A new study from England defines acute lower respiratory tract infection as an uncomplicated acute illness, with cough as the primary symptom and at least one symptom or sign localized to the lower respiratory tract including sputum, chest pain, dyspnea, or wheeze.
Is It Hot In Here?; Homeopathy vs Conventional Medicine; FDA Actions
Bacterial resistance to antibiotic treatment has concerned the medical community since the introduction of the first antibiotics in the 1920s. Development of new anti-infective agents has been precipitated by increasing resistance to older agents and classes of agents.
Ultrasound utilizes frequencies well above the range of human hearing to penetrate and visualize structures in the body. While human hearing is generally in the range of 20-20,000 Hz (cycles/second), diagnostic ultrasound is typically in the range of 2-12 mega-hertz (MHz), or 2-12 million cycles per second.
