N	Concordance
1	teral colic. The decision to perform an IVP may be dictated by symptoms that per
2	s, ureters, and bladder on an x-ray. An IVP normally causes little discomfort, a
3	 ultrasounds and intravenous pyelograms (IVP) were evaluated for hydronephrosis 
4	   who received intravenous pyelography (IVP) were divided into 3 groups       
5	the 40 patients enrolled in the routine IVP group, 26 had positive studies, 8 of
6	41 patients randomized to the selective IVP group, there were only 19 IVPs perfo
7	served, and released without undergoing IVP unless they experienced continued sy
8	ions for an inpatient excretory urogram (IVP) and/or sonogram when the procedure