Hoods and being choked to death

[JahJahwarrior]

If there is anything to buy local, it's wetsuits and hoods.

If the local shop doesn't have the brand you want to try on, time for a vacation!

My K01 is the 5mm and only for dives where I'm not moving much, otherwise it is stifling hot. My Lavacore is great but provides no thermal protection at all, just bare minimum, but for swimming dives it is perfect. Both purchased in a store after trying on 2-3 sizes.

 

[jagfish]

I almost suffocated myself in a fitting room one hot day...while I was pulling the (too small) hooded vest down over my head, when it stopped while covering my mouth and nose. Due to the sweat, it got stuck in place and I could not breathe. I struggled like mad for what felt like a (breathless) eternity. Things just started to get "sparkly" when I was finally able to dislodge the vest enough to grab a breath. No one expects to go out like that...

 

[lamarpaulski]

I hate hoods too because of that chokey feeling. I find hooded vests are much much better and really keep you warm too. I can’t really explain why they don’t choke as much as hoods but they don’t. I keep thickness to a minimum for diving conditions.

ymmv

 

[FluffyRabbit]

If I wear the hood by itself on land, it is not too bad. However, when I tuck it under my wetsuit, all the material scrunches up and that choking feeling is horrible, especially with neck flexion. Recently, I started wearing the hood outside of my wetsuit - it looks weird, but its almost just as warm underwater with much less constriction.

 

[birdman27]

I hate hoods too because of that chokey feeling. I find hooded vests are much much better and really keep you warm too. I can’t really explain why they don’t choke as much as hoods but they don’t. I keep thickness to a minimum for diving conditions.

ymmv

I too find hooded vests to be much more comfortable. Really changed my desire to dive locally once I figured that out (and I only figured it out by accident when I had a major suit malfunction on day 1 of a 3 day trip to the channel islands; one of the crew let me borrow his old hooded vest and the rest is history)

 

[Caveeagle]

Fourth element makes a real nice hood. Only one I have found that doesn’t choke me out.

 

[Scraps]

Hoods and being choked to death
~~~ Its possible !

FYI

In 1967 to 1982 there was a great LA County Chief Medical Examiner aka CME aka "Coroner," Dr. Tom Noguchi who as we often stated "practiced Horizontal Medicine" since all his patients were always flat on their backs.

Dr. Noguchi was born in Tokyo Japan and migrated to the US after WW11 where he acquired several post doctor specialties and eventually joined the LA County Coroner's office and became the LA County Chief Medical Examiner aka CME aka Coroner in 1967. Some may recall him as the "Coroner of the stars" because of the large number of Hollywood stars that went to the other side during his tenure.

He came to public attention and a household name for a series of autopsies; which he performed on a number of celebrities that included Albert Dekker, Robert F. Kennedy, Sharon Tate, Janis Joplin, Inger Stevens, Gia Scala, David Janssen, William Holden, Natalie Wood, and John Belushi.

The fountain head of recreational and commercial diving at that time was in Southern California and LA County Underwater Instructors association was at the forefront of diving.

The recreational divers dry suit which had been perfected in the 1940s by the late Bill Barada,( LA County UW instructor) and marketed under the banner of Aqula was rapidly phasing out in favor of the wet suit which has been serendipitously discovered by Hugh Bradner abd Willard Bascom and place on the market in 1954 as the EDCO wet suit just 13 years previously.

The Aqula drysuit had a attached hood and on some models attached feet -- a true full body protection whereas the EDCO was originally sold as a shorty but soon was marketed as a full suit 3 piece wetsuit, jacket, pants and hood. It was the hood that was discovered culprit in several near misses and equal number of unexplained diving fatalities.

At that junction in diving we were still experimenting and searching for answers. And as I recall from my first day in anatomy class there was a huge banner over the door which proclaimed "We learn from the dead" and indeed we did and do...

There was an LA Co Ordinance or some sort of an agreement that ALL diving deaths would be subject to a four point investigation and report as follows:
1) A LA Co Certified Instructor would investigate and submit a standard form report as to adherence to established diving policies and procedures. (I did several that occurred in Orange county, which is south of LA county )
2) Equipment would be tagged and submitted to Al Thompson's Professional SCUBA Repair (PSR) for extensive evaluation as to performance and air quality. PSR closed it doors so the activity was performed at UCLA under the direction of Dr. Glen Egstrom, LA County & NAUI Instructor. (Now @Ken Kurtis, NAUI instructor does something of this nature ?)
3) If involved the LA County life guards were required to also submitted at report
4) The deceased body was transported to Dr Noguchi who performed a very extensive autopsy on the diseased.
5) All reports were combined and a final report was created and available to involved or concerned personnel.

Unfortunately it was discovered that this could possibly did create a "post mortem deflation of character of the deceased" and was halted after several years of operation

But not without certain findings.

"As I recall --" there were two, perhaps more deaths in which there was no apparent trauma the victim just went to sleep which baffled all concerned except Dr. Noguchi who meticulously examined to body and equipment reports

Dr. Noguchi discovered that the victims were wearing very tight hoods that restricted blood flow via the two Carotid arteries to the brain and they slowly fell asleep.

Dr Tom Noguchi identified this syndrome as "Carotid sinus reflex" or "Carotid sinusitis reflex" (the suffix "sitis" indication irritation. Locally we called it the "Charlie Chan effect" after the 1930s and 1940s moves in which there was a victim with no marks on body but Charlie Chan discovered that there had been pressure placed on the temples, the victim slowly fell a sleep and ultimately passed away .

Immediately all wet suit manufactures, most were in SoCal, began examining the design of the wetsuit hood and the need for redesign. Now it is time for dry suit manufactures and dive shops to pay more attention to the drysuit's neck seal...I suspect that current crop of hoods have undergone the test of time

All that occurred around 50 years ago and has been largely forgotten except for a few who were involved. so now an old syndrome "Carotid sinus reflex" or the "Charlie Chan effect" has been resurrected and will soon be come a part of the divers lingo

Cheers from California -- where it all began

Sam Miller,III

DD

What a great post! Thanks for taking the time to share that history, Sam.

 

[Dark Wolf]

A hood with a back zipper is also a good option. My wife who has a lot of thick long hair uses one and likes it.

I also have long and thick hair. I went with the zip back and bought two sizes. The XL was very snug, and I dove it with the zipper unzipped for a few months until the neoprene stretched some. I also trimmed around the face. It now fits very well, but there was a time I was about to set it on fire.

DW

 

[dewdropsonrosa]

I'm with @davehicks's wife and @Dark Wolf. If you have a lot of hair (when I started diving, mine was long enough to snap my neck if I sat on my ponytail), a zippered hood left unzipped/gusset coverage only is the way to go.

 

[EireDiver606]

Cheers from California -- where it all began

Did it not all begin in Italy during WW2? I suppose US, Italy, and France were developing scuba at the same time.