BackgroundThe objective assessment of global and regional cardiac function in children has shown to be clinically relevant but is challenging to conduct. Cardiovascular magnetic resonance (CMR) has emerged as a valuable diagnostic modality especially in patients with cardiomyopathy or congenital heart disease. However, data on the normal cardiac deformation in children assessed by CMR is lacking at present. Thus, the aim of this study was to provide reference values for cardiac strain and strain rate in children and adolescents derived from CMR feature tracking (FT) measurements.MethodsIn this binational study, eighty children and adolescents (age 0.4–18.0 years, 41 male, 39 female) free from cardiac diseases from two centers underwent CMR in 1.5 T whole-body scanners in supine position. Global peak radial, circumferential and longitudinal systolic strains as well as the corresponding early peak diastolic strain rates were assessed applying FT on short axis as well as 3- and 4-chamber views of standard cine steady-state free precession images.ResultsThe difference between genders yielded no significance for all assessed strains. Yet, all strains showed a significant parabolic relation to age and an even stronger one to body surface area (BSA). Therefore, BSA-specific reference values were determined using a polynomial regression model. The apical cardiac segments featured significant higher peak circumferential but lower peak radial systolic strains than the midventricular and basal segments (all p < 0.001).ConclusionsThe assessment of cardiac deformation by CMR-FT is feasible in children. This is the first CMR study providing specific reference values for FT-derived strain and strain rate in the pediatric age range.Electronic supplementary materialThe online version of this article (doi:10.1186/s12968-016-0310-x) contains supplementary material, which is available to authorized users.
BackgroundSeveral promising studies suggest a positive impact of interactive and media-enriched e-learning resources such as virtual patients (VP) on skill acquisition in pediatric basic life support (PBLS). This study investigates which immanent VP components account for this effect.MethodsN = 103 medical students in their 5th year were assigned to one of three groups: a video group prepared with self-instructional videos on PBLS (N = 37); an animation-enriched VP group with VP containing interactive questions (N = 35), static and animated media, and a static VP group with VP containing interactive questions and only static media (N = 31). Subsequent PBLS demonstrations were video-documented and scored for adherence to guideline-based algorithm, temporal demands (such as correct pace of rescue breaths and chest compressions), and quality of procedural steps (e.g., correct head positioning), as well as overall competency by two group-blinded, independent pediatricians.ResultsGroups did not differ with regard to adherence to correct algorithm (88.7 ± 10.3, 93.3 ± 6.7 and 90.3 ± 10.5, respectively). Self-instruction with animated media – through videos or animation-enriched VP – resulted in a better adherence to temporal demands, as compared with training with static VP (64.5 ± 26.3 and 50.7 ± 25.7, respectively, vs. 23.8 ± 21.0). Procedural quality by the video group was slightly inferior compared with the animation-enriched VP group (79.5 ± 12.3 vs. 82.0 ± 11.9), and distinct inferior in overall ‘competent’ ratings (43.2% vs. 65.7%). The static VP group performed considerably most poorly of all three groups (temporal adherence 73.2 ± 11.9 and 19.4% ‘competent’ ratings).ConclusionsVP can feasibly enhance PBLS skill acquisition. Thoughtful design of animations and interactivity of the VP further improves such skill acquisition, both in quality of performance and in adherence to temporal demands.
Zusammenfassung Ziele Die vorgelegten Empfehlungen sollen zur weiteren Verbesserung und Standardisierung der ärztlichen Versorgung von Betroffenen sexualisierter Gewalt, insbes. von einer Vergewaltigung betroffenen weiblichen Minderjährigen in Deutschland beitragen. Sie wendet sich vor allem an Frauenärztinnen und Frauenärzte in der Klinik und in der Niederlassung und ergänzt die umfangreiche Kinderschutzleitlinie der Bundesrepublik Deutschland. Methoden Unter Einbeziehung der Ergebnisse einer umfassenden selektiven Literaturrecherche wurden von einer interdisziplinär besetzten Gruppe von Expertinnen und Experten in einem 3-stufigen Verfahren im Auftrag des Vorstands der DGGG diese Empfehlungen erarbeitet und im Konsens verabschiedet. Zusammenfassung Diese DGGG-Stellungnahme ist entsprechend dem Alter der Betroffenen (ca. 14 bis 17 Jahre/pubertär; 0 bis ca. 13 Jahre/präpubertär) zweigeteilt. Dies hat medizinische, strukturelle und forensische Gründe. Es werden zahlreiche Empfehlungen zum Umgang mit den mutmaßlich von akuter sexualisierter Gewalt bzw. einer Vergewaltigung betroffenen Minderjährigen, zur Erstversorgung, zu Versorgungsformen (z. B. Vertrauliche Spurensicherung), zur Anamneseerhebung, zur medizinisch-forensischen Untersuchung, zur medizinischen, psychischen und psychosozialen Versorgung sowie zur Nachbetreuung gegeben.
Background: Congenital cardiovascular malformations (CCVM) may cause infrequently airway pathologies (AP) in children and are of prognostic and therapeutic relevance. While computed tomography (CT) is considered first-line imaging modality in many centres, we started using magnetic resonance imaging (MRI) more and more in the last years to detect CCVM and AP to avoid radiation in this patient group. Objective: The aim of this retrospective study was to determine and to compare the diagnostic accuracy of CT and MRI when used to detect CCVM and/or AP. Methods: All patients suspected to have CCVM and/or AP and examined either by CT or MRI between 2000 and 2013 in our hospital were included. Extension and type of CCVM, as well as their relationship to esophagus, trachea or bronchi were assessed and related to findings of tracheobronchoscopy, cardiac catheterization or surgery if available. Results: One hundred six patients (median [range] 4 years [2 days to 66 years]) were examined by CT (n = 27) or MRI (n = 79). In 78 patients (74%), CCVM and/or AP were found with either of the imaging methods. CCVM were found in 63 subjects. Forty-six of 63 subjects had both, CCVM and AP. The presence of CCVM was always detected correctly by CT or MRI, although both techniques had a weakness detecting atretic segments directly. AP (n = 61) were correctly diagnosed in all patients not intubated for artificial ventilation by CT (n = 17) and in all but 2 patients by MRI (39 out of 41). Conclusions: MRI is sensitive to detect CCVM associated with AP equally to CT without any radiation exposure.
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