A pulse with decreased volume that feels weak and thin is described as which?

A pulse with decreased volume that feels weak and thin is described as which?

• A. Bounding
• B. Thready
• C. Pulsatile
• D. Regular

Answer: (B)

A thready pulse indicates a very weak, low-volume pulse that feels like a thin thread under the fingertips. This reduced amplitude means the heart is delivering less blood per beat to the peripheral arteries, so the sensation is faint and easily obliterated with light touch. It’s a sign of low cardiac output or poor peripheral perfusion and is commonly seen with dehydration, significant blood loss, shock, or some forms of heart failure. Think of how the pulse feels: a strong, full pulse is described as bounding, meaning a higher stroke volume and stronger arterial stretch. A pulsatile description refers to the rhythmic pulsing you feel, not the strength. A pulse described as regular refers to rhythm, not how strong or weak it is. The term thready specifically captures the weak, thin, minimal volume that characterizes decreased perfusion.

A thready pulse indicates a very weak, low-volume pulse that feels like a thin thread under the fingertips. This reduced amplitude means the heart is delivering less blood per beat to the peripheral arteries, so the sensation is faint and easily obliterated with light touch. It’s a sign of low cardiac output or poor peripheral perfusion and is commonly seen with dehydration, significant blood loss, shock, or some forms of heart failure.

Think of how the pulse feels: a strong, full pulse is described as bounding, meaning a higher stroke volume and stronger arterial stretch. A pulsatile description refers to the rhythmic pulsing you feel, not the strength. A pulse described as regular refers to rhythm, not how strong or weak it is. The term thready specifically captures the weak, thin, minimal volume that characterizes decreased perfusion.