According to Wikipedia, the width of the Atlantic Ocean at its narrowest point is 2,848 kilometers (1,770 mi) between Brazil and Sierra Leone.
Patent ductus arteriosus (PDA) is a heart condition caused by the failure of the ductus arteriosus to close.The ductus arteriosus normally is a temporary blood vessel connecting the main vessel leading to the lungs (pulmonary artery) to the main vessel of the body (aorta).If the vessel remains open after birth, it is called a patent ductus arteriosus or PDA. PDA occurs in about 10 percent of newborns.f it doesnât close, the baby has the defect known as patent (open) ductus arteriosus. This defect occurs especially in premature babies who have had respiratory distress syndrome (difficult breathing) due to immature lungs. The cause of PDA is unknown.
Atelectasis. Atelectasis, or localized obstruction of the lungs that may result from mucus plug obstruction, can occur resulting to the collapse of a portion of the lungs. This is enumerated by the study published by Respiratory Care in September 2007.ucus plugs can cause airway obstruction in the lungs. Photo Credit thorax x-ray of the lungs image by JoLin from Fotolia.com. Mucus plug, the excessive secretion of slippery substance produced by the cells lining the airways of the lungs, is a result of various respiratory conditions that exhibit mucus hypersecretion.