The nurse assesses that a client has nailbed clubbing. Which additional information is consistent with this finding?

Choice A reason: Deep tendon reflexes are neurological indicators and are not directly associated with clubbing, which is a vascular and systemic sign. Choice B reason: Peripheral edema may be present in heart failure but is not a direct correlate of clubbing. Clubbing is more associated with chronic hypoxia than fluid overload. Choice C reason: Clubbing is often seen in conditions that cause chronic hypoxia, such as congenital heart disease, lung cancer, or interstitial lung disease. An oxygen saturation of 85% indicates significant hypoxemia, which supports the presence of clubbing. Choice D reason: Capillary refill less than 3 seconds is considered normal and does not correlate with the pathophysiology of clubbing.