Chinese Science Bulletin

Dry socket, or alveolar osteitis, is a common complication following tooth extraction, characterized by partial or complete loss of the blood clot within the extraction site. It typically presents with intense pain, exposed alveolar bone, necrotic tissue, and unpleasant odor. The exact mechanism remains poorly understood, but increased fibrinolytic activity due to various factors is thought to play a role. Incidence ranges from 1% to 5% for all extractions, reaching up to 38% for mandibular third molars. Surgical trauma, complexity of the procedure, operator experience, smoking, oral contracep

Pulmonary rehabilitation is a comprehensive, multidisciplinary intervention designed to improve the physical and psychological well-being of patients with chronic respiratory diseases. This evidence-based approach combines exercise training, education, self-management strategies, nutritional support, and psychosocial interventions to reduce symptoms, optimize functional status, and enhance quality of life. Exercise training is a key component of pulmonary rehabilitation, with programs typically incorporating endurance and strength training exercises for both upper and lower extremities. The fr

Hepatitis B virus (HBV) infection poses a significant global health burden, with healthcare workers (HCWs) at increased risk due to occupational exposure. This study aimed to assess the knowledge, attitudes, and practices (KAP) regarding HBV among nurses in Saudi Arabia. A cross-sectional survey was conducted using a structured questionnaire distributed to 508 randomly selected nurses. The results revealed that 64.8% of participants had a diploma degree, 30.2% had a bachelor's degree, and 5.0% had a master's/PhD degree. The majority (74.1%) were female, and 35.8% had 4-10 years of work experie

This study investigates the implementation of Total Quality Management (TQM) practices in Saudi Arabia's healthcare sector through a cross-sectional analysis. The research aims to assess healthcare professionals' perceptions of quality management dimensions within their organizations, focusing on factors such as customer focus, continuous improvement, leadership commitment, employee involvement, and process management. A descriptive method was employed, utilizing a questionnaire distributed to a random sample of 360 healthcare workers in Saudi Arabia. The findings reveal a generally positive p

Asthma is a chronic inflammatory disorder of the airways characterized by recurrent episodes of wheezing, breathlessness, chest tightness, and coughing. The pathophysiology involves various cells and cellular components, including mast cells, eosinophils, T lymphocytes, macrophages, neutrophils, and epithelial cells. This inflammation leads to widespread but variable airflow obstruction and increased bronchial sensitivity to a range of stimuli. Asthma affects over 330 million people worldwide, with prevalence rates varying widely between countries. Epidemiological studies have shown increasing