to right heart failure, and is therefore a sign of impending disaster for many patients with common heart and lung diseases. We have known for a long time that hypoxia constricts lung vessels and causes pulmonary hypertension in acute experiments; this response may be important in disease as well. There are many theories about the mechanism of this hypoxic response, none of them generally accep...

Today’s medical students and residents are from the first generation of digital natives: those who grew up with cell phones, text messaging, and the Internet. They are comfortable with e-innovation, are increasingly disengaged from traditional teaching methods within medical schools and residency programs, and are quick to embrace new teaching technologies. Students instead stream lectures from...

BACKGROUND Many instruments for evaluating clinical teaching have been developed but almost all in Western countries. None of these instruments have been validated for the Asian culture, and a literature search yielded no instruments that were developed specifically for that culture. A key element that influences content validity in developing instruments for evaluating the quality of teaching ...

Case A 37-year-old asymptomatic male physician from Mexico without any previous medical problems was referred after routine physical examination for evaluation of atrial fibrillation with a slow ventricular rate. Arrhythmia duration was unknown. He stated that bradycardia had been consistently noted on previous clinical examinations and had been attributed to competitive long-distance running s...