4.2.2 The vasculature -- 4.3 Disorders of cardiac rhythm and their treatment -- 4.3.1 Sodium channel blockers (Vaughan Williams classI) -- 4.3.2 (ß-adrenoceptor antagonists (Vaughan Williams class II) -- 4.3.3 Potassium channel blockers (Vaughan Williams class III) -- 4.3.4 Calcium channel blockers (Vaughan Williams class IV) -- 4.4 Heart failure and its treatment -- 4.4.1 Cardiac glycosides -- 4.4.2 Sympathomimetics -- 4.4.3 Phosphodiesterase inhibitors -- 4.4.4 Vasodilators -- 4.4.5 Diuretics -- 4.5 Drugs used in the treatment of angina -- 4.6 Hypotension and its treatment -- 4.7 Hypertension and its treatment -- 4.7.1 Diuretics -- 4.7.2 ß-adrenoceptor antagonists -- 4.7.3 Angiotensin-converting enzyme inhibitors -- 4.7.4 Angiotensin receptor antagonists -- 4.7.5 Calcium channel antagonists -- 4.7.6 Other peripheral vasodilators -- 4.7.7 Centrally acting antihypertensive agents -- Summary -- Revision questions -- Selected reading -- Computer-aided learning packages -- 5: Drugs affecting the blood and its composition -- 5.1 Introduction -- 5.2 Drugs acting on blood cell formation and activity -- 5.2.1 Erythrocytes -- 5.2.2 Leukocytes -- 5.3 Drugs affecting haemostasis -- 5.3.1 Antiplatelet drugs -- 5.3.2 Anticoagulant agents -- 5.3.3 Fibrinolytic agents -- 5.3.4 Antifibrinolytic agents -- 5.4 Drugs affecting plasma composition -- 5.4.1 Diuretic and antidiuretic drugs -- 5.4.2 Lipid-lowering agents -- Summary -- Revision questions -- Selected reading -- 6: The treatment of respiratory disorders -- 6.1 Introduction -- 6.2 The physiological control of respiration -- 6.2.1 Disorders of the respiratory system -- 6.3 Drugs affecting the respiratory system -- 6.3.1 Respiratory stimulants -- 6.3.2 Respiratory depressants -- 6.3.3 Surfactants -- 6.3.4 Bronchodilators -- 6.3.5 Other anti-asthmatics -- Summary -- Revision questions -- Selected reading