What are the three variations of PMI?

What are the three variations of PMI?

• A. Hyperkinetic, Sustained, and Diffuse
• B. Localized, Soft, and Anomalous
• C. Normal, Amplitude, and Duration
• D. Quiet, Mild, and Prominent

Answer: (A)

The PMI, or Point of Maximal Impulse, can vary in how it feels when you palpate it. The three classic variations to recognize are hyperkinetic, sustained, and diffuse. A hyperkinetic PMI is unusually forceful and brisk, with a higher amplitude than normal, often seen when there’s increased stroke volume or heightened metabolic state—think conditions like anemia, fever, hyperthyroidism, or anxiety. A sustained PMI lasts longer than a normal impulse, indicating a larger or more forceful left ventricle that maintains contraction into a longer part of systole, as seen with LV hypertrophy or dilation. A diffuse PMI is felt over a wider area rather than being localized to a single spot, which can occur with a larger or dilated ventricle and sometimes with volume overload. These three patterns—hyperkinetic, sustained, and diffuse—collectively describe the common PMI variations you’ll encounter in physical exams.

The PMI, or Point of Maximal Impulse, can vary in how it feels when you palpate it. The three classic variations to recognize are hyperkinetic, sustained, and diffuse. A hyperkinetic PMI is unusually forceful and brisk, with a higher amplitude than normal, often seen when there’s increased stroke volume or heightened metabolic state—think conditions like anemia, fever, hyperthyroidism, or anxiety. A sustained PMI lasts longer than a normal impulse, indicating a larger or more forceful left ventricle that maintains contraction into a longer part of systole, as seen with LV hypertrophy or dilation. A diffuse PMI is felt over a wider area rather than being localized to a single spot, which can occur with a larger or dilated ventricle and sometimes with volume overload. These three patterns—hyperkinetic, sustained, and diffuse—collectively describe the common PMI variations you’ll encounter in physical exams.