ABSTRACT
Although ageing research increasingly incorporates resilience, a common notion on what resilience means is lacking. We aimed to give a comprehensive overview of the conceptual literature on resilience in older persons, identifying areas of consensus and variation/debate. A systematic search of eight databases from different disciplines led to the inclusion of 36 texts. Across the conceptual literature of resilience in older persons, three common features of descriptions of resilience were identified: a stressor, a response and a mechanism. Based on differences in their interpretation of how resilience is expressed we distinguished two perspectives. The first, classical and most widely applied perspective, describes the expression of resilience as a positive response to a high intensity stressor. The second, newer perspective, describes resilience in the context of responses relative to equilibrium, following low intensity stressors. Almost all descriptions across the two perspectives describe the resilience mechanism to be dynamic and emphasize the importance of the context in achieving resilience. This review provides clarity on the current conceptual status of resilience in older persons, an important step towards a higher level of consistency in the future use of resilience in ageing.
Subject(s)
Resilience, Psychological , Aged , Aged, 80 and over , Aging , HumansABSTRACT
AIMS: This study is the first to directly compare two widely used real-time 3D echocardiography (RT3DE) methods of cardiac magnetic resonance imaging (CMR) and assess their reproducibility in experienced and less experienced observers. METHODS: Consecutive patients planned for CMR underwent RT3DE within 8 h of CMR with Philips (volumetric method) and Toshiba Artida (speckle tracking method). Left ventricular ejection fraction (LVEF), left ventricular end-diastolic volume (LVEDV) and end-systolic volume (LVESV) were measured using RT3DE, by four trained observers, and compared with CMR values. RESULTS: Thirty-five patients were included (49.7 ± 15.7 years; 55 % male), 30 (85.7 %) volumetric and 27 (77.1 %) speckle tracking datasets could be analysed. CMR derived LVEDV, LVESV and LVEF were 198 ± 58 ml, 106 ± 53 ml and 49 ± 15 %, respectively. LVEF derived from speckle tracking was accurate and reproducible in all observers (all intra-class correlation coefficients (ICC) > 0.86). LVEF derived from the volumetric method correlated well to CMR in experienced observers (ICC 0.85 and 0.86) but only moderately in less experienced observers (ICC 0.58 and 0.77) and was less reproducible in these observers (ICC = 0.55). Volumes were significantly underestimated compared with CMR (p < 0.001). CONCLUSION: This study demonstrates that both RT3DE methodologies are sufficiently accurate and reproducible for use in daily practice. However, experience importantly influences the accuracy and reproducibility of the volumetric method, which should be considered when introducing this technique into clinical practice.
