Which heart sound is produced by vibrations within the heart chambers or in the major arteries from the back-and-forth flow of blood?
a. S1 and S2
b. S3 and S4
c. Murmur
d. Physiologic splitting
ANS: C
Murmurs are the sounds that are produced in the heart chambers or major arteries from the back-and-forth flow of blood. S1 and S2 are normal heart sounds. S1 is the closure of the tricuspid and mitral valves, and S2 is the closure of the pulmonic and aortic valves. S3 is a normal heart sound sometimes heard in children. S4 is rarely heard as a normal heart sound. If it is heard, medical evaluation is required. Physiologic splitting is the distinction of the two sounds in S2, which widens on inspiration. It is a significant normal finding.
You might also like to view...
A nurse is assessing clients who are at risk for acid-base imbalance. Which clients are correctly paired with the acid-base imbalance? (Select all that apply.)
a. Metabolic alkalosis - Young adult who is prescribed intravenous morphine sulfate for pain b. Metabolic acidosis - Older adult who is following a carbohydrate-free diet c. Respiratory alkalosis - Client on mechanical ventilation at a rate of 28 breaths/min d. Respiratory acidosis - Postoperative client who received 6 units of packed red blood cells e. Metabolic alkalosis - Older client prescribed antacids for gastroesophageal reflux disease
A client sustained a head injury when falling off of a ladder. While in the hospital, the client begins voiding large amounts of clear urine and states he is very thirsty
The client states that he feels weak and has had an 8-lb weight loss since admission. What should the client be tested for? A) Diabetes insipidus (DI) B) Syndrome of inappropriate antidiuretic hormone secretion (SIADH) C) Pituitary tumor D) Hypothyroidism
A patient who had a Mantoux test for tuberculosis two days ago has a 2 mm area of erythema at the site of the test. The nurse concludes that this patient's response
1. is negative. 2. is positive for tuberculosis. 3. should be followed up with a tine test. 4. is unable to determine the presence of tuberculosis.
Part of the assessment of a preterm infant includes obtaining an abdominal girth measurement. The pediatric nurse performs this assessment because the patient is at risk for ______________
Fill in the blank(s) with correct word