Dimitris Hatzichristou

Bio: Dimitris Hatzichristou is an academic researcher from Aristotle University of Thessaloniki. The author has contributed to research in topics: Reproductive health & Erectile dysfunction. The author has an hindex of 12, co-authored 20 publications receiving 1713 citations.

Medical students' attitudes toward patient-centred care: a longitudinal survey.

Abstract: PURPOSE Patient-centredness should be at the heart of medical education. This longitudinal study aimed to assess possible attitude changes towards patient-centredness in a medical students' cohort as they progressed through the clinical curriculum. It also investigated the possible impact of socio-demographic factors on students' attitudes. METHODS The same student cohort was tested on 2 occasions: during their initial exposure to clinical curricula (year 4) and after 2 years, at the end of the clerkship (year 6). Students completed a questionnaire including demographics and the 18-item Patient-Practitioner Orientation Scale (PPOS). PPOS differentiates between patient-centred versus doctor-centred or disease-centred orientation, measuring attitudes along 2 dimensions: 'sharing' and 'caring'. RESULTS A total of 483 fully completed questionnaires was returned (response rate 83%). The cohort's attitudes were significantly more doctor-centred at the end of their studies compared to the beginning of their clinical curricula (P < 0.001). However, regarding the caring part of their relationship with patients, they maintained a satisfactory level of patient-centredness. Concerning sharing information, female students were significantly more patient-centred at year 4, with their mean score decreasing at the end of their clerkship. Furthermore, among only female students, having a looser relationship with religion was associated with more patient-centred attitudes. CONCLUSIONS Increased authoritarianism in graduating students' attitudes emphasises clearly the need for future research and redesigning communication curricula. Furthermore, the influence of gender and relationship with religion on attitudes towards the doctor-patient relationship should be explored further, in order to eliminate disparities in the provision of patient-centred medical care.

A Study of Sexuality and Health among Older Adults in the United States

Abstract: BACKGROUND Despite the aging of the population, little is known about the sexual behaviors and sexual function of older people. METHODS We report the prevalence of sexual activity, behaviors, and problems in a national probability sample of 3005 U.S. adults (1550 women and 1455 men) 57 to 85 years of age, and we describe the association of these variables with age and health status. RESULTS The unweighted survey response rate for this probability sample was 74.8%, and the weighted response rate was 75.5%. The prevalence of sexual activity declined with age (73% among respondents who were 57 to 64 years of age, 53% among respondents who were 65 to 74 years of age, and 26% among respondents who were 75 to 85 years of age); women were significantly less likely than men at all ages to report sexual activity. Among respondents who were sexually active, about half of both men and women reported at least one bothersome sexual problem. The most prevalent sexual problems among women were low desire (43%), difficulty with vaginal lubrication (39%), and inability to climax (34%). Among men, the most prevalent sexual problems were erectile difficulties (37%). Fourteen percent of all men reported using medication or supplements to improve sexual function. Men and women who rated their health as being poor were less likely to be sexually active and, among respondents who were sexually active, were more likely to report sexual problems. A total of 38% of men and 22% of women reported having discussed sex with a physician since the age of 50 years. CONCLUSIONS Many older adults are sexually active. Women are less likely than men to have a spousal or other intimate relationship and to be sexually active. Sexual problems are frequent among older adults, but these problems are infrequently discussed with physicians.

Erectile Dysfunction

Abstract: Erectile dysfunction is a common clinical entity that affects mainly men older than 40 years. In addition to the classical causes of erectile dysfunction, such as diabetes mellitus and hypertension, several common lifestyle factors, such as obesity, limited or an absence of physical exercise, and lower urinary tract symptoms, have been linked to the development of erectile dysfunction. Substantial steps have been taken in the study of the association between erectile dysfunction and cardiovascular disease. Erectile dysfunction is a strong predictor for coronary artery disease, and cardiovascular assessment of a non-cardiac patient presenting with erectile dysfunction is now recommended. Substantial advances have occurred in the understanding of the pathophysiology of erectile dysfunction that ultimately led to the development of successful oral therapies, namely the phosphodiesterase type 5 inhibitors. However, oral phosphodiesterase type 5 inhibitors have limitations, and present research is thus investigating cutting-edge therapeutic strategies including gene and cell-based technologies with the aim of discovering a cure for erectile dysfunction.

Efficacy and Safety of Tadalafil Monotherapy for Lower Urinary Tract Symptoms Secondary to Benign Prostatic Hyperplasia: A Meta-Analysis

Abstract: Objective: To evaluate the efficacy and safety of tadalafil monotherapy for lower urinary tract symptoms secondary to benign prostatic hyperplasia (LUTS/BPH). <