N212 Pathophysiology Exam 3 Full
Detailed Study Guide | Questions and
Answers | 2026 Updated | 100% Correct -
Eastwick College.
1. Prevention of Emboli
An embolus is a blood clot or other foreign material (such as air, fat, or plaque) that
travels through the bloodstream. It can become lodged in a blood vessel, blocking
circulation and causing severe tissue damage or death. Prevention is critical, especially
for patients at risk for Deep Vein Thrombosis (DVT).
Key Prevention Measures
• Encourage active or passive range-of-motion (ROM) exercises to promote
blood flow.
• Promote early ambulation (getting the patient out of bed and walking) as soon
as it is safe.
• Reposition immobile patients frequently (at least every 2 hours).
• Use sequential compression devices (SCDs) or anti-embolism stockings if
ordered to prevent venous stasis.
• Encourage adequate hydration (unless contraindicated, e.g., in heart failure) to
prevent blood from becoming too viscous.
Critical Safety Point (🚨 High-Yield)
• Do NOT massage the legs of a patient with suspected or confirmed DVT.
Massage can dislodge the clot, causing it to travel to the lungs and result in a
life-threatening Pulmonary Embolism (PE).
,Why Prevention Matters
A dislodged embolus can travel to:
• The Lungs → Pulmonary Embolism (chest pain, sudden shortness of breath,
hemoptysis).
• The Brain → Stroke (neurological deficits, weakness, speech changes).
• Other Organs (e.g., kidneys, spleen, or limbs) → Ischemia and Infarction (tissue
death).
2. Left-Sided Heart Failure
Left-sided heart failure occurs when the left ventricle fails to pump blood effectively
out to the body. This causes blood to back up into the left atrium and then into
the pulmonary veins and lungs.
Easy Memory Trick
• L for Left = Lungs.
• Think: "Lung congestion is caused by Left-sided failure."
Pathophysiology
1. Impaired Pumping: The left ventricle cannot eject sufficient blood during systole
(or cannot relax properly during diastole to fill).
2. Increased Pressure: Blood pools in the left ventricle and left atrium, increasing
pressure.
3. Backup to Lungs: This pressure transmits backward into the pulmonary
vasculature.
4. Fluid Leakage: Increased capillary hydrostatic pressure forces fluid out of the
pulmonary capillaries into the lung interstitium and alveoli → Pulmonary Edema.
Key Signs & Symptoms (Manifestations)
• Dyspnea (shortness of breath, especially on exertion).
, • Orthopnea (difficulty breathing when lying flat; patient needs multiple pillows).
• Paroxysmal Nocturnal Dyspnea (PND) (sudden awakening at night gasping for
air).
• Crackles (rales) heard on lung auscultation (due to fluid in alveoli).
• Productive cough with pink, frothy sputum (in severe cases).
• Hypoxia and cyanosis.
• Tachycardia and restlessness.
Common Causes
• Hypertension (chronic high afterload).
• Coronary Artery Disease / Myocardial Infarction (ischemic damage).
• Valvular heart disease (e.g., aortic stenosis, mitral regurgitation).
• Cardiomyopathy.
3. Right-Sided Heart Failure
Right-sided heart failure occurs when the right ventricle fails to pump blood effectively
to the lungs. Blood backs up into the right atrium and then into the systemic venous
circulation (the rest of the body).
Easy Memory Trick
• R for Right = Rest of the body.
• Think: "Right failure causes Retention of fluid in the Rest of the body."
Pathophysiology
1. Impaired Pumping: The right ventricle cannot effectively eject blood into the
pulmonary artery.
2. Increased Pressure: Blood pools in the right ventricle and right atrium.
3. Backup to Systemic Veins: Pressure transmits backward into the venae cavae
and peripheral veins.
4. Fluid Leakage: Increased venous hydrostatic pressure forces fluid out of
capillaries into the interstitial spaces of the body → Systemic Edema.
, Key Signs & Symptoms (Manifestations)
• Peripheral Edema (swelling in feet, ankles, and legs; pitting edema).
• Jugular Venous Distention (JVD) (visible bulging neck veins).
• Hepatomegaly (enlarged, tender liver due to congestion).
• Splenomegaly (enlarged spleen).
• Ascites (fluid accumulation in the abdominal cavity).
• Weight gain (due to fluid retention).
• Anorexia and nausea (due to GI tract congestion).
• Dependent edema (worsens with standing/sitting, improves with elevation).
Common Causes
• Left-sided heart failure (most common cause – pressure backs up from the
lungs into the right heart).
• Pulmonary hypertension (increased resistance in the lungs).
• Chronic lung diseases (Cor Pulmonale – e.g., COPD, pulmonary fibrosis).
• Right ventricular myocardial infarction.
• Tricuspid or pulmonic valve disease.
Comparison Summary
Feature Left-Sided Failure Right-Sided Failure
Backup
Lungs (pulmonary circulation) Body (systemic circulation)
location
Crackles, dyspnea, orthopnea, pink frothy Peripheral edema, JVD, hepatomegal
Primary signs
sputum ascites
Memory Trick L = Lungs R = Rest of the body
4. Pulmonary Edema
Detailed Study Guide | Questions and
Answers | 2026 Updated | 100% Correct -
Eastwick College.
1. Prevention of Emboli
An embolus is a blood clot or other foreign material (such as air, fat, or plaque) that
travels through the bloodstream. It can become lodged in a blood vessel, blocking
circulation and causing severe tissue damage or death. Prevention is critical, especially
for patients at risk for Deep Vein Thrombosis (DVT).
Key Prevention Measures
• Encourage active or passive range-of-motion (ROM) exercises to promote
blood flow.
• Promote early ambulation (getting the patient out of bed and walking) as soon
as it is safe.
• Reposition immobile patients frequently (at least every 2 hours).
• Use sequential compression devices (SCDs) or anti-embolism stockings if
ordered to prevent venous stasis.
• Encourage adequate hydration (unless contraindicated, e.g., in heart failure) to
prevent blood from becoming too viscous.
Critical Safety Point (🚨 High-Yield)
• Do NOT massage the legs of a patient with suspected or confirmed DVT.
Massage can dislodge the clot, causing it to travel to the lungs and result in a
life-threatening Pulmonary Embolism (PE).
,Why Prevention Matters
A dislodged embolus can travel to:
• The Lungs → Pulmonary Embolism (chest pain, sudden shortness of breath,
hemoptysis).
• The Brain → Stroke (neurological deficits, weakness, speech changes).
• Other Organs (e.g., kidneys, spleen, or limbs) → Ischemia and Infarction (tissue
death).
2. Left-Sided Heart Failure
Left-sided heart failure occurs when the left ventricle fails to pump blood effectively
out to the body. This causes blood to back up into the left atrium and then into
the pulmonary veins and lungs.
Easy Memory Trick
• L for Left = Lungs.
• Think: "Lung congestion is caused by Left-sided failure."
Pathophysiology
1. Impaired Pumping: The left ventricle cannot eject sufficient blood during systole
(or cannot relax properly during diastole to fill).
2. Increased Pressure: Blood pools in the left ventricle and left atrium, increasing
pressure.
3. Backup to Lungs: This pressure transmits backward into the pulmonary
vasculature.
4. Fluid Leakage: Increased capillary hydrostatic pressure forces fluid out of the
pulmonary capillaries into the lung interstitium and alveoli → Pulmonary Edema.
Key Signs & Symptoms (Manifestations)
• Dyspnea (shortness of breath, especially on exertion).
, • Orthopnea (difficulty breathing when lying flat; patient needs multiple pillows).
• Paroxysmal Nocturnal Dyspnea (PND) (sudden awakening at night gasping for
air).
• Crackles (rales) heard on lung auscultation (due to fluid in alveoli).
• Productive cough with pink, frothy sputum (in severe cases).
• Hypoxia and cyanosis.
• Tachycardia and restlessness.
Common Causes
• Hypertension (chronic high afterload).
• Coronary Artery Disease / Myocardial Infarction (ischemic damage).
• Valvular heart disease (e.g., aortic stenosis, mitral regurgitation).
• Cardiomyopathy.
3. Right-Sided Heart Failure
Right-sided heart failure occurs when the right ventricle fails to pump blood effectively
to the lungs. Blood backs up into the right atrium and then into the systemic venous
circulation (the rest of the body).
Easy Memory Trick
• R for Right = Rest of the body.
• Think: "Right failure causes Retention of fluid in the Rest of the body."
Pathophysiology
1. Impaired Pumping: The right ventricle cannot effectively eject blood into the
pulmonary artery.
2. Increased Pressure: Blood pools in the right ventricle and right atrium.
3. Backup to Systemic Veins: Pressure transmits backward into the venae cavae
and peripheral veins.
4. Fluid Leakage: Increased venous hydrostatic pressure forces fluid out of
capillaries into the interstitial spaces of the body → Systemic Edema.
, Key Signs & Symptoms (Manifestations)
• Peripheral Edema (swelling in feet, ankles, and legs; pitting edema).
• Jugular Venous Distention (JVD) (visible bulging neck veins).
• Hepatomegaly (enlarged, tender liver due to congestion).
• Splenomegaly (enlarged spleen).
• Ascites (fluid accumulation in the abdominal cavity).
• Weight gain (due to fluid retention).
• Anorexia and nausea (due to GI tract congestion).
• Dependent edema (worsens with standing/sitting, improves with elevation).
Common Causes
• Left-sided heart failure (most common cause – pressure backs up from the
lungs into the right heart).
• Pulmonary hypertension (increased resistance in the lungs).
• Chronic lung diseases (Cor Pulmonale – e.g., COPD, pulmonary fibrosis).
• Right ventricular myocardial infarction.
• Tricuspid or pulmonic valve disease.
Comparison Summary
Feature Left-Sided Failure Right-Sided Failure
Backup
Lungs (pulmonary circulation) Body (systemic circulation)
location
Crackles, dyspnea, orthopnea, pink frothy Peripheral edema, JVD, hepatomegal
Primary signs
sputum ascites
Memory Trick L = Lungs R = Rest of the body
4. Pulmonary Edema
