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    Tytuł:
    Ultrasonic method for relative changes of intima-media thickness measurements in common carotid artery
    Autorzy:
    Trawiński, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/331653.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Akustyczne
    Tematy:
    carotid artery
    medicine
    ultrasound measurement
    Opis:
    This paper presents results of examinations of the intima-media thickness (IMT) in human common carotid arteries. Ultrasonic examinations were carried out on healthy volunteers with the use of the apparatus Vascular Echo Doppler (VED), designed in IFTR-PAS to measure the elasticity of arteries. Application of the PDA-14 PC-card (Signatec) allowed for the acquisition of ultrasonic RF signal from the output of the apparatus VED and for further analysis of dynamic changes of the IMT during a heart cycle. Changing of the IMT in time as a difference between the instantaneous position of the two tracking slopes of RF echoes was obtained. For this purpose the zero-crossing method, for tracking phase changes of two characteristic rising slopes of the RF ultrasonic echo, was used.
    Źródło:
    Hydroacoustics; 2008, 11; 411-418
    1642-1817
    Pojawia się w:
    Hydroacoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Carotid access in Transcatheter Aortic Valve Implantation – an alternative to the gold standard. A single-center experience
    Autorzy:
    Stańska, Aleksandra
    Wierzbowska, Aleksandra
    Targoński, Radosław
    Karolak, Wojciech
    Mickiewicz, Agnieszka
    Jaguszewski, Miłosz
    Jagielak, Dariusz
    Powiązania:
    https://bibliotekanauki.pl/articles/895733.pdf
    Data publikacji:
    2020-01-09
    Wydawca:
    Gdański Uniwersytet Medyczny
    Tematy:
    transcatheter aortic valve implantation
    aortic stenosis
    carotid artery
    elderly
    Opis:
    Background: Transfemoral access is regarded as the TAVI gold standard for the transcatheter aortic valve implantation (TAVI) procedure. However, other options for vascular access have developed in the last few years. Access via the carotid artery is one such alternative. Materials and methods: The study included 9 elderly patients who underwent transcarotid TAVI procedure at the Cardiac and Vascular Surgery Department of the Medical University of Gdańsk. Procedures were performed by a local Heart Team in a hybrid operating room under general anesthesia. Data was collected before the implantation and at discharge. Results: The mean patients’ age was 81 years of age (64-88) and the mean logistic EuroSCORE was 10.8 (7-16). Implantations were performed with 100% device success rate. Intra-operative valve-in-valve procedure was performed in one patient; there were no access-related and valve-related complications during the surgery. Post-procedural complications included minor bleeding, hematoma and pneumothorax. Echocardiographic parameters were significantly improving after the procedure. The mean hospital stay was 5 days (2-7 days). Conclusions: Transcatheter aortic valve implantation via the carotid artery appears to be safe and effective alternative to standard TAVI vascular access.
    Źródło:
    European Journal of Translational and Clinical Medicine; 2019, 2, 2; 80-84
    2657-3148
    2657-3156
    Pojawia się w:
    European Journal of Translational and Clinical Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A relationship between serological markers of chronic C. pneumoniae and CMV infection and hsp60 in patients with atherosclerotic carotid stenosis
    Autorzy:
    Rabczyński, Maciej
    Fiodorenko-Dumas, Żanna
    Mastej, Krzysztof
    Dumas, Ilias
    Adamiec, Rajmund
    Paprocka-Borowicz, Małgorzata
    Powiązania:
    https://bibliotekanauki.pl/articles/1039140.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    anti-hsp60
    atherogenesis
    hsCRP
    C. pneumoniae
    CMV
    carotid artery
    Opis:
    A number of epidemiological studies conducted over the last decade indicate a relationship between specific pathogen infections and the development of atherosclerosis, although no pathogenetic pathways connecting these two have been determined. Recent reports support the role of heat shock proteins (HSPs) in atherogenesis. The HSPs are also believed to be a link between the infection and the development of atherosclerotic lesions. The aims of study: Immunohistochemical evaluation of carotid artery segments to show the relationship between the presence of heat shock proteins and the serum levels of anti-hsp60 antibodies. An attempt to demonstrate a relationship between an expression of chronic C. pneumoniae and CMV antigens. Material and Methods: The study included 41 patients qualified for carotid artery endarterectomy and 18 healthy volunteers of corresponding age. Levels of anti- hsp60, anti-C. pneumoniae IgA and IgG, anti-CMV IgG antibodies as well as hsCRP were determined. Results: The mean serum levels of anti-hsp60 antibodies were higher in patients with advanced atherosclerosis as compared to healthy volunteers (55.3±64.1 vs 32.8±29.8; p < 0.05). There was a strong correlation between anti-hsp60 antibodies and the expression of hsp60 in carotid arterial wall, as confirmed by immunohistochemical evaluation. The study group showed statistically significant higher levels of hsCRP. Furthermore, statistically significant higher serum levels of anti-C. pneumoniae IgG and IgA as well as anti-CMV IgG antibodies were found in the study group as compared to controls. No correlation was shown between the markers of chronic infection induced by the tested pathogens and serum levels of anti-HSP and hsCRP. Conclusions: Higher protein expression in vascular walls is closely correlated with the level of anti-hsp60. At the same time, no significant relationship between anti-hsp60 antibodies and serological markers of infection was observed, which may only indicate an indirect role of infection in the assessment of breaking the immunological tolerance against autologous HSPs.
    Źródło:
    Acta Biochimica Polonica; 2015, 62, 1; 89-95
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Screening test for extracranial carotid lesions’ detection in patients of an outpatient vascular clinic
    Autorzy:
    Każmierski, Piotr
    Pająk, Michał
    Kruś-Hadała, Justyna
    Jęckowski, Mateusz
    Bogusiak, Katarzyna
    Powiązania:
    https://bibliotekanauki.pl/articles/1392080.pdf
    Data publikacji:
    2019
    Wydawca:
    Index Copernicus International
    Tematy:
    atherosclerotic lesions
    abdominal aorta aneurysm
    carotid artery stenosis
    screening tool
    vascular surgery
    Opis:
    Purpose The objective of the study was to evaluate the frequency and severity of atherosclerotic lesions in extracranial sections of carotid arteries and to determine the level of the correlation between these lesions and symptoms of cerebral ischemia. Secondly, to identify the most common risk factors of ischaemic stroke occurrence in population of patients of vascular outpatient clinic. Material and Methods Prospective study was conducted on a group of 1,000 people (217 women and 783 men), aged 50 to 86 years, the average age was 62 years (± 9.95). Results Atherosclerotic lesions of carotid arteries were observed in 670 examined people (67%). In 63 cases (6.3%) carotid artery occlusion was revealed. Patients with symptomatic carotid artery stenosis more frequently were addicted to cigarettes and suffered from hypertension in comparison to asymptomatic group. A statistically significant correlation between the TIA or ischemic stroke and smoking were noticed, as well as between TIA/ischemic stroke and hypertension Conclusions Among patients with atherosclerosis of peripheral arteries atherosclerotic lesions in the extracranial carotid sections occur with a high frequency. Statistically significant differences in the incidence and severity of atherosclerotic lesions in the carotid arteries were observed in this group. A statistically significant correlation was revealed between the prevalence and severity of atherosclerosis in the carotid arteries in symptomatic patients and smoking and hypertension. Performing screening in patients with atherosclerosis of the abdominal aorta and/or lower limb arteries may detect significant carotid artery stenosis, requiring surgical intervention.
    Źródło:
    Polish Journal of Surgery; 2019, 91, 5; 5-11
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ex vivo and in silico study of human Common Carotid Arteries pressure response in physiological and inverted state
    Autorzy:
    Piechna, A.
    Cieślicki, K.
    Lombarski, L.
    Ciszek, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/265143.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    artery mechanics
    residual stress
    pressure-inflation test
    common carotid artery
    tętnica szyjna
    metoda elementów skończonych
    symulacja komputerowa
    Opis:
    Arterial walls are a multilayer structures with nonlinear material characteristics. Furthermore, residua stresses exist in unloaded state (zero-pressure condition) and they affect arterial behavior. To investigate these phenomena a number of theoretical and numerical studies were performed, however no experimental validation was proposed and realized yet. We cannot get rid of residual stresses without damaging the arterial segment. In this paper we propose a novel experiment to validate a numerical model of artery with residual stresses. The inspiration for our study originates from experiments made by Dobrin on dogs’ arteries (1999). We applied the idea of turning the artery inside out. After such an operation the sequence of layer is reversed and the residual stresses are re-ordered. We performed several pressure-inflation tests on human Common Carotid Arteries (CCA) in normal and inverted configurations. The nonlinear responses of arterial behavior were obtained and compared to the numerical model. Computer simulations were carried out using the commercial software which applied the finite element method (FEM). Then, these results were discussed.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2015, 20, 1; 209-214
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Postępowanie w zwężeniach tętnicy szyjnej wewnętrznej. Historia i teraźniejszość
    Management of carotid stenosis. History and today
    Autorzy:
    Szczerbo-Trojanowska, Małgorzata
    Jargiełło, Tomasz
    Drelich-Zbroja, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/1059214.pdf
    Data publikacji:
    2013
    Wydawca:
    Medical Communications
    Tematy:
    atherosclerosis
    internal carotid artery
    stenosis
    stent
    stroke
    ultrasonography
    badanie ultrasonograficzne
    miażdżyca
    tętnica szyjna wewnętrzna
    udar
    zwężenie
    Opis:
    Internal carotid stenosis constitutes a significant clinical challenge, since it is the cause of 20–25% of ischemic brain strokes. The management of the internal carotid stenosis for many years has been raising controversies amongst neurologists, vascular surgeons and interventional radiologists mainly due to the introduction of endovascular stenting as an alternative to surgical treatment. Its application, however, requires knowledge of specific selection criteria for this kind of treatment as well as of the methods of monitoring patients after stent implantation into the internal carotid artery. Duplex Doppler ultrasound examination is currently a basis for the diagnosis of the arterial stenosis of precranial segments of the carotid arteries. It allows a reliable assessment of not only the course and morphology of the walls, but also of the hemodynamics of blood flow. Interventional treatment is applicable in patients with internal carotid stenosis of ≥70%, which is accompanied by an increase of the systolic flow velocity above 200 cm/s and the end-diastolic velocity above 50–60 cm/s in the stenotic lumen. In most cases, such a diagnosis in duplex Doppler ultrasound examination does not require any confirmation by additional diagnostic methods and if neurological symptoms are also present, it constitutes a single indication for interventional treatment. When deciding about choice of surgical or endovascular method of treatment, the following factors are of crucial importance: morphology of atherosclerotic plaque, its size, echogenicity, homogeneity of its structure, its surface and outlines. By means of ultrasound examinations, patients can be monitored after endovascular stent implantation. They enable evaluation of the degree of stent patency and allow for an early detection of symptoms indicating stenosis recurrence or presence of in-stent thrombosis. When interpreting the findings of the US checkup, it is essential to refer to the initial examination performed in the first days after the procedure and the next ones conducted during the monitoring period.
    Zwężenie światła tętnicy szyjnej wewnętrznej stanowi ważny problem kliniczny, ponieważ w 20–25% przypadków jest przyczyną udaru niedokrwiennego mózgu. Leczenie zwężeń tętnicy szyjnej wewnętrznej od wielu lat budzi kontrowersje wśród neurologów, chirurgów naczyniowych i radiologów zabiegowych, w dużej mierze w związku z wprowadzeniem metody wewnątrznaczyniowego stentowania jako alternatywy zabiegu chirurgicznego. Jej zastosowanie wymaga znajomości kryteriów kwalifikujących do tego leczenia, jak również sposobu monitorowania chorych po implantowaniu stentu do tętnicy szyjnej wewnętrznej. Ultrasonograficzne badanie duplex doppler stanowi obecnie podstawę rozpoznania zwężeń przedczaszkowych odcinków tętnic szyjnych. Pozwala na miarodajną ocenę nie tylko przebiegu i morfologii ścian tętnic, ale również hemodynamiki przepływu krwi. Leczenie zabiegowe jest stosowane u chorych ze zwężeniem tętnicy szyjnej wewnętrznej ≥70%, któremu towarzyszy wzrost maksymalnej prędkości przepływu krwi powyżej 200 cm/s i prędkości końcowo-rozkurczowej powyżej 50–60 cm/s w miejscu zwężenia. Rozpoznanie takiego zwężenia w badaniu duplex doppler w większości przypadków nie wymaga potwierdzenia innymi metodami diagnostycznymi i jeżeli dotyczy chorych z objawami neurologicznymi, może stanowić samodzielnie o wskazaniu do leczenia zabiegowego. Przy wyborze chirurgicznej lub wewnątrznaczyniowej metody leczenia istotne znaczenie mają morfologia blaszki miażdżycowej, jej wielkość, echogeniczność, jednorodność struktury, powierzchnia i obrysy. Przy pomocy badań ultrasonograficznych prowadzone jest również monitorowanie chorych po wewnątrznaczyniowym stentowaniu. Pozwalają one na ocenę drożności stentu i wczesne wykrycie objawów nawrotu zwężenia lub wystąpienia zakrzepicy w stencie. W interpretacji wyników badań kontrolnych bardzo ważna jest możliwość odniesienia się do badania wyjściowego, wykonanego w pierwszych dniach po zabiegu, oraz kolejnych przeprowadzonych w okresie monitorowania.
    Źródło:
    Journal of Ultrasonography; 2013, 13, 52; 6-20
    2451-070X
    Pojawia się w:
    Journal of Ultrasonography
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of blood flow rheology using second-grade viscoelastic model (Phan-Thien–Tanner) within carotid artery
    Autorzy:
    Ramiar, A.
    Larimi, M. M.
    Ranjbar, A. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/307522.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    tętnica szyjna
    model lepkoplastyczny
    przepływ pulsujący
    naprężenie ścinające
    OpenFOAM
    carotid artery
    viscoelastic model
    pulsatile flow
    shear stress
    Opis:
    Purpose: Hemodynamic factors, such as Wall Shear Stress (WSS), play a substantial role in arterial diseases. In the larger arteries, such as the carotid artery, interaction between the vessel wall and blood flow affects the distribution of hemodynamic factors. The fluid is considered to be non-Newtonian, whose flow is governed by the equation of a second-grade viscoelastic fluid and the effects of viscoelastic on blood flow in carotid artery is investigated. Methods: Pulsatile flow studies were carried out in a 3D model of carotid artery. The governing equations were solved using finite volume C++ based on open source code, OpenFOAM. To describe blood flow, conservation of mass and momentum, a constitutive relation of simplified Phan-Thien–Tanner (sPTT), and appropriate relations were used to explain shear thinning behavior. Results: The first recirculation was observed at t = 0.2 s, in deceleration phase. In the acceleration phase from t = 0.3 s to t = 0.5 s, vortex and recirculation sizes in bulb regions in both ECA and ICA gradually increased. As is observed in the line graphs based on extracted data from ICA, at t = 0.2 s, τyy is the maximum amount of wall shear stress and τxy the minimum one. The maximum shear stress occurred in the inner side of the main branch (inner side of ICA and ECA) because the velocity of blood flow in the inner side of the bulb region was maximum due to the created recirculation zone in the opposite side in this area. Conclusions: The rheology of blood flow and shear stress in various important parts (the area that are in higher rates of WSS such as bifurcation region and the regions after bulb areas in both branches, Line1–4 in Fig. 7) were also analyzed. The investigation of velocity stream line, velocity profile and shear stress in various sections of carotid artery showed that the maximum shear stress occurred in acceleration phase and in the bifurcation region between ECA and ICA which is due to velocity gradients and changes in thinning behavior of blood and increasing strain rate in Newtonian stress part.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2017, 19, 3; 27-41
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Tętniaki olbrzymie naczyń mózgowych u dzieci
    Giant cerebral aneurysms in children
    Autorzy:
    Kropiwnicki, Tomasz
    Kazanek, Marek
    Polis, Lech
    Zakrzewski, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/1059243.pdf
    Data publikacji:
    2008
    Wydawca:
    Medical Communications
    Tematy:
    children
    giant aneurysms
    internal carotid artery
    medial cerebral artery
    subarachnoid hemorrhage
    dzieci
    tętniak olbrzymi
    krwotok podpajęczynówkowy
    tętnica szyjna wewnętrzna
    tętnica środkowa mózgu
    Opis:
    Although children are a minority among patients with cerebral artery aneurysms, aneurisms in this age group remain a problem not to be ignored. The cause of this is a much higher incidence of giant aneurisms in child - ren in comparison to adults, sometimes with dramatic manifestation. Two children with giant aneurysms of cerebral arteries, operated on at the Department of Neurosurgery Polish Mother Memorial Hospital Research Institute in Łódź are presented in this paper. Thirteen-year-old girl had an aneurysm on the left internal cerebral artery (25 mm in diameter). Ten-year-old boy had an aneurysm on the right medial cerebral artery (40 mm in diameter). Both aneurysms presented with subarachnoid hemorrhage. Surgical treatment consisted of aneurysm clipping in the case of the boy and proximal internal cerebral artery ligation in case of the girl. In spite of surgery, the treatment was unsuccessful. on the basis of presented cases some problems connected with the management of pediatric patients with giant cerebral aneurysms are discussed.
    Wśród ogółu pacjentów z tętniakami naczyń mózgowych pacjenci pediatryczni stanowią zdecydowaną mniejszość, jednak w tej grupie wiekowej stanowią one istotny problem kliniczny. Wynika to między innymi z faktu znacznie częstszego w stosunku do populacji dorosłych występowania tętniaków olbrzymich, których przebieg kliniczny bywa niekiedy dramatyczny. W pracy przedstawiono przypadki dwojga dzieci z tętniakami olbrzymimi naczyń mózgowych leczonych operacyjnie w Klinice Neurochirurgii Instytutu Centrum Zdrowia Matki Polki w Łodzi. U 13-letniej dziewczynki stwierdzono obecność tętniaka o średnicy 25 mm położonego na lewej tętnicy szyjnej wewnętrznej. U 10-letniego chłopca rozpoznano tętniaka o średnicy 40 mm zlokalizowanego na prawej tętnicy środkowej mózgu. Chorzy zostali przyjęci do szpitala z objawami krwotoku podpajęczynówkowego, w stanie ciężkim. W obu przypadkach zastosowano leczenie chirurgiczne polegające na zaklipsowaniu szyi tętniaka u chłopca oraz zaklipsowaniu naczynia doprowadzającego u dziewczynki. U obojga dzieci dalszy przebieg leczenia był niepomyślny. W oparciu o prezentowane przypadki w pracy omówiono problemy związane z leczeniem dzieci z tętniakami olbrzymimi naczyń mózgowych.
    Źródło:
    Aktualności Neurologiczne; 2008, 8, 2; 90-94
    1641-9227
    2451-0696
    Pojawia się w:
    Aktualności Neurologiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Regional resting state perfusion variability and delayed cerebrovascular uniform reactivity in subjects with chronic carotid artery stenosis
    Autorzy:
    Szarmach, Arkadiusz
    Kaszubowski, Mariusz
    Sabisz, Agnieszka
    Frydrychowski, Andrzej
    Halena, Grzegorz
    Piskunowicz, Maciej
    Dzierzanowski, Jarosław
    Studniarek, Michał
    Szurowska, Edyta
    Winklewski, Pawel
    Powiązania:
    https://bibliotekanauki.pl/articles/1038538.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    chronic carotid artery stenosis
    computed tomography perfusion
    acetazolamide test
    cerebral blood flow
    cerebral blood volume
    mean transit time
    time to peak
    Opis:
    The aim of this study was to assess regional perfusion at baseline and regional cerebrovascular resistance (CVR) to delayed acetazolamide challenge in subjects with chronic carotid artery stenosis. Sixteen patients (ten males) aged 70.94±7.71 with carotid artery stenosis ≥ 90% on the ipsilateral side and ≤ 50% on the contralateral side were enrolled into the study. In all patients, two computed tomography perfusion examinations were carried out; the first was performed before acetazolamide administration and the second 60 minutes after injection. The differences between mean values were examined by paired two-sample t-test and alternative nonparametric Wilcoxon's test. Normality assumption was examined using W Shapiro-Wilk test. The lowest resting-state cerebral blood flow (CBF) was observed in white matter (ipsilateral side: 18.4±6.2; contralateral side: 19.3±6.6) and brainstem (ipsilateral side: 27.8±8.5; contralateral side: 29.1±10.8). Grey matter (cerebral cortex) resting state CBF was below the normal value for subjects of this age: frontal lobe - ipsilateral side: 30.4±7.0, contralateral side: 33.7±7.1; parietal lobe - ipsilateral side: 36.4±11.3, contralateral side: 42.7±9.9; temporal lobe - ipsilateral side: 32.5±8.6, contralateral side: 39.4±10.8; occipital lobe - ipsilateral side: 24.0±6.0, contralateral side: 26.4±6.6). The highest resting state CBF was observed in the insula (ipsilateral side: 49.2±17.4; contralateral side: 55.3±18.4). A relatively high resting state CBF was also recorded in the thalamus (ipsilateral side: 39.7±16.9; contralateral side: 41.7±14.1) and cerebellum (ipsilateral side: 41.4±12.2; contralateral side: 38.1±11.3). The highest CVR was observed in temporal lobe cortex (ipsilateral side: +27.1%; contralateral side: +26.1%) and cerebellum (ipsilateral side: +27.0%; contralateral side: +34.6%). The lowest CVR was recorded in brain stem (ipsilateral side: +20.2%; contralateral side: +22.2%) and white matter (ipsilateral side: +18.1%; contralateral side: +18.3%). All CBF values were provided in milliliters of blood per minute per 100 g of brain tissue (ml/100g/min). Resting state circulation in subjects with carotid artery stenosis is low in all analysed structures with the exception of insula and cerebellum. Acetazolamide challenge yields relatively uniform response in both hemispheres in the investigated population. Grey matter is more reactive to acetazolamide challenge than white matter or brainstem.
    Źródło:
    Acta Biochimica Polonica; 2018, 65, 1; 151-162
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preoperative assessment of the risk of cavernous ICA injury in endoscopic transsphenoidal surgery
    Autorzy:
    Berger, Greta
    Łukasiewicz, Adam
    Grinevych, Vitalii
    Milewska, Anna Justyna
    Tarasów, Eugeniusz
    Powiązania:
    https://bibliotekanauki.pl/articles/1391789.pdf
    Data publikacji:
    2020
    Wydawca:
    Index Copernicus International
    Tematy:
    adenoma
    cavernous segment (C4) of internal carotid artery (ICA)
    computed tomography angiography (CTA)
    endoscopic endonasal transsphenoidal surgery
    magnetic resonance angiography (MRA)
    pituitary gland
    Opis:
    In endoscopic endonasal transsphenoidal procedures, ICA injury occurs in up to 3.8% [1]. The highest hazard of injury is in case of contact between the ICA and pituitary gland, during opening of the dura. Preoperative imaging, i.e. CTA, MRA, supports objectively intraoperative techniques of imaging. CTA as well as MRA are essential to access anatomic details in variability of cavernous segments of the ICA (C4 ICA). The aim of the study was to measure the space between Internal Carotid Arteries and distances between the pituitary gland and ICA on both sides. Anatomic relations between left and right ICAs were accessed on CTA (coronal scans) at levels: A – The most concave point of the C4–C5 bend; B – The most convex point of the C4 bend; C – The C4 posterior ascending portion. Distances between pituitary gland and ICAs were measured on both sides on MRA (axial scans): A’ – The most concave point of C4–C5 bend; B’ – The most convex point of the C4 bend. The Statistica 13 (StatSoft) software was used for the statistical analysis. The Mann-Whitney U test was applied to determine differences between the groups. To analyze the strength of correlations between the quantitative variables, Spearman’s rank correlation coefficients were calculated. The results were considered statistically significant at the level of P < 0.05. Distance reduction was shown between pituitary glands and cavernous segment (C4) of ICAs on both sides, which is related to age. This has impact on surgical planning and highlights the risk of intraoperative injury of ICAs.
    Źródło:
    Polish Journal of Surgery; 2020, 92, 2; 1-7
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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