Ischaemic Heart Disease and Arrhythmias Quiz
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Questions and Answers

Name three causes of myocardial ischemia.

Atherosclerosis, blood clot, coronary artery spasm

What are the microscopic features of an atheroma?

Unknown

Differentiate between stable angina and unstable angina.

Stable angina occurs during exertion, while unstable angina can occur at rest with no pathological ECG changes or biomarker changes

What are the clinical features of an acute coronary syndrome?

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

How do we categorize arrhythmias?

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

Define supraventricular tachycardia and explain its origin.

<p>Supraventricular tachycardia is a type of arrhythmia that originates above the bundle of His. It is characterized by a fast heart rate and usually has narrow complexes.</p> Signup and view all the answers

What is the treatment for atrial fibrillation?

<p>The treatment for atrial fibrillation can either focus on converting the heart rhythm to normal or controlling the ventricular rate.</p> Signup and view all the answers

What is the difference between Mobitz Type 1 and Mobitz Type 2 AV block?

<p>Mobitz Type 1 AV block is characterized by a progressive prolongation of the PR interval followed by a dropped beat and reset. Mobitz Type 2 AV block, on the other hand, has a fixed ratio and is more likely to be problematic.</p> Signup and view all the answers

What is the clinical significance of long QTc and Torsades de pointes?

<p>Long QTc can be related to certain medications mixed with electrolyte imbalance. Torsades de pointes is a specific type of polymorphic ventricular tachycardia that can be treated with intravenous magnesium.</p> Signup and view all the answers

When is pulseless ventricular tachycardia (VT) treated as cardiac arrest?

<p>Pulseless VT is treated as cardiac arrest and requires immediate intervention and resuscitation.</p> Signup and view all the answers

What is echocardiography?

<p>Echocardiography is the use of ultrasound to examine the heart.</p> Signup and view all the answers

What is the impact of echocardiography in the field of cardiology?

<p>Echocardiography has been one of the most dramatic revolutions in the field of cardiology in the last 100 years.</p> Signup and view all the answers

What is the role of echocardiography in Point of Care Ultrasound?

<p>Echocardiography plays a role in Point of Care Ultrasound, particularly in the settings of anaesthesia, resuscitation, and paediatric cardiology.</p> Signup and view all the answers

What is the purpose of the m-mode in echocardiography?

<p>The m-mode is designed to document and analyze tissue motion.</p> Signup and view all the answers

What does basic echo in the resuscitation setting aim to answer?

<p>Basic echo in the resuscitation setting aims to answer focused clinical yes/no questions.</p> Signup and view all the answers

What are the cardiovascular complications of Marfan's Syndrome?

<p>Cardiovascular complications of Marfan's Syndrome include dilatation of ascending and sometimes descending aorta, incompetence of aortic and mitral valves, aneurysm and dissection of aorta.</p> Signup and view all the answers

Why is echocardiography considered a critical tool in the care of patients with known or suspected cardiovascular disease?

<p>The detailed cardiac structural and functional information that echocardiography provides, coupled with its portability and lack of ionizing radiation, has established this imaging modality as a critical tool in the care of patients with known or suspected cardiovascular disease.</p> Signup and view all the answers

What are the advantages and disadvantages of echocardiography?

<p>Advantages of echocardiography include providing meticulous facts on cardiac structure and function, including the size and shape of cardiac chambers, the morphology of cardiac valves, and systolic and diastolic function. It also provides information on intra-cardiac hemodynamics. Disadvantages of echocardiography include the dependence on ultrasound waves, which may have limitations in penetrating deeply into tissues, and the need for skilled operators to interpret the images.</p> Signup and view all the answers

What are the different types of transducers/probes used in echocardiography?

<p>The different types of transducers/probes used in echocardiography are linear-array transducers, curved-array transducers, and phased-array transducers. Linear-array transducers produce images with a flat superficial surface, curved-array transducers produce images with a curved superficial surface, and phased-array transducers produce sector images by steering sound beams at varying angles.</p> Signup and view all the answers

What are the manipulation maneuvers for ultrasound probe during echocardiography?

<p>The manipulation maneuvers for ultrasound probe during echocardiography are Pressure, Alignment (movement), Rotation, and Tilting (fanning), also known as PART.</p> Signup and view all the answers

What are the indications for intravenous therapy?

<p>Medicine is not available in another form, Cannot tolerate medication by another route, Constant or high blood level of medicine is needed, A rapid onset of effect is needed, Some medications are more effective via IV, Rarely, to ensure compliance</p> Signup and view all the answers

What are the disadvantages of intravenous administration?

<p>Increased cost and time to administer the medicine, Requires trained staff to administer (plus location), Rapid onset of action, Volume of fluid needed to dilute the medicine, Can cause discomfort/pain to the patient, Health risks (e.g. infection), When the oral route can be used, it should be used</p> Signup and view all the answers

What are the types of intravascular devices (IVDs) that may be used for intravenous drug administration?

<p>Peripheral venous catheters, Central venous catheters (CVCs) - Peripherally inserted CVCs - Skin-tunneled CVCs</p> Signup and view all the answers

What are the hazards and complications of intravenous therapy?

<p>Infection, Phlebitis, Extravasation, Air embolism, Catheter-related bloodstream infection, Thrombosis</p> Signup and view all the answers

What are the basic pharmacokinetic parameters that can affect the plasma concentration of IV drugs?

<p>Clearance, Volume of distribution, Half-life, Bioavailability</p> Signup and view all the answers

What are the potential hazards and complications of intravenous therapy?

<p>Complications of IV drug administration include fear/phobia/pain, infection/sepsis, thrombophlebitis, extravasation/infiltration, emboli, anaphylaxis/hypersensitivity, overdose, and visual infusion phlebitis score.</p> Signup and view all the answers

How can the incidence of Red Man Syndrome be reduced when using Vancomycin?

<p>The incidence of Red Man Syndrome can be reduced by slowing the infusion rate and using a more dilute drug solution.</p> Signup and view all the answers

What factors affect the stability of medicines in solution?

<p>Factors that affect the stability of medicines in solution include light, temperature, concentration, and pH.</p> Signup and view all the answers

What is bioavailability and how does IV injection affect it?

<p>Bioavailability is the fraction of unchanged drug that reaches the systemic circulation. IV injection gives 100% bioavailability.</p> Signup and view all the answers

What is clearance and how does it relate to plasma drug concentration during IV infusion?

<p>Clearance is defined as the volume of blood or plasma cleared of drug in a unit time. During IV infusion, the plasma drug concentration increases until the rate of input equals the rate of output, reaching a steady state concentration.</p> Signup and view all the answers

What are the contraindications for intravenous drug therapy?

<p>Medicine is available in another form, medication cannot be tolerated by another route, constant or high blood level of medicine is not needed, a rapid onset of effect is not needed, medications are not more effective via IV, and the oral route can be used.</p> Signup and view all the answers

What are the risks associated with intravenous drug therapy?

<p>Increased cost and time to administer the medicine, requires trained staff to administer, rapid onset of action, volume of fluid needed to dilute the medicine, discomfort/pain to the patient, and health risks such as infection.</p> Signup and view all the answers

What are the types of intravascular devices (IVDs) that may be used for intravenous drug administration?

<p>Peripheral venous catheters and central venous catheters (including peripherally inserted CVCs and skin-tunneled CVCs).</p> Signup and view all the answers

What are the advantages of intravenous drug therapy?

<p>Medicine is not available in another form, medication cannot be tolerated by another route, constant or high blood level of medicine is needed, a rapid onset of effect is needed, some medications are more effective via IV, and to ensure compliance.</p> Signup and view all the answers

What are the guidelines for the safe administration of intravenous drugs?

<p>Ensure medicine is not available in another form, medication cannot be tolerated by another route, constant or high blood level of medicine is needed, a rapid onset of effect is needed, some medications are more effective via IV, and to ensure compliance.</p> Signup and view all the answers

What are the potential hazards and complications of intravenous therapy?

<p>Fear / Phobia / Pain, Infection / Sepsis, Thrombophlebitis, Extravasation / Infiltration, Emboli, Anaphylaxis / Hypersensitivity, Overdose, Visual infusion phlebitis score (1-5), Red man syndrome</p> Signup and view all the answers

What is the impact of varying basic pharmacokinetic parameters on plasma drug concentrations during IV infusion?

<p>The graph of plasma concentration against time would be a straight line if the drug is infused at a constant rate and no drug is removed from the body. However, if the drug is being eliminated from the body as soon as it is in the circulation, the graph will bend towards a plateau when the rate of drug in equals the rate of drug out.</p> Signup and view all the answers

What is the definition of clearance in pharmacokinetics?

<p>Clearance (CL) is defined as the volume of blood or plasma cleared of drug in a unit time.</p> Signup and view all the answers

What factors affect the stability of medicines in solution?

<p>Light, Temperature, Concentration, pH, Interaction with the syringe/bag</p> Signup and view all the answers

What are the types of intravascular devices (IVDs) that may be used for intravenous drug administration?

<p>Hickman and Broviac lines, Arterial catheters, Syringes, bags, pumps and drivers</p> Signup and view all the answers

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