Paramedic Science: Circulatory System Quiz

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Questions and Answers

Where is chest discomfort typically located?

  • Around the ankles
  • Only in the left arm
  • In the centre or left side of the chest (correct)
  • Exclusively in the stomach area

What is a common symptom of heart failure?

  • Improved cardiac output
  • Shortness of breath (correct)
  • Increased appetite
  • Frequent urination

What is a consequence of left ventricular failure?

  • Fluid entering the alveoli (correct)
  • Increased blood flow to the heart muscle
  • Improved gas exchange
  • Decreased pressure in the pulmonary vasculature

How is right heart failure primarily caused?

<p>By left heart failure (A)</p> Signup and view all the answers

What does an increase in pressure in the pulmonary vasculature lead to?

<p>Right ventricular afterload increase (D)</p> Signup and view all the answers

Which class of edema is characterized by a 6mm deep pit and a rebound time of 10-12 seconds?

<p>Class 3 (C)</p> Signup and view all the answers

What condition may cause fluid buildup in the lungs due to heart failure?

<p>Coronary artery disease (B)</p> Signup and view all the answers

What is a potential symptom of right heart failure?

<p>Raised jugular venous pressure (B)</p> Signup and view all the answers

What is a common symptom of symptomatic bradycardia?

<p>Light-headedness (C)</p> Signup and view all the answers

Which treatment is recommended for symptomatic bradycardia?

<p>Rapid transportation to hospital (D)</p> Signup and view all the answers

What does 'melena' refer to?

<p>Tarry black stools (C)</p> Signup and view all the answers

Which of the following is NOT a sign of sickle cell disease?

<p>Skin bruising (A)</p> Signup and view all the answers

What is the term for coughing up blood from the lungs?

<p>Haemoptysis (B)</p> Signup and view all the answers

What is the primary cause of Takotsubo cardiomyopathy?

<p>Intense emotional or physical experience (B)</p> Signup and view all the answers

What is one key feature of the heart's shape in Takotsubo cardiomyopathy?

<p>It changes to a Tako-Tsubo pot shape (A)</p> Signup and view all the answers

For whom is a Left Ventricular Assist Device (LVAD) typically used?

<p>Patients with severe heart failure (D)</p> Signup and view all the answers

What is a significant risk associated with an aortic dissection?

<p>Potentially deadly complications if untreated (A)</p> Signup and view all the answers

Which type of aortic dissection involves both the ascending and descending aorta?

<p>Type I (C)</p> Signup and view all the answers

What is a key function of the Left Ventricular Assist Device (LVAD)?

<p>To assist and restore normal blood flow (D)</p> Signup and view all the answers

What complication arises from an aortic dissection?

<p>Inner and middle layers of the aorta split (D)</p> Signup and view all the answers

Which guideline should be followed for managing patients with Left Ventricular Assist Devices (LVADs)?

<p>JRCALC guideline management (A)</p> Signup and view all the answers

What characterizes a Type A aortic dissection?

<p>It involves the ascending aorta. (B)</p> Signup and view all the answers

Which symptom is NOT typically associated with an aortic dissection?

<p>Pulsatile mass in the abdomen. (A)</p> Signup and view all the answers

Which type of abdominal aortic aneurysm (AAA) symptom indicates a possible rupture?

<p>Mottling of the abdomen. (C)</p> Signup and view all the answers

What is the proper guideline to follow for vascular emergencies?

<p>JRCALC Vascular Emergencies Guideline. (D)</p> Signup and view all the answers

In an arteriovenous fistula, what happens to the blood flow?

<p>Blood flows from an artery directly into a vein. (D)</p> Signup and view all the answers

Which of the following is a sign of an abdominal aortic aneurysm?

<p>Sudden severe stomach pain. (D)</p> Signup and view all the answers

Which symptom might suggest an impending stroke associated with aortic dissection?

<p>Weakness or loss of movement on one side. (B)</p> Signup and view all the answers

Which of the following is a common symptom of an arteriovenous fistula?

<p>Reduced blood supply to nearby tissues. (B)</p> Signup and view all the answers

What is the primary role of pulmonary circulation?

<p>To transport deoxygenated blood to the lungs (D)</p> Signup and view all the answers

Which structure does blood enter immediately after passing through the bicuspid valve?

<p>Left Ventricle (A)</p> Signup and view all the answers

What causes angina pectoris?

<p>Narrowing or blockage of the heart's arteries (A)</p> Signup and view all the answers

What is atherosclerosis primarily characterized by?

<p>Plaque buildup in artery walls (D)</p> Signup and view all the answers

Which part of the heart receives oxygenated blood from the pulmonary veins?

<p>Left Atrium (B)</p> Signup and view all the answers

What is the function of coronary circulation?

<p>To supply blood to the heart muscle (A)</p> Signup and view all the answers

The electrical conduction system of the heart is important for what purpose?

<p>Allowing for synchronized heart contractions (A)</p> Signup and view all the answers

Which of the following statements is true about systemic circulation?

<p>It provides functional blood supply to all body tissues. (D)</p> Signup and view all the answers

What characterizes unstable angina?

<p>Irregular and can happen at rest (C)</p> Signup and view all the answers

Which symptom is most commonly associated with acute coronary syndromes?

<p>Severe pain in the chest or other areas (B)</p> Signup and view all the answers

What differentiates a STEMI from a NSTEMI?

<p>ST elevation observed in the ECG for STEMI only (A)</p> Signup and view all the answers

What is a hallmark symptom of a Silent Myocardial Infarction?

<p>No symptoms or symptoms not recognized as a heart attack (B)</p> Signup and view all the answers

What indicates the need for treatment following the JRCALC Acute Coronary Syndrome Guideline?

<p>Symptoms consistent with unstable angina or myocardial infarction (D)</p> Signup and view all the answers

What is the underlying cause of both STEMI and NSTEMI?

<p>Long interruption to the blood supply due to total blockage (C)</p> Signup and view all the answers

Which of the following symptoms could occur during a myocardial infarction?

<p>Sudden dizziness or faintness (A)</p> Signup and view all the answers

What is often the first and most obvious symptom of a STEMI?

<p>Chest discomfort, pain or pressure (A)</p> Signup and view all the answers

Flashcards

Pulmonary Circulation

Blood flow between the heart and lungs. It takes deoxygenated blood to the lungs to pick up oxygen and release carbon dioxide.

Systemic Circulation

Blood flow to all body tissues, delivering oxygen and nutrients, and removing carbon dioxide and waste.

Coronary Circulation

Blood flow to the heart muscle itself. Supplies oxygenated blood and removes deoxygenated blood.

Angina Pectoris

Chest pain due to narrowed or blocked coronary arteries, reducing blood flow to the heart muscle (ischemia).

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Atherosclerosis

Build-up of fats, cholesterol, and other substances in artery walls (plaque), narrowing the arteries and reducing blood flow.

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Left Atrium

The heart chamber that receives oxygenated blood from the lungs.

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Left Ventricle

The heart chamber that pumps oxygenated blood out to the body.

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Bicuspid Valve

Valve between the left atrium and left ventricle, allowing one-way flow of blood.

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Stable Angina

Predictable chest pain due to heart muscle needing more oxygen than it's getting, usually triggered by exertion and relieved by rest or vasodilators.

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Unstable Angina

Irregular, unpredictable chest pain, often occurring at rest, and is a worsening of heart health potentially leading to a heart attack.

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STEMI

Severe heart attack caused by a complete blockage in a coronary artery, leading to extensive heart damage.

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NSTEMI

Heart attack with reduced blood flow, like a STEMI, but lacking ST elevation on an ECG.

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Silent MI

Heart attack with minimal or unrecognized symptoms, but detectable on an ECG.

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Acute Coronary Syndrome (ACS)

A group of conditions involving reduced blood flow to the heart, including unstable angina, NSTEMI, and STEMI.

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MI symptoms

Chest discomfort, pain, or pressure, often described as heaviness, tightness, or constriction.

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Plaque rupture

A plaque rupture is when a plaque in a coronary artery bursts, leading to blood clot formation.

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Takotsubo Cardiomyopathy

A temporary heart condition caused by intense stress, affecting the heart's ability to pump blood effectively. The heart's main chamber changes shape, resembling a Japanese octopus trap.

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LVAD

A left ventricular assist device, an artificial heart pump used for severe heart failure. It assists the weakened heart in pumping blood throughout the body.

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Aortic Dissection

A serious condition where a tear occurs in the aorta's inner layer, causing blood to flow through the tear and split the aorta's layers. This can be life-threatening.

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DeBakey Classification Type I

Aortic dissection originating in the ascending aorta and extending to the descending aorta.

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DeBakey Classification Type II

Aortic dissection affecting only the ascending aorta.

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DeBakey Classification Type III

Aortic dissection affecting only the descending aorta, distal to the subclavian artery.

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Chest Pain Location

Angina pain can occur in the center or left side of the chest, but also in the jaw, neck, back, arms, or upper stomach. It can even be felt only in these secondary locations.

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Angina Symptoms

Besides chest pain, angina can cause shortness of breath, fatigue, dizziness, cold sweats, nausea, and vomiting.

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Heart Failure

A condition where the heart muscle weakens, preventing it from pumping blood effectively. This can lead to fluid buildup, especially in the lungs.

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Heart Failure Causes

Narrowed arteries (coronary artery disease) and high blood pressure can damage the heart, causing it to become weak or stiff, hindering its ability to pump blood effectively.

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Left Ventricular Failure

The most common type of heart failure caused by a previous heart attack. The left ventricle contracts poorly, leading to blood backing up into the lungs.

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Pulmonary Edema

Fluid buildup within the alveoli (tiny air sacs) in the lungs due to increased pressure in the pulmonary veins, causing reduced gas exchange.

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Right Ventricular Failure

Can be caused by left ventricular failure or lung diseases like COPD or pulmonary embolism. It involves an increase in pressure in the pulmonary veins leading to right ventricular failure, causing symptoms like leg swelling and enlarged liver.

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Oedema Classification

Oedema (swelling) is classified based on the depth of the indentation left by pressing on the swollen area, ranging from 2mm to 8mm with varying rebound times.

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Sickle Cell Disease

A genetic disorder where red blood cells become sickle-shaped, blocking blood flow and causing pain, fatigue, and infections.

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Symptomatic Bradycardia

A slow heart rate that causes noticeable symptoms like dizziness, fainting, and chest pain.

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Haematemesis

Vomiting blood, which might look red or like coffee grounds.

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Melena

Passage of black, tarry stools due to digested blood.

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Haematochezia

Passage of bright red blood with or in the stool.

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Aortic Dissection: Type A

Involves the ascending aorta, the part closest to the heart.

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Aortic Dissection: Type B

Affects the descending aorta, the part below the left subclavian artery.

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Abdominal Aortic Aneurysm (AAA)

A bulge or weakened area in the aorta, the major artery in the abdomen.

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AAA Symptoms: Sudden, Severe Pain

Intense pain in the stomach or lower back, often a sign of a ruptured aneurysm.

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AAA Symptoms: Pulsatile Mass

A throbbing or pulsating mass in the abdomen, felt with the hand.

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Arteriovenous Fistula (AV Fistula)

An abnormal connection between an artery and a vein, causing blood to bypass some capillaries.

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AV Fistula: Reduced blood flow

Tissues below the bypassed capillaries receive less blood, potentially leading to complications.

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AV Fistula: Haemorrhage

Bleeding from an AV fistula can be a serious complication.

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Study Notes

Paramedic Science: Health & Human Development 2 - The Circulatory System

  • The circulatory system comprises vessels that carry blood to and from the heart.
  • Arteries carry blood away from the heart.
  • Veins carry blood towards the heart.
  • The system is unidirectional.
  • The heart, roughly the size of a fist, is located in the centre of the chest, slightly to the left.
  • The heart pumps blood throughout the body, delivering oxygen and nutrients and removing carbon dioxide and waste products.

Structure of the Heart

  • The heart wall has three layers:
    • Pericardium (double-walled sac):
      • Parietal pericardium (outer layer)
      • Visceral pericardium (inner layer, also known as the epicardium)
    • Myocardium (muscular layer)
    • Endocardium (inner layer lining the heart chambers and valves)
  • The myocardium is made of cardiac muscle tissue arranged in planes and richly supplied with blood, lymph, and nerve tissue. It pumps blood from the heart chambers.
  • The endocardium lines the heart chambers and covers the heart valves.

Heart Chambers

  • The heart is divided into four chambers:
    • Right atrium
    • Right ventricle
    • Left atrium
    • Left ventricle

Pulmonary Circulation

  • Blood travels between the heart and lungs.
  • Deoxygenated blood is carried to the lungs to absorb oxygen and release carbon dioxide.
  • Oxygenated blood returns to the heart.

Systemic Circulation

  • Blood is circulated throughout the body.
  • Oxygenated blood delivers oxygen and nutrients to body tissues.
  • Deoxygenated blood collects carbon dioxide and waste products.

Electrical Conduction System

  • Specialized electrical system enables synchronous contraction of heart chambers. It coordinates sequential contraction of atria and ventricles.

  • The system includes the SA (sinoatrial) node, AV (atrioventricular) node, Bachmann's bundle, internodal tracts, bundles of His, and Purkinje fibers.

Coronary Circulation

  • Coronary vessels supply oxygenated blood to the heart muscle.
  • Cardiac veins drain away deoxygenated blood.

Pathophysiology

  • Angina: Chest pain or discomfort due to insufficient blood flow to the heart muscle (often related to coronary heart disease).
  • Atherosclerosis: Buildup of fats, cholesterol, and other substances in artery walls (plaque), which can narrow arteries, block blood flow, or burst to cause a blood clot.
  • Stable Angina: Predictable chest pain that occurs with exertion.
  • Unstable Angina: Irregular, unpredictable chest pain, sometimes occurring at rest. Can be an escalation of stable angina.
  • ST-Elevation Myocardial Infarction (STEMI): Serious heart attack characterized by a prolonged interruption of blood supply (caused by total blockage of a coronary artery) which can cause extensive damage.
  • Non-ST-Elevation Myocardial Infarction (NSTEMI): Heart attack without a clear block in the ECG; typically no ST elevation.
  • Silent Myocardial Infarction (Silent MI): Heart attack with few or no noticeable symptoms.
  • Heart Failure: Heart doesn't pump blood effectively; blood pools leading to fluid build up in tissues, especially lungs.
  • Left Ventricular Assist Device (LVAD): Mechanical pump device used for failing hearts before/until transplant.
  • Aortic Dissection: Tear in the inner lining of the aorta that can cause the layers to split (dissect).
  • Abdominal Aortic Aneurysm (AAA): A weakened, enlarged area in the aorta (usually in the abdomen).
  • Arteriovenous Fistula (AVF) Haemorrhage: An irregular connection between an artery and vein, diverting blood away from the capillaries, reducing blood supply to tissues.
  • Pericarditis: Swelling and inflammation of the pericardium (the sac surrounding the heart), often causing sharp chest pain.
  • Cocaine Toxicity: Rapid cardiovascular and neurological deterioration due to stimulant drug use.

Treatment

  • Specific guidelines from JRCALC are followed for each condition.

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