Calcium channel blockade and uncontrolled blood pressure during phaeochromocytoma surgery

1995 ◽  
Vol 42 (3) ◽  
pp. 228-230 ◽  
Author(s):  
Jeffrey Munro ◽  
Barbara J. Hurlbert ◽  
Gary E. Hill
Keyword(s):  
Blood Pressure ◽  
Calcium Channel ◽  
Channel Blockade ◽  
Calcium Channel Blockade ◽  
Uncontrolled Blood Pressure

Central Blood Pressure Under Angiotensin and Calcium Channel Blockade

Hypertension ◽  
2009 ◽  
Vol 54 (4) ◽  
pp. 704-706 ◽  
Author(s):  
Michel E. Safar ◽  
Athanase Protogerou ◽  
Jacques Blacher
Keyword(s):  
Blood Pressure ◽  
Calcium Channel ◽  
Central Blood Pressure ◽  
Channel Blockade ◽  
Calcium Channel Blockade

The Effects of Calcium Channel Blockade on Blood Pressure and Calcium Metabolism

1989 ◽  
Vol 2 (12_Pt_1) ◽  
pp. 927-930 ◽  
Author(s):  
Lawrence M. Resnick ◽  
John P. Nicholson ◽  
John H. Laragh
Keyword(s):  
Blood Pressure ◽  
Calcium Channel ◽  
Calcium Metabolism ◽  
Channel Blockade ◽  
Calcium Channel Blockade

Calcium-channel inhibition in pheochromocytoma

1986 ◽  
Vol 113 (3) ◽  
pp. 385-390 ◽  
Author(s):  
Laurent Favre ◽  
Alain Forster ◽  
Marc Fathi ◽  
Michel B. Vallotton
Keyword(s):  
Blood Pressure ◽  
Calcium Channel ◽  
Dopamine Antagonist ◽  
Channel Blockade ◽  
Elevated Plasma ◽  
Calcium Channel Blockade ◽  
Urinary Catecholamines ◽  
Channel Inhibition ◽  
Potent Vasodilator ◽  
Catecholamine Levels

Abstract. Nifedipine, a calcium-antagonist and potent vasodilator, was tested in three patients with pheochromocytoma. In two patients who were normotensive, nifedipine prevented a rise in blood pressure but not in plasma epinephrine and norepinephrine following the iv injection of the dopamine-antagonist metoclopramide. In another patient who was hypertensive, nifedipine was as effective in lowering blood pressure as labetalol or phenoxybenzamine, and did not modify the elevated plasma and urinary catecholamines. Nifedipine appears to control hypertension in pheochromocytoma, without altering catecholamine levels, suggesting that calcium-channel blockade interferes with catecholamine vascular action but not with tumoural catecholamine release. Calcium-antagonists may be helpful in preventing the pressor complications of provocative tests used in the screening of pheochromocytoma.

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