Heart Flashcards
- Clinically the most important chamber of the heart.
A. Left Atrium
C. Left Ventricle
B. Right Atrium
D. Right Ventricle
C. Left Ventricle
Explanation: The left ventricle is responsible for pumping oxygenated blood to the entire body through the aorta. Its function is crucial for maintaining systemic circulation.
Mitral valve is closed and aortic valve is open.
A. First heart sound
C. Third heart sound
B. Second heart sound
D. Fourth heart sound
B. Second heart sound
Explanation: The second heart sound (S2) is produced when the aortic and pulmonic valves close. The mitral valve is closed during systole when the aortic valve is open.
Sound produced during opening of the aortic valve.
A. Opening Snap
C. Splitting of 1s heart sound
B. Early systolic ejection sound
D. Splitting of 2nd heart sound
B. Early systolic ejection sound
Explanation: This sound is produced by the sudden halting of the aortic valve leaflets due to rapid ejection of blood from the left ventricle.
Cardiac valve that is usually heard best in the 2nd and 3rd left interspaces close to the sternum.
A. Pulmonic valve
B. Aortic valve
C. Mitral valve
D. Tricuspid valve
A. Pulmonic valve
Explanation: The pulmonic valve is best auscultated in the 2nd left intercostal space close to the sternum.
The first heart sound is seen at the start of the
A. P wave
C. R wave
B. Q wave
D. S wave
C. R wave
Explanation: The first heart sound (S1) corresponds to the onset of the QRS complex, specifically the R wave, on an ECG.
- Refer to as the resistance against which the ventricle must contract
A.Stroke volume
C. Myocardial contractility
B. Pre load
D. After load
D. Afterload
Explanation: Afterload refers to the resistance that the ventricles must overcome to eject blood into the arteries.
The following factors influence arterial pressure, EXCEPT:
A. Right ventricular stroke volume
B. Distensibility of the aorta and large arteries
C. Viscosity of the blood
D. Peripheral vascular resistance
A. Right ventricular stroke volume
Explanation: Arterial pressure is primarily influenced by the left ventricular stroke volume, not the right.
Represent atrial relaxation
A. v wave
B. a wave
C. x descent
D. y descent
C. x descent
Explanation: The x descent on a jugular venous pulse tracing represents atrial relaxation.
- Location where innocent murmur is best heard
A. 2nd to 4” left interspaces
B. 2nd to 4” right interspaces
C. 5th intercostal space, left midclavicular line
D. 7 intercostal space, left parasternal line
A. 2nd to 4th left interspaces
Explanation: Innocent murmurs are often best heard in the 2nd to 4th left intercostal spaces.
- Isolated systolic hypertension is
A. More than 140 mmHg
B. More than 150 mmHg
C. More than 130 mmHg
D. More than 160 mmHg
A. More than 140 mmHg
Explanation: Isolated systolic hypertension is defined as a systolic blood pressure of more than 140 mmHg with a normal diastolic blood pressure.
Large V waves is usually seen in
A. Mitral regurgitation
C. Aortic regurgitation
B. Tricuspid regurgitation
D. Pulmonic regurgitation
A. Mitral regurgitation
Explanation: Large V waves in the jugular venous pulse are characteristic of mitral regurgitation.
Paradoxical pulse is usually seen in the following conditions, EXCEPT:
A. Pericardial Tamponade
C. Emphysema
B. Bronchial Asthma
D. Constrictive Pericarditis
C. Emphysema
Explanation: Paradoxical pulse (or pulsus paradoxus) is not typically associated with emphysema.
The following conditions cause accentuated first heart sound, EXCEPT:
A. Congestive Heart Failure
C. Exercise
B. Hyperthyroidism
D. Anemia
D. Anemia
Explanation: Anemia does not typically cause an accentuated first heart sound.
Fourth heart sound is normally heard in
A. Athletic Individual
C. Adolescent
B. Infant
D. Fever
B. Infant
Explanation: A fourth heart sound (S4) is normal in infants but is usually pathologic in adults.
. Totally irregularly irregular heart sound/s is/are found in:
A. Atrial fibrillation
C. Both A & B
B. Atrial flutter with varying block
D. Neither A & B
A. Atrial fibrillation
Explanation: Atrial fibrillation is characterized by an irregularly irregular rhythm.