PMC4323710_01
Conscious sedation with inhaled 50% nitrous oxide/ oxygen premix during PDT
session
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An inhaled 50% nitrous oxide/oxygen premix was administered using a face mask, yielding conscious sedation and pain relief during the entire treatment (Figure 1).
Dysuria, pain, and pruritus severity score according to the patient's own
records over time, and its relation to PDT sessions. wks, weeks
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However, a long-lasting response was experienced after the third session, with absent to mild pain or pruritus during nine months, before recurrence and the need for a fourth treatment (Figure 2).