(For more, see the What is being tested? section.) A hemoglobin test may be used to: Screen for, diagnose, and measure the severity of anemia (low RBCs, hemoglobin and hematocrit) or polycythemia (high RBCs, hemoglobin and hematocrit) Monitor the response to treatment of anemia or polycythemia.
Calcium channel blockers prevent calcium from entering into the heart muscle cells, and into the smooth muscle cells that cause blood vessels to constrict. This relaxing effect results in the dilation of blood vessels, and a reduced force of contraction of the heart muscle.
Beta-blockers can also block the stimulation of the heart form electrical impulses-they can control irregular heartbeats-thus lowering the activity of the heart and slowing down the heart rate. Hypertension-beta-blockers lower blood pressure by slowing down the heart rate, as well as reducing the force of the heart. Blood still gets to all parts of the body, but at reduced pressure. Glaucoma-pressure within the eyeball is reduced with beta-blocker eye drops.