Role of ultrasound in early pregnancy in differentiating normal and abnormal pregnancies

ABSTRACT A prospective study was carried out from November 2006 -December 2008 in which a total of 304 patients with early pregnancy were examined by ultrasound (US). Of these, 203 (66.8%) cases were normal pregnancies (including 8 cases of twin pregnancy), 32 (10.5%) missed abortions, 19 (6.3%) incomplete abortions, 14 (4.6%) complete abortions, 12 (4.0%) blighted ovums, 11 (3.6%) without sonographic evidence of pregnancy, 7 (2.3%) ectopic pregnancies and 6 (1.9%) molar pregnancies. US in early pregnancy gave a reliable and accurate differentiation between a viable normal pregnancy and an abnormal/ pathological pregnancy

An Overview of Physical Risks in the Mt. Everest Region

In April and May 2019, as part of National Geographic and Rolex's Perpetual Planet Everest Expedition, an interdisciplinary scientific effort conducted a suite of research on the mountain and recognized many changing dynamics, including emergent risks resulting from natural and anthropogenic changes to the biological system. In this paper, the diverse research teams highlight risks to ecosystem and human health, geologic hazards, and changing climbing conditions that may affect the local community, climbers, and trekkers in the future. This Primer brings together perspectives from across the atmospheric, biological, geological, and health sciences to better understand emergent risks on Mt. Everest and in the Khumbu region. Understanding these risks is critical for the ~10,000 people living in the Khumbu region, the thousands of visiting trekkers, and the hundreds of climbers who attempt to summit each year