Phonon-wave-induced resonance fluorescence in semiconductor nanostructures: acoustoluminescence in the terahertz range.

Acoustic wave excitation of semiconductor quantum dots generates resonance fluorescence of electronic intersublevel excitations. Our theoretical analysis predicts acoustoluminescence, in particular, a conversion of acoustic into electromagnetic THz waves over a broad spectral range.

Survey of sexual concerns among organ transplant recipients.

This study identified frequency of sexual dysfunction, degree of satisfaction with sexual relationship, differences in sexual function, overall satisfaction and life quality, and desire for and receipt of instruction regarding sexual dysfunction in kidney, pancreas/kidney, and liver transplant recipients. Of the 768 adult recipients surveyed by mailed questionnaire, 39% responded. Intimate relationships were reported by 69.9%; 66.7% indicated satisfaction with their relationship. Twenty-six percent were not sexually active. Transplant groups did not differ significantly regarding satisfaction, sexual function, or quality of life. Satisfaction groups differed significantly regarding intimacy and expected future life and health quality. Frequency of intercourse, desire, orgasm, erection dysfunctions, and the acceptance of partners' advances related to relationship satisfaction. Sixty-seven percent received no instruction concerning sexuality or fertility. Education efforts could validate and support sexual identity among this patient population.

Sexuality and fertility concerns of dialysis patients.

OBJECTIVES: The purposes of this study were to identify the frequency of sexual and fertility dysfunctions and satisfactions experienced by patients on dialysis therapy and their relationships to life quality variables, and whether patients desired to or received instruction regarding possible sexuality and fertility problems. DESIGN: The study used a descriptive, survey design. SAMPLE/SETTING: A convenience sample was obtained from 7 hospital-based dialysis centers in the state of Iowa. METHOD: A mailed questionnaire, composed of 7 instruments, was used to survey demographic and medical variables, activity level, fertility and sexual dysfunction, intimacy patterns, sexual attitudes, life and health quality, and satisfaction with sexual relationships of patients treated with dialysis therapy. RESULT: Sixty-five percent of the subjects (n = 135) were dissatisfied with their sexual relationship, 40% no longer engaged in intercourse or sexual activity, yet only 25% had received instruction regarding possible dysfunctions. Subjects satisfied with their sexual relationships differed significantly (p < .05) from those who were dissatisfied in activity level, intimacy patterns, and life and health quality with frequency of arousal, orgasm, and acceptance of partner's advances significantly related to sexual satisfaction. CONCLUSION: The standards of care identified by the American Nephrology Nurses' Association regarding sexuality had not been achieved in the sample measured.

Pancreatic transplantation. Impact on the quality of life of diabetic renal transplant recipients.

OBJECTIVE: To determine the impact of pancreas transplantation on the quality of life of renal transplant recipients with diabetes. RESEARCH DESIGN AND METHODS: In this quasi-experimental comparative study of 41 successful pancreas transplant (SP) recipients, 13 failed pancreas transplant (FP) recipients, and 28 kidney alone (KA) transplant recipients, we collected data from individuals who had their pancreas/kidney or kidney alone transplants > or = 6 months before at a university tertiary care center. This study was an extension of a 1992 study of SP and FP recipients. The subject group was enlarged with additional pancreas/kidney recipients and a control group of KA recipients. Five dimensions of life quality were measured. RESULTS: Groups did not differ significantly regarding age, gender, marital status, comorbidity, type of prior dialysis, current kidney function, length of time since transplant, physical activity, symptom burden, emotional state, and feelings of well-being. A significant time by group interaction occurred for quality of life (P = 0.0023) and health (P = 0.0001). Patients in the SP and KA groups perceived their past life and health quality to be significantly lower and their present and future life and health quality to be significantly better than did the FP group. The groups' major concerns differed significantly. The FP group's concern related to diabetes, the SP group's to immunosuppression, and the KA group's to graft rejection. CONCLUSION: Patients with failed pancreas but successful kidney transplants see less improvement in their quality of life than do patients who meet their transplant goals, irrespective of whether they receive a pancreas.

Quality of life of pancreatic transplant recipients.

OBJECTIVE: To comprehensively assess and compare pancreas/kidney transplant recipients' quality of life. RESEARCH DESIGN AND METHODS: This quasi-experimental comparative study of 31 successful and 13 failed pancreas transplant recipients collected data from persons who had received pancreas and kidney transplants > or = 6 mo prior at a university tertiary care center. Physical and social function, symptoms, mental state, and sense of well-being of the recipients were assessed. RESULTS: Groups did not differ significantly regarding age, gender, marital status, onset or length of diabetes, comorbidity, type of prior dialysis, current kidney function, length of time since transplant, physical activity, symptom burden, emotional state, feelings of well-being, and present quality of life and health. A significant time by group interaction occurred for quality of life (P = 0.0013) and health (P = 0.0001). The successful group indicated that both quality of life and health were significantly better than in the past, and continued improvement was expected. The unsuccessful group did not have this perception. Members of the failed group were significantly more satisfied with their social support. The unsuccessful group's major concerns related to diabetes, not immunosuppression. CONCLUSIONS: Recipients of successful pancreas transplants perceived their improvement in health and quality of life to be significantly greater than the unsuccessful recipients.

Competence to provide health education: perception of nursing students and faculty.

A survey study was conducted to examine perceptions about health education competence. Faculty and students from two baccalaureate nursing programs completed a 41-item questionnaire rating both present and desired competence to provide health education. The results indicated that: (1) students had a higher expectation of performance for the role of health educator than did the faculty, (2) the present performance level for all groups was at a lower level than the desired performance for the future, (3) faculty and students perceived less competence for application of the teaching process with groups than with individuals, (4) students currently perceive themselves at the same level that faculty identifies as the desired level of competence, and (5) the desired performance level for graduates was defined as ability to perform without supervision and with reasonable efficiency.

Pancreas transplantation: assessing secondary complications and life quality.

Two sequential studies of life quality among pancreas transplant recipients are reported. The first study (n = 32) investigated symptoms of neuropathy, enteropathy and retinopathy, along with well-being post successful transplantation. Patients noted improvement in secondary complications, were satisfied with the procedure and expressed hope for the future. The second study compared physical and social function, burden of symptoms, emotional/mental state and sense of well-being in successful (n = 31) and successful (n = 13) pancreas transplant recipients. Patient satisfaction with pancreas transplantation was high. Successful transplant patients perceived their health to be good, believed it would continue to be good, with life quality becoming better over time. The failed group expected life quality to become worse.

Fatigue.

Fatigue is a pervasive, protective phenomenon affecting the totality of the individual. Assessment and management involve a wide range of activities to address the total human being's physical, psychological, cognitive, and spiritual dimensions. When elimination or neutralization of the effect of an antecedent condition is not an option, redesigning one's life-style may be the primary avenue of fatigue management. This protective mechanism, fatigue, may in fact herald the return of quality and purpose to one's life.