Dilatation of Vascular Prostheses in Ascending Aortic Position: A Long-Term Follow-Up Computed Tomography Study with Comparison of Different Measurement Methods

2016 ◽  
Vol 66 (03) ◽  
pp. 206-214
Author(s):  
Matthias Endlich ◽  
Christian Krämer ◽  
Chris Probst ◽  
Armin Welz ◽  
Kai Wilhelm ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Measurement Methods ◽  
Point Of View ◽  
Cross Sectional ◽  
Vascular Prostheses ◽  
Aortic Replacement ◽  
Ascending Aortic Replacement ◽  
Long Term Follow Up ◽  
Methods Of Measurement

Background The aim of this study was to evaluate long-term dilatation of Hemashield Gold and Hemashield Platinum vascular prostheses in ascending aortic position using different measurement methods to obtain precise results. Methods Between 1999 and 2007, 73 patients with Stanford type A dissection received ascending aortic replacement with Hemashield Gold and Hemashield Platinum prostheses. Measurements were performed using multiplanar reconstruction mode of electrocardiogram (ECG)-gated, multislice spiral computed tomography (MSCT) in strictly orthogonal cross-sectional planes. Different methods of measurement were compared and maximum dilatation was estimated for different time spans. Results Diameters calculated from the measured circumference showed a significant (p = 0.037) but clinically not relevant difference (0.1 mm) to the mean between the largest and the shortest cross-sectional diameter of the prosthesis. Dilatation after 24.2 ± 10.2 months was 8.5 ± 4.5%. Long-term dilatation after 91.8 ± 34 months amounted to 11.8 ± 4.2%. Conclusion Based on ECG-gated MSCT images, the presented methods of measurement provided reliable results. Long-term analysis shows low dilatation rates for Hemashield prostheses, which therefore can be considered as safe from this point of view. Nevertheless, a maximal dilatation of 20% could be relevant in valve sparing root replacement. It remains unclear if a dilatation like this contributes to the formation of suture aneurysms.

scholarly journals Long‐term follow‐up of the DeKAF cross‐sectional cohort study

2019 ◽  
Vol 19 (5) ◽  
pp. 1432-1443 ◽  
Author(s):  
Arthur J. Matas ◽  
Ann Fieberg ◽  
Roslyn B. Mannon ◽  
Robert Leduc ◽  
Joe Grande ◽  
...  
Keyword(s):  
Cohort Study ◽  
Cross Sectional ◽  
Long Term Follow Up

scholarly journals Atypical presentation of isolated traumatic ascending aortic dissection with cardiac tamponade

2021 ◽  
Vol 9 ◽  
pp. 2050313X2110606
Author(s):  
Shunya Ono ◽  
Retsu Tateishi ◽  
Masato Shioya ◽  
Yoshihumi Itoda ◽  
Yusuke Tsukioka ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Aortic Dissection ◽  
Cardiac Tamponade ◽  
High Energy ◽  
Aortic Injury ◽  
Trauma Patients ◽  
Aortic Replacement ◽  
Threatening Condition ◽  
Ascending Aortic Replacement ◽  
Blunt Traumatic Aortic Injury

Blunt traumatic aortic injury is a rare but life-threatening condition, usually following high-energy trauma. We present the case of a 79-year-old man who was transferred to a hospital complaining of nausea after being struck on the chest. Computed tomography led to diagnosis of ascending aortic dissection with cardiac tamponade. Emergent ascending aortic replacement was performed successfully and he was discharged home on postoperative day 24 without any complications. The key to early diagnosis of blunt traumatic aortic injury is careful and detailed history-taking. If trauma patients complain of unexplained symptoms, the threshold for conducting computed tomography should be lowered to avoid misdiagnosis or therapeutic delay.

scholarly journals Side Effects Following Administration of the First Dose of Oxford-AstraZeneca’s Covishield Vaccine in Bangladesh: A Cross-Sectional Study

2021 ◽  
Vol 13 (4) ◽  
pp. 888-901
Author(s):  
Nishat Jahan ◽  
Fahad Imtiaz Rahman ◽  
Poushali Saha ◽  
Sadia Afruz Ether ◽  
ASM Roknuzzaman ◽  
...  
Keyword(s):  
Side Effects ◽  
Rapid Development ◽  
Age Groups ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Post Vaccination ◽  
Long Term Follow Up ◽  
Larger Sample

In response to the raging COVID-19 pandemic, Bangladesh started its vaccine administration in early 2021; however, due to the rapid development and launch of the vaccines in the market, many people had concerns regarding the safety of these vaccines. The purpose of this study was to evaluate the side effects that were experienced by the Bangladeshi residents after receiving the first dose of the Oxford-AstraZeneca’s Covishield vaccine (ChAdOx1nCoV-19). The study was conducted using both online and printed questionnaires and the data were analysed using SPSS. The results included the responses of 474 vaccine recipients from March–April 2021. Pain at the site of injection, fever, myalgia, fatigue and headache were the most commonly reported symptoms, and the overall side effects were found to be significantly more prevalent in the younger population (p ≤ 0.05). These findings were consistent with the results indicated by the clinical trial of ChAdOx1nCoV-19. Logistic regression analysis further revealed that compared to people aged 70 years or above, the incidence of reported side effects was significantly higher in people aged 18–30 years (odds ratio (OR) = 8.56), 31–40 years, (OR = 5.05), 41–50 years (OR = 4.08), 51–60 years (OR = 3.77) and 61–70 years (OR = 3.67). In addition, a significantly higher percentage of female participants suffered from post-vaccination side effects compared to males (OR = 1.51). It was concluded that the Covishield vaccine was well-tolerated among people of different age groups. Nevertheless, further long-term follow-up study with a larger sample size is warranted to establish the long-term safety of the COVID-19 vaccine.

Long-term follow up after bony mastoid and epitympanic obliteration: radiological findings

2009 ◽  
Vol 124 (1) ◽  
pp. 37-43 ◽  
Author(s):  
J-P Vercruysse ◽  
B De Foer ◽  
T Somers ◽  
J Casselman ◽  
E Offeciers
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Canal Wall ◽  
Resonance Imaging ◽  
High Resolution Computed Tomography ◽  
Long Term Follow Up ◽  
Echo Planar ◽  
Canal Wall Up

AbstractObjective:The canal wall up bony obliteration technique lowers the incidence of recurrent cholesteatoma, but carries the potential risk of obliterating residual cholesteatoma. The objective of this study was to report long-term follow-up radiological findings after performing a canal wall up bony obliteration technique procedure, in order to detect residual and/or recurrent cholesteatoma.Patients:Fifty-one patients presenting with a cholesteatoma or a troublesome cavity were operated upon using the canal wall up bony obliteration technique, and were evaluated by follow-up imaging a mean of 76.4 months post-operatively (range, 53.8–113.6 months).Intervention:All patients were evaluated with high resolution computed tomography and magnetic resonance imaging (including delayed contrast, T1-weighted imaging and non-echo-planar, diffusion-weighted imaging).Results:Imaging revealed the presence of one residual, one recurrent and one congenital petrosal apex cholesteatoma. On high resolution computed tomography, completely obliterated mastoid filled with bone was observed in 74.5 per cent (38/51) of patients, and an aerated middle-ear cavity in 64.7 per cent (33/51). High resolution computed tomography clearly detected any associated soft tissue present in the middle-ear cavity (18/51) and in the obliterated mastoids (13/51), but could not characterise this tissue. Non-echo-planar, diffusion-weighted magnetic resonance imaging clearly identified all three cholesteatomas, and differentiated them from other associated soft tissues. No cholesteatoma was found within the obliterated mastoids.Conclusion:Long-term follow up indicated that the canal wall up bony obliteration technique is a safe method with which to treat primary and recurrent cholesteatoma and to reconstruct unstable cavities. Soft tissue was found quite often in the middle ear and obliterated mastoids. High resolution computed tomography identified its presence but could not further characterise it. However, non-echo-planar, diffusion-weighted magnetic resonance imaging succeeded in differentiating soft tissues, enabling detection of residual or recurrent cholesteatoma after a canal wall up bony obliteration technique procedure.

scholarly journals Malondialdehyde can predict survival in hemodialysis patients

2016 ◽  
Vol 89 (2) ◽  
pp. 250-256 ◽  
Author(s):  
Crina Claudia Rusu ◽  
Simona Racasan ◽  
Ina Maria Kacso ◽  
Diana Moldovan ◽  
Alina Potra ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Cox Model ◽  
Statistical Significance ◽  
Morbidity And Mortality ◽  
Protein Carbonyls ◽  
Cross Sectional ◽  
Long Term Follow Up ◽  
Cv Disease

Background and aims. Cardiovascular (CV) disease is the leading cause of morbidity and mortality in hemodialysis (HD) patients. Kidney disease is associated with increased oxidative stress (OS), a nontraditional CV risk factor. Few studies evaluate the effect of OS markers on CV events (CVE) and survival in HD patients. The aim of this study is to examine potential determinants of OS markers and their predictive role on survival and CV morbidity and mortality in HD patients during a long-term follow-up (108 months).  Methods. We conducted an analytical cross-sectional prospective observational study, carried on a cohort of randomly selected HD patients. We registered in 44 HD patients baseline characteristics, OS markers, mortality and CVE over a period of 108 months and we used statistical analysis (descriptive, Kaplan-Meier, univariate and multivariate Cox model) for interpretation.Results. Bound malondialdehyde (bMDA) was positively correlated with serum calcium, protein carbonyls (PC) were inversely correlated with diastolic blood pressure (DBP) and directly correlated with ferritin, NOx was directly correlated with ceruloplasmin) and serum albumin. Of the measured OS markers only bMDA was related to survival (HR=3.29 95% CI (1.28-8.44), p=0.01), and approached statistical significance in the effect on CV mortality (HR=2.85 95% CI (0.88-9.22), p=0.07). None of the measured OS markers was associated with CVE.Conclusions. bMDA has a strong predictive value on survival in HD patients in a long-term follow-up (9 years). Its value is correlated with CV mortality but is not a predictor of CV events. Regular assessment of MDA in HD patients and the development of strategies aimed at reducing oxidative stress in these patients might be beneficial.

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