Among 240 consecutive @entity1 subjected to total hip replacement, 206 underwent perfusion scintigraphy in screening for @entity1151 10 to 14 days after surgery. All @entity1 with perfusion abnormalities (n = 77) also underwent ventilation scintigraphy with a dry 99Tcm microaerosol. The @entity854 were classified according to a detailed coding system and in 50 @entity1 pulmonary angiography was performed within 24 hours for correlation. Emboli were diagnosed in 19 @entity1 at angiography. All @entity1 with ventilated segmental (n = 6) or larger (n = 5) perfusion defects or multiple subsegmental defects larger than half a segment (n = 2) had emboli. Two of 8 @entity1 with abnormally ventilated subsegmental perfusion defects larger than half a segment had emboli. Four of 21 @entity1 with wedge-shaped subsegmental perfusion defects smaller than half a segment or defects with a rounded border towards the hilum and a peripheral extension equal to or less than that of a segment had emboli. In one of them the site of the emboli correlated to the site of the perfusion defect but occurred in normally perfused areas in the remaining 3. Ventilation scintigraphy was of no value in this group of @entity1 . No emboli were found in @entity1 who had areas with decreased but not totally lost perfusion (n = 8). No emboli were diagnosed in 27 lungs with a normal perfusion.

Angiographic evaluation of XXXX in screening for @entity1151 after total hip replacement.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity854 :: ('MESH:D018376', 'Disease') :: ['scintigraphic abnormalities'] @entity1151 :: ('MESH:D011655', 'Disease') :: ['pulmonary embolism']
@entity854 :: (MESH:D018376,Disease) :: ['scintigraphic abnormalities']
