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Vascular & Pigmented Lesion Treatment Flashcards

7 cards from real CLT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Vascular & Pigmented Lesion Treatment flashcards as text

  1. A patient on isotretinoin (Accutane) requests laser treatment for pigmented lesions. What is the recommended waiting period after stopping isotretinoin before proceeding?

    Answer: 6 months

    Most guidelines recommend waiting at least 6 months after stopping isotretinoin before performing ablative or aggressive laser procedures due to impaired wound healing.

  2. The Fitzpatrick classification system is used in laser practice primarily to:

    Answer: Assess skin phototype and predict risk of adverse pigmentation events

    The Fitzpatrick scale categorizes skin types I–VI based on sun sensitivity and tanning ability, helping predict risk of hyperpigmentation or hypopigmentation from laser treatment.

  3. Which vessel characteristic most affects the required pulse duration for leg vein treatment with Nd:YAG 1064 nm?

    Answer: Vessel diameter

    Larger vessel diameter has a longer TRT, requiring longer pulse durations to adequately heat the entire vessel wall without rupture.

  4. Which pigmented lesion is LEAST likely to respond to Q-switched laser treatment and most likely to recur?

    Answer: Melasma

    Melasma involves hormonally driven melanocyte hyperactivity and typically recurs after laser treatment without ongoing maintenance, making it the most challenging pigmented lesion.

  5. A patient develops hypopigmentation in a treated area 3 months after laser treatment. The most likely cause is:

    Answer: Destruction of melanocytes from excessive fluence or inadequate cooling

    Hypopigmentation after laser treatment results from thermal destruction of melanocytes when fluence is excessive or epidermal cooling is inadequate.

  6. When treating a superficial hemangioma in an infant, which factor most influences the decision to treat early versus watchful waiting?

    Answer: Location near critical structures such as eye, airway, or lip with risk of ulceration or functional impairment

    Early intervention is indicated when hemangiomas threaten function or vision, risk ulceration, or involve critical anatomical areas; otherwise, watchful waiting is appropriate.

  7. Which documentation element is legally and clinically most important to complete BEFORE beginning a laser treatment for vascular or pigmented lesions?

    Answer: Signed informed consent detailing risks, benefits, alternatives, and expected outcomes

    Informed consent is a legal and ethical requirement that ensures the patient understands the procedure, potential risks such as scarring or dyspigmentation, and realistic outcomes.