A client with chronic kidney disease (CKD) has an arteriovenous (AV) fistula in the left forearm. Which observation by the nurse indicates that the fistula is patent?

The left radial pulse is 2+ bounding.

Assessment of a bruit on the left forearm.

Auscultation of a thrill on the left forearm.

Distended, tortuous veins in the left hand.