An FBC not only tests for disorders and abnormalities of the blood but, as blood travels throughout the whole body, it can give an indication of disease present in other organs. An FBC, as the name suggests, is used to obtain a count of the blood cells in the sample of blood taken.
Flecainide is a sodium channel blocker used mainly in the treatment of supraventricular arrhythmias. Central nervous system side effects such as dizziness, visual disturbances, headache and nausea are commonly associated with flecainide, but severe central nervous system toxicity is rare.
Other calcium channel blockers in the DHP class include nifedipine (Procardia, Adalat), amlodipine (Norvasc), felodipine (Plendil), nicardipine (Cardene), and isradipine (Dynacirc). Calcium channel blockers prevent calcium from entering certain types of muscle cells. Since the muscle cells need calcium to contract, CCBs prevent the cells from contracting, that is, they cause the muscle cells to relax. Nisoldipine selectively relaxes the muscles of small arteries causing the arteries to dilate but has little or no effect on muscles of veins or the heart.