TABLE 22-28
| TABLE 22-28. MORE INTENSIVE INVESTIGATIONS | |
| INVESTIGATION | RELEVANCE |
Electrocardiogram, echocardiogram | Left ventricular hypertrophy |
Renal ultrasound | Renal anomalies, hydronephrosis, renal scars, Wilms tumor, neuroblastoma |
Renal Doppler ultrasound, MRI | Renal artery stenosis |
Plasma renin concentration | Increased in renal artery stenosis; decreased in primary hyperaldosteronism, dexamethasone-suppressible hypertension |
Plasma aldosterone concentration | Increased in renal artery stenosis, primary hyperaldosteronism, dexamethasone-suppressible hypertension |
Plasma deoxycorticosterone | Increased in congenital adrenal hyperplasia |
Urinary steroids | Apparent mineralocorticoid excess, congenital adrenal hyperplasia |
Urinary catecholamines, metanephrines, VMA | Pheochromocytoma, neuroblastoma |
Dimercaptosuccinic acid (DMSA) scan | Chronic pyelonephritis |
Captopril renal scan | Renal artery stenosis |
Renal arteriogram | Renal artery stenosis |