Knowledge, practices and expectations of preventive care: a qualitative study of patients attending government general outpatient clinics in Hong Kong.

BACKGROUND: Evidence-based preventive care recommendations have been well established, but studies have persistently reported gaps between these recommendations and general practitioners' practices in providing preventive care. Many studies have explored factors that affect the delivery of preventive care from the perspectives of the practitioners, but relatively few have evaluated the patients' point of view. The purpose of this study was to explore patients' understanding of preventive care, the actions they were taking in terms of preventive health and their expectations from family doctors in providing preventive care. METHODS: A qualitative study was conducted based on one-on-one in-depth interviews. Twenty-eight patients without chronic illnesses were purposively recruited from government general outpatient clinics in Hong Kong. The interviews took place between November 2013 and February 2014. RESULTS: The participants' knowledge of preventive care was limited, and their preventive practices were mostly restricted to healthy lifestyle practices. They rarely obtained individualised preventive care advice from doctors. Screening investigations were initiated after symptoms had already occurred, and the decision of what to check was arbitrary. Few of the participants knew what they wanted from their doctors in terms of preventive care. CONCLUSIONS: These findings show significant gaps between evidence-based preventive recommendations and patients' current knowledge and practice, and show the need for a wider spectrum of preventive care education and reliable sources to provide individualised and affordable preventive assessment and screening services. Most importantly, primary care providers must take a more proactive role to provide preventive services.

PGC-1α promotes recovery after acute kidney injury during systemic inflammation in mice.

Sepsis-associated acute kidney injury (AKI) is a common and morbid condition that is distinguishable from typical ischemic renal injury by its paucity of tubular cell death. The mechanisms underlying renal dysfunction in individuals with sepsis-associated AKI are therefore less clear. Here we have shown that endotoxemia reduces oxygen delivery to the kidney, without changing tissue oxygen levels, suggesting reduced oxygen consumption by the kidney cells. Tubular mitochondria were swollen, and their function was impaired. Expression profiling showed that oxidative phosphorylation genes were selectively suppressed during sepsis-associated AKI and reactivated when global function was normalized. PPARγ coactivator-1α (PGC-1α), a major regulator of mitochondrial biogenesis and metabolism, not only followed this pattern but was proportionally suppressed with the degree of renal impairment. Furthermore, tubular cells had reduced PGC-1α expression and oxygen consumption in response to TNF-α; however, excess PGC-1α reversed the latter effect. Both global and tubule-specific PGC-1α-knockout mice had normal basal renal function but suffered persistent injury following endotoxemia. Our results demonstrate what we believe to be a novel mechanism for sepsis-associated AKI and suggest that PGC-1α induction may be necessary for recovery from this disorder, identifying a potential new target for future therapeutic studies.

Pulmonary hypertension and beta-thalassemia major: report of a case, its treatment, and a review of the literature.

Pulmonary hypertension is a common complication of beta-thalassemia major. We report a case of successful treatment of pulmonary hypertension in a patient with beta-thalassemia major and review the literature on pulmonary hypertension and beta-thalassemia major. A 28-year-old man with beta-thalassemia major, splenectomy, hepatitis C, and hemosiderosis who presented with increasing dyspnea on exertion was diagnosed with pulmonary hypertension. After receiving continuous epoprostenol infusion and desferoxamine, his functional capacity and hemodynamic status improved. To our knowledge, this is the first case of pulmonary hypertension associated with beta-thalassemia treated with continuous epoprostenol infusion and desferoxamine. Epoprostenol, beneficial in the treatment of other types of pulmonary hypertension, may ameliorate the morbidity and mortality of pulmonary hypertension associated with thalassemia.