Mechanical ventilation in a situation of mass casualty respiratory failure will require a substantial increase in the capacity for mechanical ventilation, to prevent unnecessary mortality. Concern over the difficulties of treating large numbers of patients with respiratory failure is exceeded only by our lack of experience on which to base decisions. This review evaluates the likely scenarios t...

The proestrus preovulatory luteinizing hormone (LH) surge was absent or delayed in more than 56% of untreated streptozotocin-diabetic rats. Absence of LH surge was associated with anovulation. Insulin treatment for 10-14 days restored the diminished surge and ovulation frequency. Pituitary LH release in response to exogenous gonadotropin-releasing hormone administration in diabetic rats was not...

Through ambulatory blood pressure (BP) monitoring, we know that BP usually follows a distinct circadian rhythm, characterized by a nocturnal decline during sleep of 10% to 30%, followed by a moderate-to-marked increase coinciding with the time of awakening.1 For 2 decades, there has been great interest in the early morning period by preventive cardiologists and hypertension specialists, because...

Progress report on the restructuring of two IEEE standards concerned with surges in low-voltage a.c. power circuits into a Trilogy of three documents. First a basic Guide describes the surge environment, then a Recommended Practice proposes a limited set of representative surge waveforms for test purposes, and finally a Recommended Practice shows how to perform safe, repeatable and reliable sur...