PDA Studienführer, Klassennotizen & Zusammenfassungen

PDA Study Material

Which current flow listed below causes depolarization of the neuronal cell membrane? sodium efflux chloride influx potassium efflux sodium influx Correct Answers Correct answer sodium influx An EPSP ____________ the likelihood of an action potential occurring. has no effect on has an unknown effect on decreases increases Correct Answers increases A voltage-gated ion channel is opened in response to a change in the membrane potential. phosphorylation. ligand binding. All ...

PDA questions with correct answers

PDA questions with correct answers

what is the incidence of PDA (excluding premature infants)? - Answer 10% female to male ratio of PDA - Answer female to male ratio 2:1 factors that increase the incidence of PDA: - Answer -infants with RDS requiring high peak inspiratory pressures -infants treated with surfactant -perinatal asphyxia -excessive fluid administration -congenital heart disease -genetic disposition -high altitude -1st trimester rubela infection factors that decrease the incidence of PDA

When does the PDA functionally close - Answer Within 48 hours in 90% of patients In which patients does the ductus stay open longer? - Answer 1) Premies 2) Pts with circulatory problems 3) Ventilated patients What infection is associated with PDA - Answer Maternal rubella Embryologically, what does the ductus arise from - Answer Left 6th aortic arch What does the ductus arteriosus connect - Answer Aorta to L main pulmonary artery If the patient has a R aortic arch, whe...

What is the Physiologic purpose of the PDA? - Answer Purpose in the fetus is to divert blood away from lungs in utero -Lungs are not needed in utero to oxygenate the blood, oxygenation is provided by the placenta How does the PDA work? - Answer -After birth and clamping of the umbilical cord and the first breath, the pulmonary vasculature relaxes, allowing blood to flow in, and systemic blood pressure rises, preventing continued flow of blood from the aorta crossing the PDA into pulmonar...