<prompt> With regards to acute pyelonephritis in pregnancy all of the following are true except:Left kidney is involved in 50 of patientsMost common isolate is E. coliMore common in later 12 of pregnancyResponds to amino glycosides  <response>: Pyelonephritis in Pregnancy:Etiology:Incidence in pregnancy is 1-3More common in primigravida and young femalesUsually occurs in the second trimester after 16 weeks 50 but may occur in 1st and 3rd as wellGenerally bilateral, if unilateral it is more common on right side in more than half of the casesMost common organism responsible E. coli 70, Klebsiella 10.Complications 