Angina
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Questions and Answers

Which neurotransmitter is released by sympathetic innervation in the coronary vessels?

  • Acetylcholine
  • Dopamine
  • Adrenaline
  • Noradrenaline (correct)
  • Which receptor activation in the large coronary vessels results in vasoconstriction?

  • Alpha1-adrenoceptors (correct)
  • Beta1-adrenoceptors
  • Beta2-adrenoceptors
  • Muscarinic M2 receptors
  • Which receptor activation in the smaller coronary vessels induces vasodilation?

  • Muscarinic M2 receptors
  • Alpha1-adrenoceptors
  • Beta1-adrenoceptors
  • Beta2-adrenoceptors (correct)
  • Which neurotransmitter is released by parasympathetic nerves in the heart?

    <p>Acetylcholine</p> Signup and view all the answers

    Which receptor activation slows heart rate and automaticity?

    <p>Muscarinic M2 receptors</p> Signup and view all the answers

    Which type of angina is brought on by exertion or excitement?

    <p>Classic/ Stable/ Exertional Angina</p> Signup and view all the answers

    Which of the following is a common side effect of HMG-CoA reductase inhibitors?

    <p>Insomnia</p> Signup and view all the answers

    Which of the following is the rate-limiting enzyme in cholesterol synthesis?

    <p>HMG-CoA reductase</p> Signup and view all the answers

    Which type of dyslipidaemia is characterized by high levels of cholesterol and LDL in the blood?

    <p>Type IIa</p> Signup and view all the answers

    Which of the following is contraindicated in people with cardiogenic shock, left ventricular failure, and hypotension?

    <p>Potassium channel activators</p> Signup and view all the answers

    Which lipoprotein absorbs cholesterol from broken down cells and transfers them to LDLs or VLDLs?

    <p>High density lipoproteins (HDL)</p> Signup and view all the answers

    Which lipid-lowering drug class is commonly used as an adjunct to low-fat diets to decrease plasma LDL cholesterol?

    <p>HMG-CoA reductase inhibitors</p> Signup and view all the answers

    Which type of angina is characterized by vasospasm of coronary vessels and possible atherosclerosis?

    <p>Prinzmetal's angina</p> Signup and view all the answers

    Which of the following is NOT a mechanism of nitrate relief of symptoms of angina?

    <p>Relief of coronary spasm in variant angina</p> Signup and view all the answers

    Which of the following is a possible adverse effect of nitrates?

    <p>All of the above</p> Signup and view all the answers

    Which class of drugs exerts a negative chronotropic effect and slows the heart rate, thereby decreasing oxygen consumption?

    <p>Beta-adrenoceptor antagonists</p> Signup and view all the answers

    Which of the following is NOT an adverse effect of beta-adrenoceptor antagonists?

    <p>Reflex tachycardia</p> Signup and view all the answers

    Which class of drugs is useful in unstable angina and angina at rest, and acts as calcium entry blockers?

    <p>Calcium antagonists</p> Signup and view all the answers

    Which of the following is true about the drugs used to treat Angina?

    <p>They have no effect on blood pressure</p> Signup and view all the answers

    Which of the following is true about the drugs used to treat dyslipidaemia?

    <p>They have no effect on blood pressure</p> Signup and view all the answers

    Which of the following is true about the drugs used to treat hypertension?

    <p>They decrease blood pressure</p> Signup and view all the answers

    Which of the following is true about diuretics?

    <p>They decrease blood pressure</p> Signup and view all the answers

    Which of the following is true about the drugs used to treat Heart Failure?

    <p>They decrease blood pressure</p> Signup and view all the answers

    Which of the following is true about the drugs used to treat excess blood clotting and platelet activity?

    <p>They have no effect on blood pressure</p> Signup and view all the answers

    Which one of the following drugs is known to increase the metabolism of endogenous cholesterol into bile acids in the liver?

    <p>Bile acid resins</p> Signup and view all the answers

    Which one of the following drugs is indicated for hypercholesterolemia when treatment with Statin alone is inadequate or not tolerated?

    <p>Ezetimibe</p> Signup and view all the answers

    Which one of the following drugs binds to protoprotein convertase subtilisin/kexin type 9 (PCSK9) to inhibit its activity?

    <p>PCSK9 Inhibitors</p> Signup and view all the answers

    Which one of the following drugs stimulates lipoprotein lipase, increasing the hydrolysis of triglyceride in chylomicron and VLDL particles?

    <p>Fibrates</p> Signup and view all the answers

    Which one of the following drugs decreases hepatic lipoprotein synthesis and inhibits hepatic triglyceride production and VLDL secretion?

    <p>Nicotinic acid</p> Signup and view all the answers

    Which one of the following dietary components has been demonstrated to reduce the absorption of cholesterol?

    <p>Dietary plant sterol</p> Signup and view all the answers

    Unstable Angina is characterized by pain at rest.

    <p>True</p> Signup and view all the answers

    Nitrates induce peripheral vasoconstriction.

    <p>False</p> Signup and view all the answers

    The liberation of NO from organic nitrates requires an enzymic reaction that involves tissue SH groups.

    <p>True</p> Signup and view all the answers

    Long-acting nitrates are taken once daily for prophylaxis.

    <p>True</p> Signup and view all the answers

    Beta-adrenoceptor antagonists are useful in the treatment of vasospastic angina.

    <p>False</p> Signup and view all the answers

    Calcium antagonists have no effect on intracellular actions.

    <p>False</p> Signup and view all the answers

    True or false: The myocardium accounts for 4% of the cardiac output.

    <p>True</p> Signup and view all the answers

    True or false: Diastole is shortened during tachycardia, reducing the time available for myocardial perfusion.

    <p>True</p> Signup and view all the answers

    True or false: A decrease in arterial PO2 and pH results in the release of vasodilator compounds.

    <p>True</p> Signup and view all the answers

    True or false: Adenosine is a vasoconstrictor.

    <p>False</p> Signup and view all the answers

    True or false: HMG-CoA reductase inhibitors decrease hepatic lipoprotein synthesis.

    <p>True</p> Signup and view all the answers

    True or false: PCSK9 inhibitors inhibit the activity of protoprotein convertase subtilisin/kexin type 9.

    <p>True</p> Signup and view all the answers

    True or false: Stimulation of α1-adrenoceptors in large coronary vessels results in vasoconstriction?

    <p>True</p> Signup and view all the answers

    True or false: Stimulation of β2-adrenoceptors in smaller coronary vessels induces vasodilation?

    <p>True</p> Signup and view all the answers

    True or false: Noradrenaline increases heart rate and force of contraction?

    <p>True</p> Signup and view all the answers

    True or false: Stimulation of β1-adrenoceptors increases Ca2+ sensitivity of contractile machinery?

    <p>True</p> Signup and view all the answers

    True or false: Parasympathetic nerves release acetylcholine, which slows heart rate and automaticity?

    <p>True</p> Signup and view all the answers

    True or false: Angina occurs when the oxygen supply to the myocardium is insufficient for its needs?

    <p>True</p> Signup and view all the answers

    True or false: Bile acid resins prevent the reabsorption and enterohepatic circulation of bile acids in the liver?

    <p>True</p> Signup and view all the answers

    True or false: Ezetimibe inhibits the absorption of fat soluble vitamins and triglycerides from the gastrointestinal tract?

    <p>False</p> Signup and view all the answers

    True or false: PCSK9 inhibitors increase LDL clearance from the blood?

    <p>True</p> Signup and view all the answers

    True or false: Fibrates decrease plasma LDL levels by 10%?

    <p>False</p> Signup and view all the answers

    True or false: Nicotinic acid decreases hepatic triglyceride production and VLDL secretion?

    <p>True</p> Signup and view all the answers

    True or false: Fish oils decrease the production of VLDL triglycerides but may increase cholesterol levels?

    <p>True</p> Signup and view all the answers

    True or false: Potassium channel activators are contraindicated in people with left ventricular failure?

    <p>True</p> Signup and view all the answers

    True or false: Chylomicrons transport cholesterol and triglycerides from the liver to tissues?

    <p>False</p> Signup and view all the answers

    True or false: Type IIa dyslipidaemia is characterized by high levels of VLDL and LDL in the blood?

    <p>False</p> Signup and view all the answers

    True or false: HMG-CoA reductase inhibitors inhibit cholesterol production by converting HMG-CoA to mevalonic acid?

    <p>True</p> Signup and view all the answers

    True or false: Statins can improve endothelial function and reduce vascular inflammation?

    <p>True</p> Signup and view all the answers

    True or false: Rhabdomyolysis is a rare side effect of HMG-CoA reductase inhibitors?

    <p>True</p> Signup and view all the answers

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