To evaluate the effect of caffeine compared with theophylline treatment on the risk of apnea and use of mechanical ventilation in preterm infants with recurrent apnea. Subgroup analyses: 1  Outcomes of different doses of caffeine or theophylline. 2  Outcomes of infants born at different gestational ages or birth weights.here is some evidence that caffeine is as effective as theophylline in the short-term for reducing apnea in premature babies, is better tolerated and is easier to give. Apnea is a pause in breathing of greater than 20 seconds.
If the equator is projected outward to the celestial sphere, forming the celestial equator, it crosses the ecliptic at two points known as the equinoxes. The Sun, in its apparent motion along the ecliptic, crosses the celestial equator at these points, one from south to north, the other from north to south.
A) The celestial sphere is just another name for our universe. B) From any location on Earth, we can see only half the celestial sphere at any one time. C) When we look in the sky, the stars all appear to be located on the celestial sphere. D) The earth is placed at the center of the celestial sphere. E) The celestial sphere does not exist physically. 2) Which of the following statements about the celestial equator is true at all latitudes? A) It extends from your horizon due east, through your zenith, to your horizon due west. B) It lies along the band of light we call the Milky Way. C) It cuts the dome of your sky exactly in half. D) It represents an extension of the earth's equator onto the celestial sphere.