The nurse is auscultating heart sounds on a client and hears an extra sound late in diastole, just before the S1. How should the nurse document this finding?
The third heart sound (S3)
A friction rub
The fourth heart sound (S4)
A split second heart sound S2
The Correct Answer is A
A. The third heart sound (S3):
The third heart sound (S3) is an abnormal heart sound that occurs during early diastole, immediately after S2 (the second heart sound). It is caused by the rapid filling of the ventricles and is often associated with conditions like heart failure. In heart failure, the ventricles become stiff, causing vibrations that produce the S3 sound.
B. A friction rub:
A friction rub is a high-pitched, scratchy sound heard during both systole and diastole. It is caused by the rubbing together of inflamed pericardial layers (pericarditis) and is usually heard best at the left lower sternal border. Friction rubs can indicate pericardial inflammation and are often heard in conditions such as pericarditis or after a myocardial infarction.
C. The fourth heart sound (S4):
The fourth heart sound (S4) occurs late in diastole, just before S1, and is caused by atrial contraction. It is associated with increased resistance to ventricular filling, often due to conditions like hypertension or aortic stenosis. The S4 sound is heard as a low-pitched "atrial gallop."
D. A split second heart sound S2:
The second heart sound (S2) represents the closure of the aortic and pulmonic valves. Normally, S2 has two components: A2 (aortic valve closure) and P2 (pulmonic valve closure). A split S2 occurs when A2 and P2 do not close simultaneously. A physiological split S2 is common during inspiration and occurs due to delayed closure of the pulmonic valve. An abnormal or fixed split S2 can indicate underlying heart conditions such as atrial septal defect (ASD) or right bundle branch block (RBBB).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","C","D","E"]
Explanation
A. Use of accessory muscles
Explanation: Using accessory muscles during breathing indicates increased effort to breathe, which can be a sign of respiratory distress. It suggests that the client is having difficulty breathing and is using additional muscles to aid in the process. This finding should be reported to the practitioner for further evaluation.
B. Nail bed greater than 160 degrees
Explanation: A nail bed angle greater than 160 degrees, also known as clubbing, is an abnormal finding and can be associated with chronic respiratory or cardiovascular conditions. It may indicate insufficient oxygenation and should be reported to the practitioner for evaluation.
C. Circumoral cyanosis
Explanation: Circumoral cyanosis, which is a bluish discoloration around the mouth, indicates inadequate oxygenation. It can be a sign of respiratory or cardiac problems and should be reported to the practitioner for further assessment and intervention.
D. Pursed lip breathing
Explanation: Pursed lip breathing is a technique often used by individuals with respiratory difficulties to improve oxygen exchange. However, if it's observed in a person who does not normally use this technique, it could indicate respiratory distress and should be reported to the practitioner for evaluation.
E. Anteroposterior-to-transverse diameter of 1:1
Explanation: An anteroposterior-to-transverse diameter of 1:1 (also known as barrel chest) is an abnormal finding often associated with chronic obstructive pulmonary disease (COPD). It suggests overinflation of the lungs and can impair effective breathing. This finding should be reported to the practitioner for further evaluation.
Correct Answer is B
Explanation
A. Wheezing: Wheezing is a continuous, high-pitched whistling sound usually heard during expiration. It is often associated with narrowed airways, such as in asthma or chronic obstructive pulmonary disease (COPD). Wheezing occurs due to the turbulent airflow through narrowed bronchi or bronchioles and is not typically associated with pleuritis.
B. Friction rub: Pleuritis, or inflammation of the pleura, can cause a friction rub. This sound occurs when the inflamed pleural layers rub against each other during breathing. It's a grating or rubbing sound heard on auscultation and is a hallmark sign of pleuritis.
C. Stridor: Stridor is a high-pitched, harsh sound heard during inspiration and sometimes expiration. It is often a sign of upper airway obstruction, such as in croup or anaphylaxis. Stridor results from turbulent airflow through a partially obstructed or narrowed larynx or trachea.
D. Crackles: Crackles, also known as rales, are brief, discontinuous, popping sounds heard on inspiration. They can be fine or coarse and are often associated with conditions that cause fluid or secretions in the alveoli or small airways, such as pneumonia or heart failure. Crackles are not typically associated with pleuritis.
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