CHS Treatment Planning & Protocols 2 — Questions and Answers
Question 1: What treatment pressure is most commonly used for acute carbon monoxide poisoning in hyperbaric oxygen therapy?
- 1.5 ATA
- 2.0 ATA
- 2.4–3.0 ATA (Correct answer)
- 4.0 ATA
Correct answer: 2.4–3.0 ATA
Standard HBO2 for CO poisoning uses 2.4–3.0 ATA to rapidly displace carbon monoxide from hemoglobin and accelerate elimination.
Question 2: The Marx protocol for mandibular osteoradionecrosis typically involves how many HBO2 treatments preoperatively?
- 10
- 20
- 30 (Correct answer)
- 40
Correct answer: 30
The Marx protocol prescribes 30 preoperative HBO2 sessions followed by 10 postoperative sessions to promote healing in radiated bone.
Question 3: USN Treatment Table 5 is indicated for which clinical scenario?
- Arterial gas embolism
- Mild decompression sickness with complete symptom relief at depth (Correct answer)
- Severe neurological decompression sickness
- Carbon monoxide poisoning
Correct answer: Mild decompression sickness with complete symptom relief at depth
Table 5 is appropriate for mild DCS cases where complete symptom resolution is achieved at 60 fsw, requiring less total treatment time than Table 6.
Question 4: How long does each hyperbaric oxygen treatment session typically last for chronic wound healing indications?
- 30 minutes
- 60 minutes
- 90–120 minutes (Correct answer)
- 180 minutes
Correct answer: 90–120 minutes
Standard HBO2 sessions for wound healing last 90–120 minutes at pressure to maximally elevate tissue oxygen tensions in ischemic areas.
Question 5: Per UHMS and CMS guidelines, at what point should HBO2 efficacy be formally reassessed in diabetic foot ulcer patients?
- After 5 treatments
- After 10 treatments
- After 20–30 treatments (Correct answer)
- After 40 treatments
Correct answer: After 20–30 treatments
UHMS and CMS guidelines recommend reassessment after 20–30 treatments to determine whether the wound is responding adequately to HBO2.
Question 6: In the treatment of arterial gas embolism (AGE), what is the initial target pressure during HBO2 therapy?
- 2.0 ATA
- 2.4 ATA
- 2.8–3.0 ATA (Correct answer)
- 4.0–6.0 ATA
Correct answer: 2.8–3.0 ATA
AGE is treated using USN Table 6, which reaches 2.8 ATA (60 fsw) to maximally compress gas bubbles and deliver high-dose oxygen.
Question 7: For radiation-induced cystitis, how many HBO2 treatments are typically required per established protocols?
- 5–10 treatments
- 15–20 treatments
- 30–60 treatments (Correct answer)
- 80–100 treatments
Correct answer: 30–60 treatments
Radiation cystitis protocols typically involve 30–60 HBO2 sessions at 2.0–2.4 ATA to promote angiogenesis in chronically hypoxic, irradiated tissue.
CHS Treatment Planning & Protocols 2
What treatment pressure is most commonly used for acute carbon monoxide poisoning in hyperbaric oxygen therapy?