Hyperbaric Wound Healing Flashcards
7 cards from real Certified Hyperbaric Technologist Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Hyperbaric Wound Healing flashcards as text
Which physiologic mechanism most directly explains how HBO2 therapy improves healing in a hypoxic wound?
Answer: Increased dissolved oxygen in plasma driving diffusion into ischemic tissue
HBO2 dramatically raises plasma-dissolved oxygen, steepening the diffusion gradient into hypoxic tissue.
A diabetic foot ulcer classified as Wagner grade 3 with osteomyelitis is generally considered:
Answer: An approved indication for adjunctive HBO2 therapy
Wagner grade 3 or higher diabetic foot ulcers are recognized indications for adjunctive HBO2.
Hyperoxia during HBO2 promotes wound healing partly by stimulating which process essential for new tissue?
Answer: Angiogenesis and fibroblast collagen synthesis
Elevated oxygen tension drives angiogenesis and supports collagen production by fibroblasts.
Which assessment best predicts whether a wound is likely to respond to HBO2 therapy?
Answer: Transcutaneous oximetry (TcPO2) measurements
TcPO2 measurements, especially in-chamber, help predict tissue oxygenation response.
Why does HBO2 enhance leukocyte killing of bacteria in an infected wound?
Answer: Oxygen-dependent respiratory burst requires adequate tissue O2
Neutrophil oxidative (respiratory) burst killing is oxygen-dependent and restored by raising tissue O2.
A typical HBO2 wound-healing treatment protocol commonly uses pressures in the range of:
Answer: 2.0 to 2.5 ATA for about 90 to 120 minutes
Most wound protocols use roughly 2.0–2.5 ATA for 90–120 minutes daily.
Which of the following is the strongest relative contraindication a technologist must screen for before wound HBO2?
Answer: Untreated pneumothorax
An untreated pneumothorax can become a life-threatening tension pneumothorax during decompression.
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