What potential risk increases for a client taking ciprofloxacin and has a history of tendonitis?

The risk associated with ciprofloxacin, particularly for a client with a history of tendonitis, is primarily linked to the possibility of tendon rupture. Ciprofloxacin is a fluoroquinolone antibiotic that has been associated with an increased risk of tendon injuries, which can manifest as tendonitis or even tendon rupture, especially in certain populations such as older adults and those with pre-existing tendon conditions.

For individuals already predisposed to tendon issues, such as those with a history of tendonitis, the use of ciprofloxacin can exacerbate this risk. This is due to the drug's mechanism of action, which can affect the cellular processes involved in tendon repair and maintenance. It is crucial for healthcare providers to weigh the benefits of treatment against this significant risk, particularly for patients who may have compromised tendon health.

While the other options may represent concerns in certain contexts, they are not directly associated with the use of ciprofloxacin in relation to tendon health. Thus, the most relevant risk for a client with tendonitis while on ciprofloxacin is indeed the potential for rupture of tendons.