Treatment Protocols & Procedures Flashcards
7 cards from real CHT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Treatment Protocols & Procedures flashcards as text
Which UHMS-approved treatment table is used for arterial gas embolism when Table 6 fails to resolve symptoms?
Answer: Table 6A
Table 6A extends Table 6 with an additional 60-minute oxygen period at 60 fsw for cases where symptoms persist.
During a hyperbaric oxygen treatment, a patient reports vision changes and facial twitching. What is the most likely cause and correct action?
Answer: CNS oxygen toxicity; remove oxygen mask immediately
Facial twitching with vision changes are prodromal signs of CNS oxygen toxicity, requiring immediate removal of the oxygen mask and air break.
What is the standard air break duration in a treatment table that includes air breaks to reduce oxygen toxicity risk?
Answer: 5 minutes
Standard air breaks are typically 5 minutes of air breathing between oxygen periods to reduce cumulative CNS oxygen toxicity risk.
A tender inside the chamber should breathe oxygen during a treatment for decompression sickness primarily to:
Answer: Reduce the risk of the tender developing decompression sickness
Breathing oxygen at depth reduces the tender's nitrogen loading, lowering their risk of developing decompression sickness during the treatment dive.
In the U.S. Navy Table 6 protocol, oxygen is breathed at 60 fsw (2.8 ATA) in cycles. What is the oxygen breathing schedule at 60 fsw?
Answer: Three 20-minute periods with two 5-minute air breaks
Table 6 includes three 20-minute oxygen periods separated by two 5-minute air breaks at 60 fsw before the ascent phase.
Which condition is considered an absolute contraindication to hyperbaric oxygen therapy?
Answer: Untreated pneumothorax
Untreated pneumothorax is an absolute contraindication because increased pressure can cause tension pneumothorax during treatment.
When treating carbon monoxide poisoning, the primary mechanism by which hyperbaric oxygen accelerates CO elimination is:
Answer: Competitively displacing CO from hemoglobin by mass action
High partial pressures of oxygen competitively displace CO from hemoglobin by mass action, dramatically accelerating the half-life reduction of carboxyhemoglobin.