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Joanna Płużańska, Kinga Jaguszewska, Jolanta Binikowska, Adam Oleś, Maciej Łukaszewski and Maria Respondek-Liberska

Abstract

We present an extraordinary case of congenital enlargement of the right atrium diagnosed at 31 weeks of gestation. This case emphasizes the fact that timing of the detection of this particular cardiac malformation is of capital importance to tract the optimal treatment strategy in order to monitor further progression (in this case accompanying thrombosis) and prevent complications.

Open access

Aleksandra Świercz, Sylwia Lewandowska, Krzysztof Szaflik, Adam Oleś, Anna Piaseczna-Piotrowska and Maria Respondek Liberska

Abstract

Shunt implantation in utero being a life-saving procedure, may be connected with a wide range of complications. One of them is catheter dislocation, a side effect which may impair the state of the fetus and child. We present a case of a boy with Congenital Adenomatoid Lung Malformation (CALM) type II. Invasive prenatal therapy, complicated by shunt migration did not influence our patient’s health. Moreover, the abnormally located shunt stayed within the child’s chest up to the age of 6 years. No symptoms linked to foreign body presence were observed. Although similar cases were published, we report a situation, in which the catheter was left in the patient’s body for 6 years, for the first time.

Open access

Maria Respondek-Liberska, Maciej Łukaszewski, Adam Oleś, Michał Podgórski, Piotr Grzelak and Maciej Słodki

Abstract

Introduction: Fetal echocardiography is a method of choice for diagnosing cardiovascular anomalies prenatally. However, in the majority of cases, the complexity of a defect creates a diagnostic challenge. Moreover, postnatal validation of sonographic findings rarely can be obtained. Nevertheless, the feedback is vital for improving diagnostic capabilities. Thus, the aim of this research was to compare results of prenatal echocardiography with postnatal angio-CT in patients with anomalies of great vessels. Material and methods: We retrospectively compared results of prenatal echocardiography and postnatal angio-CT in 10 patients with selected anomalies of the aortic arch. This was a qualitative analysis, thus discrepancies in recognized anomalies were compared between these two modalities. Results: In 8/10 patient diagnoses were fully consistent. Nevertheless, the tiny caliber of vessels created a diagnostic challenge (e.x. to differentiate the hypoplastic aortic arch from the aortic arch interruption). In the remaining case, the discrepancy was due to a problem with complete visualization of all branches of the aortic arch in prenatal ultrasound. Conclusions: Fetal echocardiography in tertiary center was a reliable method for assessment of great vessels anomalies. However, critically narrow vessels remain a diagnostic challenge and neonatal angio-CT seems to be the method of choice in cases of diagnostic doubts.

Open access

Adam Maciejewski, Piotr Jędrzejewski, Cezary Szymczyk, Janusz Wierzgoń, Mirosław Dobrut, Ryszard Szumniak, Maciej Grajek, Łukasz Krakowczyk, Stanisław Półtorak, Rafał Ulczok and Krzysztof Oleś

The Use of Double Independent Free Flaps for Tissue Reconstruction After Extensive Head and Neck Tumors Resection

Malignant tumors of head and neck regions usually need wide radical resections and may cause significant functional and aesthetic deficits. When a surgeon has to deal with extensive 3-D defect in lower or middle face region, double or multiple free flaps can be used.

The aim of the study was to present own methods modifications and results of double free flaps techniques in patients with extensive defects of head and neck region. The authors present quality of life evaluation related to different flaps reconstructions.

Material and methods. Clinical material consists of 33 patients with locally advanced cancer of lower or middle face region, who underwent surgical treatment in Departmant of Surgical and Reconstructive Surgery, Cancer Center Maria Skłodowska-Curie Instytute, Gliwice, Poland. In all patients double free flaps were chosen.

Results. Whole group good functional and aesthetic results have been achieved. The QOL analysis show that the use of double flap in middle of lower face reconstruction gives generally very good results.

Conclusions. The use of double free flaps after extensive resections of head and neck tumors is an efficient solution. The above-mentioned technique enables to reconstruct several different anatomical structures, restore optimal functioning, and assure a satisfactory psychosocial effect.

Open access

Adam Wolniakowski, Andrej Gams, Lilita Kiforenko, Aljaž Kramberger, Dimitrios Chrysostomou, Ole Madsen, Konstantsin Miatliuk, Henrik Gordon Petersen, Frederik Hagelskjær, Anders Glent Buch, Aleš Ude and Norbert Krüger

Abstract

The gripper finger design is a recurring problem in many robotic grasping platforms used in industry. The task of switching the gripper configuration to accommodate for a new batch of objects typically requires engineering expertise, and is a lengthy and costly iterative trial-and-error process. One of the open challenges is the need for the gripper to compensate for uncertainties inherent to the workcell, e.g. due to errors in calibration, inaccurate pose estimation from the vision system, or object deformation. In this paper, we present an analysis of gripper uncertainty compensating capabilities in a sample industrial object grasping scenario for a finger that was designed using an automated simulation-based geometry optimization method (Wolniakowski et al., 2013, 2015). We test the developed gripper with a set of grasps subjected to structured perturbation in a simulation environment and in the real-world setting. We provide a comparison of the data obtained by using both of these approaches. We argue that the strong correspondence observed in results validates the use of dynamic simulation for the gripper finger design and optimization.