25 !
a baby's first breath initiates a series of changes that includes which of the following?

a. the ductus venosus and ductus arteriosus both open.
b. the ductus venosus and ductus arteriosus both close.
c. the ductus venosus opens, and the ductus arteriosus closes.
d. the ductus venosus closes, and the ductus arteriosus opens.

A74-year-old woman, who has been followed for the past 25 years for chronic obstructive pulmonary disease comes to the ed complaining of 48 hours of temperature to 38.6 c and worsening shortness of breath. she has a chronic productive cough, which has become more copious. on physical examination, she has rhonchi and increased fremitus in the posterior mid-lung field. a gram's stain reveals many epithelial cells and multiple gram-positive and gram-negative organisms; no neutrophils are seen. which of the following is the most likely organism causing the symptoms? - escherichia coli- haemophilus influenzae- klebsiella pneumoniae- mycobacterium tuberculosis- mycoplasma pneumoniae