Biomaterial Database

Constant pressure flow-controlled antegrade pyelography. 1982

R Vela-Navarrete

Flow-controlled antegrade pyelography is performed by perfusion of contrast dye after transcutaneous puncture of the renal cavities. The procedure enables excellent visualization in cases of upper tract dilatation, when the result of high-dosis excretory urography is not satisfactory. Flow-controlled antegrade pyelography under constant pressure provides urodynamic support to pyelography because the flow rate is known during the procedure, facilitating the interpretation of the relation dilatation and flow in cases of upper tract equivocal obstruction. Perfusion under constant pressure enables the recognition of the resistance to flow of the pyeloureteral tract in a simple manner.

UI	MeSH Term	Description	Entries
D011312	Pressure	A type of stress exerted uniformly in all directions. Its measure is the force exerted per unit area. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)	Pressures
D004108	Dilatation, Pathologic	The condition of an anatomical structure's being dilated beyond normal dimensions.	Ectasia,Dilatation, Pathological,Dilatations, Pathologic,Dilatations, Pathological,Pathologic Dilatation,Pathologic Dilatations,Pathological Dilatation,Pathological Dilatations
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D006869	Hydronephrosis	Abnormal enlargement or swelling of a KIDNEY due to dilation of the KIDNEY CALICES and the KIDNEY PELVIS. It is often associated with obstruction of the URETER or chronic kidney diseases that prevents normal drainage of urine into the URINARY BLADDER.	Hydronephroses
D014517	Ureteral Obstruction	Blockage in any part of the URETER causing obstruction of urine flow from the kidney to the URINARY BLADDER. The obstruction may be congenital, acquired, unilateral, bilateral, complete, partial, acute, or chronic. Depending on the degree and duration of the obstruction, clinical features vary greatly such as HYDRONEPHROSIS and obstructive nephropathy.	Obstruction, Ureteral,Obstructions, Ureteral,Ureteral Obstructions
D014563	Urodynamics	The mechanical laws of fluid dynamics as they apply to urine transport.	Urodynamic
D014567	Urography	Radiography of any part of the URINARY TRACT.	Pyelography,Pyelogram,Urogram,Pyelograms,Pyelographies,Urograms,Urographies