The cord that connects the developing fetus with the placenta while the fetus
is in the uterus. The umbilical arteries and vein
run within this cord. The umbilical cord is clamped and cut at birth, and its residual tip forms the
The vestige left behind on a newborn’s belly when the umbilical cord is cut. Also called the navel or belly button.
- Unassisted childbirth
Birth of a baby without the assistance of an obstetrician, midwife, or other health professional. This may be by accident or by design. Unassisted childbirth is fraught with risks since about a fifth of apparently normal pregnancies develop unexpected complications during labor and turn into high-risk, sometimes life-threatening, situations.
By Atul Gawande. Metropolitan Books/Henry Holt & Co., New York, 2002.
1. Interruption of awareness of oneself and one’s surroundings, lack of the ability to notice or respond to stimuli in the environment. A person may become unconscious due to oxygen deprivation, shock, central nervous system depressants such as alcohol and drugs, or injury. 2. In psychology, that part of thought and emotion that happens outside […]
- Unconsciousness, temporary
Abnormal heart rhythms (heart beating too fast or too slow). Abnormalities of the heart valves (aortic stenosis or pulmonic valve stenosis). High blood pressure in the arteries supplying the lungs (pulmonary artery hypertension). Tears in the aorta (aortic dissection). Widespread disease of the heart muscle (cardiomyopathy). To be sure, many of the causes of temporary […]