Journal
PHOTODERMATOLOGY PHOTOIMMUNOLOGY & PHOTOMEDICINE
Volume 38, Issue 5, Pages 435-441Publisher
WILEY
DOI: 10.1111/phpp.12764
Keywords
actinic keratoses; blood pressure; hypertension; low-irradiance PDT; photodynamic therapy
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Funding
- ProjektDEAL
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Low-irradiance PDT is an effective method to reduce pain and the risk of post-interventional hypertension in photodynamic therapy, which is particularly important for older patients with cardiovascular diseases.
Background: Conventional photodynamic therapy (c--PDT) is a highly effective treatment for actinic keratoses. Besides pain as the main side effect, blood pressure (BP) increases and hypertensive crises may occur during treatment. Reducing the irradiation intensity while keeping the total dose constant ( low-irradiance PDT) can achieve a clinically relevant reduction in pain. This study aimed to evaluate the influence of li-PDT on the BP and pulse (PR) during therapy and the incidence of post-interventional hypertension compared with c-PDT. Methods: We retrospectively analyzed the treatment data of 79 patients (39 c-PDT and 40 li-PDT). BP and PR measurements were performed in all patients before PDT, at mid-exposure, and immediately after PDT. In addition, the pain was assessed by using the visual analog scale. Results: Patients treated with li-PDT reported significantly lower pain than those receiving c-PDT (p < .0005). Additionally, they showed less systolic (SBP) and diastolic (DBP) BP increase (Delta SBP: p < .0005, Delta DBP: p = .015) and overall lower absolute BP values (SBP: p < .0005, DBP: p = .008) compared with c-PDT. They were also significantly less likely to develop post-interventional hypertension (p = .037) or higher stages of arterial hypertension. Regarding PR, there was no difference in absolute values between both groups, but the increase from onset to half irradiation duration was significantly higher in c-PDT (p = .013). Conclusions: Li-PDT is an excellent option to reduce the elevation of arterial BP and decrease the incidence of post-interventional hypertension and hypertensive crisis. This finding has considerable relevance, especially with the risk profile of many PDT patients in mind (advanced age and cardiovascular history).
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