Final answer:
A widened pulse pressure, diastolic decrescendo murmur at the left sternal border, and water-hammer pulse are clinical findings associated with aortic regurgitation.
Step-by-step explanation:
A widened pulse pressure, diastolic decrescendo murmur at the left sternal border (LSB), and a water-hammer pulse are clinical findings that can be associated with aortic regurgitation.
A widened pulse pressure refers to an increased difference between the systolic and diastolic blood pressure. A diastolic decrescendo murmur at the LSB is caused by blood flowing back into the left ventricle during diastole. A water-hammer pulse is a strong and rapid pulse that quickly collapses after its peak.
These findings suggest a pathology in the aortic valve, where it fails to close properly, resulting in blood flowing back into the left ventricle. This condition can be caused by various factors, such as infective endocarditis, connective tissue disorders, or congenital heart defects.