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- Fex, Angelika, 1955-
(författare)
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From novice towards self-care expert : studies of self-care among persons using advanced medical technology at home
- 2010
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The use of advanced medical technology at home has increased in most industrialized countries. The overall aim of this thesis was to develop knowledge of self-care and transition and issues that influence daily life and health among persons using advanced medical technology at home.Three qualitative studies were performed to describe the structure of self-care (I) and elucidate meanings of health-illness transition experiences among persons using long-term oxygen, or a ventila-tor, or performing blood or peritoneal dialysis (II), and to gain a deeper understanding of the meaning of living with an adult family member in this context (III). Ten interviews with adult patients (I-II) and ten with adult next of kin (III) in this context were performed and analysed with descriptive phenome-nological (I), phenomenological hermeneutical (II) and hermeneutical (III) methods. A quantitative, descriptive, comparative, cross-sectional design was used to describe and find factors that influence self-care agency and perceived health in a larger group of persons (180 patients) using the enumerated types of advanced medical technology at home (IV).In the results, (I) self-care among persons using long-term oxygen, a ventilator, or equipment for blood or peritoneal dialysis at home was described at a generic level, independent of the specific type of technology used. The general description of self-care in this context involved prerequisites for, activities for and consequences of self-care; (II) the health-illness transition among adult persons in this context was interpreted as contentment at being part of the active and conscious process towards transcending into a new state of living, in which the individual and the technology were in tune. The successful and healthy transition experience was characterized by human growth and becoming; (III) living with a family member who is using advanced medical technology at home was interpreted as meaning rhythmical patterns of being closely connected to but also separated from him or her, and of sorrow versus reconciliation. Dependence on others was reflected in a need for support from the healthcare professionals and significant others; (IV) health-related and technology-related variables in daily life were rated as satisfactory to quite a high extent, but participants using long-term oxygen perceived their health as significantly lower compared to the other technology groups. Further, a significant difference in sense of coherence was found between users of long-term oxygen and peri-toneal dialysis. Factors that contributed to self-care agency and sense of coherence were found.In conclusion, self-care in a high-tech home context means more than simply mastering the technology. With the goal of maintaining an active, social life, the health-illness transition involves a learning process of accepting and integrating the technology into daily life. With knowledge and support, patients and next of kin are able to assume substantial responsibility for self-care/dependent-care. Daily life seems to be manageable for patients using this kind of technology at home.
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| 3. |
- Östman-Smith, Ingegerd, 1947, et al.
(författare)
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Electrocardiographic amplitudes : a new risk factor for sudden death in hypertrophic cardiomyopathy.
- 2010
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Ingår i: European Heart Journal. - : Oxford University Press. - 0195-668X .- 1522-9645. ; 31:4, s. 439-449
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Tidskriftsartikel (refereegranskat)abstract
- AIMS: Assessment of ECG-features as predictors of sudden death in adults with hypertrophic cardiomyopathy (HCM).METHODS AND RESULTS: ECG-amplitude sums were measured in 44 normals, 34 athletes, a hospital-cohort of 87 HCM-patients, and 29 HCM-patients with sudden death or cardiac arrest (HCM-CA). HCM-patients with sudden death or cardiac arrest had substantially higher ECG-amplitudes than the HCM-cohort for limb-lead and 12-lead QRS-amplitude sums, and amplitude-duration products (P = 0.00003-P = 0.000002). Separation of HCM-CA from the HCM-cohort is obtained by limb-lead QRS-amplitude sum >or=7.7 mV (odds ratio 18.8, sensitivity 87%, negative predictive value (NPV) 94%, P < 0.0001), 12-lead amplitude-duration product >or=2.2 mV s (odds ratio 31.0, sensitivity 92%, NPV 97%, P < 0.0001), and limb-lead amplitude-duration product >or=0.70 mV s (odds ratio 31.5, sensitivity 93%, NPV 96%, P < 0.0001). Sensitivity in HCM-patients <40 years is 90, 100, and 100% for those ECG-variables, respectively. Qualitative analysis showed correlation with cardiac arrest for pathological T-wave-inversion (P = 0.0003), ST-depression (P = 0.0010), and dominant S-wave in V(4) (P = 0.0048). A risk score is proposed; a score >or=6 gives a sensitivity of 85% but a higher positive predictive value than above measures. Optimal separation between HCM-CA <40 years and athletes is obtained by a risk score >or=6 (odds ratio 345, sensitivity 85%, specificity 100%, P < 0.0001).CONCLUSION: Twelve-lead ECG is a powerful instrument for risk-stratification in HCM.
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