

et al. 2008

BJOG

View full text Add to dashboard Cite

Minimal invasive intrauterine interventions have gained their place in fetal medicine. Interventions on the placenta, umbilical cord, fetal membranes or on the fetus require special endoscopes with their respective sheaths, cannulas and additional instruments. Instruments for fetal therapy are purpose designed for the procedure of interest and most gynaecologists are therefore not familiar with them. We review the currently available instrumentation used during operations for complicated monochorionic multiple pregnancies, congenital diaphragmatic hernia, amniotic band syndrome, urinary tract obstruction and hydrothorax.

show abstract

Partial amniotic carbon dioxide insufflation (PACI) facilitates fetoscopic interventions in complicated monochorionic twin pregnancies

Cited by 13 publications

References 5 publications

Automatic Tracking Algorithm in Coaxial Near-Infrared Laser Ablation Endoscope for Fetus Surgery

Automatic Tracking Algorithm in Coaxial Near-Infrared Laser Ablation Endoscope for Fetus Surgery

The use of endoscopy in fetal medicine

Instrumental requirements for minimal invasive fetal surgery

Contact Info

Product

Resources

About