An anchor system for securing a catheter to a patient may include an anchor pad, which may include a lower surface, an upper surface, and a window extending through the anchor pad. The lower surface may include an adhesive layer to adhere the anchor pad to skin of the patient. The upper surface may include a catheter securement mechanism. The window may provide access to the skin of the patient for application of a topical skin adhesive at a catheter insertion site disposed within the window.