Dive

Question 1

Time for patients to remain at RCF following treatment? 17-9.1

Answer 1

• 2 hours for Table 5

* 6 hours for Table 6 and complete relief

Question 2

Stipulation for shortening stay times at RCF for patients or tenders? 17-9.1

Answer 2

• UMO authorization
• Will be with personnel experienced at recognizing recurrence of symptoms
• Within 30 minute radius

Question 3

How far to remain within reach of RCF for 24 hour observation period for patients? 17-9.1

Answer 3

Within 1 hour of RCF

** Same for tenders on a 4, 7, or 8

Question 4

How long must tenders remain near RCF following treatments? 17-9.1

Answer 4

1 hour

Question 5

Flying restrictions for patients? 17-9.3

Answer 5

72hr restriction following any treatments

Question 6

Flying restrictions for tenders? 17-9.3

Answer 6

24 hours for anything but Table 4,7, and 8

Question 7

When must the patient be kept awake?>

Answer 7

During O2 breathing at depths deeper than 30FSW

* Should still monitor vitals

Question 8

When can patient eat?

Answer 8

Whenever not on O2

Question 9

How do you calculate ATA given a depth?

Answer 9

ATA = (Depth/33) + 1
Ex: 125 FSW = ? ATA
* (125/33) + 1 = 4.78ATA

Question 10

How do you calculate % gas with a given depth?

Answer 10

ATA * % Gas on surface
Ex: % O2 in scuba at 33 FSW
* % O2 on surface x ATA of 33FSW
* .21 x 2 = .41 or 41%

Question 11

Procedure for first CNS O2 hit non-convulsion? 17-8.10.1

Answer 11

• Off O2

* Wait 15 minutes after all symptoms have subsided before resuming

Question 12

Procedures for 2nd CNS O2 hit or convulsion?

Answer 12

• OFF O2
• Wait for all symptoms completely subsided
• Decompress 10 FSW at rate of 1 FSW/min
• Resume O2
• ** Consult UMO for any more hits

Question 13

Treatment for Altitude DCS PAIN ONLY, and resolved before reaching 1 ATA from altitude? 17-4.8.1

Answer 13

• 2 hours of 100% O2 on surface and monitor for 24 hours

Question 14

Stipulations for return to diving regarding: Designated divers with history of DCS Type I whose symptoms resolve completely and who remain asymptomatic after the initial hyperbaric treatment?

Answer 14

NPQ 7 days

• Cleared after 7 days by UMO
• No waiver needed

Question 15

Stipulations for return to diving regarding: Designated divers with history of DCS Type II or AGE whose symptoms resolve completely and who remain asymptomatic after the initial hyperbaric treatment?

Answer 15

NPQ 30 days

• Cleared after 30 days by UMO WITHOUT WAIVER IF:
• Brain/sine MRI within 7 days is negative

Question 16

Stipulations for return to diving regarding: Designated divers with a history of DCS or AGE with residual symptoms, neurologic deficits (new/changed) and/or abnormal findings (new/changed) on brain +/- spine MRI?

Answer 16

• DISQUALIFIED for DIVE DUTY (Need a waiver)

Question 17

When must a cardiologist evaluation for PFO take place?

Answer 17

Anyone (Diver/Candidate) diagnosed with Type II DCS

Question 18

Types of DCS I

Answer 18

• Pain
• Cutaneous
• Lymphatic

Question 19

Types of DCS II

Answer 19

• Neuro
• Cardiopulmonary
• Inner Ear