Methacholine challenge, military, and diving (SCUBA and sky)

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starpilot2k

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hello, I was referred here by a member at uplink.space.com.

Anyway, I'm trying to get into the Army, and I'd also like to go skydiving and SCUBA diving in the near future. My recruiter and I have sent all my medical documentation to the MEPS, and I'm going for a methacholine challenge/pulmonary function test within the next few weeks. Can anyone tell me what I can expect during the methacholine challenge and pulmonary function test? My recruiter has been useless in helping me know what to expect.

SCUBA diving and skydiving are things that have always appealed to me, and I'm getting sick of saying "I'd like to try that someday, but I cant because I have asthma." oops... sorry... I have a history of asthma. More on that in a bit. In scanning the boards here, I've gathering that some divers actually do have asthma, which makes me very happy (not that they have asthma, but that I can do it even if I do have asthma).

Now, an autobiography of my history of asthma. When I was about three, my mom came outside and saw my dad cutting grass with me on his lap. She said my eyes were puffed, and I sounded like my breathing was quite labored. First indication of asthma in my life. Through elementary and high school, if I ran to hard, laughed too hard, was around cats or dust, I would have trouble breathing. I had an inhaler with me all the time, but I dont remember the last time I had one. It has been quite a while. The summer before my 10th grade year (in 1997) I went to space camp, and was told, for the first time, that I wouldn't be able to join the military, or have a flying career, because I had asthma. It was a fine time to find out that my dreams couldn't come true, even if I had dreamed them uninhibited for the last 14 years. In the six years since then, I haven't been able to come to terms with knowing that I'll always have this "asthma thing" looking over my shoulder everywhere I go, and keeping me from doing the things I've always wanted to do. I was in JROTC through all of high school, and eventually began talking to recruiters, but put off enlisting until after college. I hoped by putting it off I wouldn't have to deal with the "asthma thing." As I've learned, you can put it off until tomorrow, but tomorrow eventually turns to today. Along comes the spring semester of my third year of college, and I'm in need of money to finish school. A classmate who spent 4 years in the Army, and another classmate from high school helped me enroll in AFROTC. Now, I needed to get in shape. I had been trying for the previous year, but only doing pushups and sit ups on occasion. I was still quite out of shape. In my first physical fitness test, I did pathetic. I didnt pass the sit-ups, I barely passed the push-ups, and I ran 8 1/2 laps out of 12 laps on the 1/8 mile track (the min requirement is running 1.5 miles in at least 12 minutes. It used to be 2 miles in 16 minutes and THANK GOD they dropped it down!! At this point, 2 miles seemed like Hell on Earth). I wasn't satisfied, I couldn't bear the thought of having this crap hold me back. I had never gone running for exercise (or any reason for that matter) for fear of having an attack. With the help of a friend of mine (who's been in the Army Reserve for 6 years) I began exercising more strenuously, and more frequently. So, at my next fitness test, and I passed the pushups and situps. And I ran 9 1/2 laps out of 12 before I had to quit. Again, I wasn't satisfied. After classes I began going up to the field house to run on my own. One day, I ran all 12 laps. Somehow, did it with 15 seconds to spare. Even though it took everything I had, I was beyond elated. I couldn't believe I had done it. And with no breathing problems! Eventually, I ran it as fast as with 1m 15s to spare, but on my last fitness test, the do or die one, I did it in 11:07. And I still hated running. But the semester was over, and this summer began. There was no way I was going to field training for ROTC unable to run (I didnt know until 7 July that I wasn't going to be able to go to field training. My departure date was 8 July). After earning a semester GPA of 1.4, I told myself I didnt deserve to slow down or take a break or anything. One day I put the weed wacker away after trimming around the house, and decided it was time to start running. I was covered in grass clipping, I had on combat boots and jeans, and just took off running. I didnt know where I was going, or when I would be back. Not very far down the road, I set a goal for myself, a goal for the route I was going to take, and I would not let myself deviate from that goal. I told myself I didnt deserve to after being so lazy with my school work. When it was all said and done, I ran what I estimated to be between 2 and 2.5 miles. So, later on, after massaging my legs and relaxing for quite some time, I hopped in the car and drove the route I took to see how far it was. After a short distance, the 2.5 mile mark ticked away, and I was still driving... by the time I was done, I measured that I ran 3.9 miles. And I didnt let myself stop once. No need for the inhaler, and good thing because as I said before... I haven't had one in a very long time.

All summer I've been running like that, though I usually wear my PT gear from AFROTC, or some shorts and good running shoes. I typically now do 3 to 4 miles at roughly a 9 minute mile pace, though I have gone as high as 7 miles. Now, in part because of my bad spring semester (and several preceeding it), I have withdrawn from classes, and I'm trying to enlist in the Army. Their requirement is to run 2 miles in under 16 minutes. I can run the 2 miles without a problem, I did it this afternoon in 14:19. I am much more healthy than I have ever been (i.e. I have no problems breathing :D), and more importantly, I've gained a new hobby. I actually enjoy running. Which is why anymore, I dont ever say I have asthma. I have a history of asthma that exists on nothing more than paper. And I want to do anything I can to make sure this doesnt keep me from achieving my dreams.

Sorry for the rant and life story here, but I figured it would help get my questions above answered.

Again, I'm very sorry for the rant. I just hope it conveys how serious I am about this. Thanks for reading this far, and I'd appreciate any help or tips =-)


starpilot2k
 
I have moved this post to the Diving Medicine forum as I think it is more appropriate here.

Hopefully one of the Doc's will be able to respond and you can achieve your dreams.

Cheers
Jonathan
 
I served 4 years active army and 10 years in the reserves as a infantry soldier. I have worked special ops at my current job for the past 5 years as a swat member. Going through the swat academy was the toughest challenge i had ever been through in my life. I thought the try outs were grueling, man was i wrong. Physically and mentally we were pushed beyond our limits every day.

If there is one thing i have learned is "MIND OVER MATTER". Its 90% mindset. If your in the proper mindset you can accomplish anything as you have discovered. What doesnt kill you, only makes you stronger. You sound like you are truly dedicated. I know this doesnt truly answer your medical question but bottom line is, never give up and give it your best.
 
I've been thinking if things dont work out with the military, maybe a law enforcement career might not be a bad thing to try for. Are they as strict with asthma as the military?

btw, I'm trying to get into flying helicopters, and if that doesnt work, I'm looking at combat engineering. It seems like you enjoy your line of work... how has it been?
 
Every agency has standards. Im not to sure what ours is concerning asthma as they perform a medical background check among many other things. None of our team members have athma so i wouldnt know. I do know that some of our officers do have asthma but am not sure of the extent of it.

I do remember seeing a guy from a ranger bn that carried an inhaler but he wasnt tabbed so he could have been a clerk or something. It seems the asthma isnt affecting you now so hopefully you will be cool and get to follow your dream. If there was one thing that sticks out in my mind during my years in the army, it had to be running and of course guard duty. If you can run, you have half the battle beat.....lol.

I wish you the best of luck with flying choppers as that would be an exciting career. Some of my buddies that went through warrant officer school said it was a bear and huge challenge. If you go that route you will also get the luxury of attending SERE school. Another great school.
 
lol! Yeah, I hear there's a lot of running no matter what. When I was getting ready for field training in the Spring, they kept telling us "You're going to be running A LOT!" I was supposed to go to Lackland AFB. One of my friends said when he was there for basic, he always saw the ROTC cadets running. I figured I should learn to like it... hehehe...

When my friend got done with basic, he went to Pararescue school. He got through three days of training... and then spent two years in supply. But, now he's in Germany and loving it, so I guess good things come to those who wait. He has said some things to me about SERE, but not too much. It, and a lot of related occupations, seem to be pretty high-speed. That's the kind of stuff I'm looking for... :D

btw, thanks for your input!!

I'll be back in a bit... I work at night, so this is dinner time for me!
 
as far as pulmonary function test and methacholine challenge test is concerned, there is not much to it. Basically the pulmonary function test requires you to breath through a tube so some of your lung parameter can be measured. The methacholine part is basically a chemical induction to see if you do have a reversible airway constriction ie asthma. Once they give you the medicine, they will repeat the pulmonary function test to compare with the one before medication. Basically if it is positive, you do have asthma, however if it is negative, it does not rule out asthma.

I don't know what the criteria is for the army/airforce etc. The most important thing about asthma is to know what is the trigger.
Could be anything from dust, smoke, cold air, exercise etc. Some of the important information to assess the severity would be the frequency that you need to use inhaler, history of steroid use to control symptom, prior asthma attack, needs for ventilator in the past during exacerbation etc.
Some people do grow out of the illness while some may develop it later in life.

As far as scuba is concerned, you will need to know first what the trigger of your asthma is. Your history of wheezing with exercise is quite worrisome as far as diving goes but it does not seem to happen recently with your running. How about cold weather?
I think you definitely will need to have a good check up before starting scuba diving to see the status of your asthma and pulmonary function test is actually not a bad idea.
 
...the most important thing about asthma is to know what is the trigger...

Basically, the only thing that sets me off is cats. But they dont really bother me anymore. Things that I remember setting off my asthma basically just make my eyes water. And cats are pretty much the only thing that'll do it. To the best of my knowledge, there aren't cats underwater, or up in military aircraft :wink:.

I began running for AFROTC back in February. It was an unusually cold winter. I went out running one day right around sunset, and the high that day was about 8F (-13C). I found out later that it probably wasn't the brightest idea to go run like that in the extreme cold, but the point is, I had no troubles. I've noticed that when I keep myself hydrated, all symptoms go away. Also, I've never been as active as I have been in the last year and a half. I used to sit in front of the computer a lot. I saw an old friend of mine about a week or so ago, who I haven't seen in over a year. The first thing he said to me was "Dude, you've lost weight!"

I saw my doctor about a month ago, and he said he thinks I'll have no problems with the tests. He gave me a physical and said I'm normal for my age. I'm nervous anyway, if you couldn't tell hehehe... oh, that reminds me. I dont react well to stress. I'm learning to deal with it though. I think the biggest thing about all this is I need to learn how to chill out. One of my friends recently described me as "high strung."


btw, thanks for your reply. It helps a lot knowing what to expect during the test. I had another doctor that works with my mom tell me I should pass the PFT without a problem... it's just the methacholine that's worrying me :wink:
 
Not really qualified to answer but i USED to suffer badly from asthma but grew out of it suddenly which apparently isnt uncommon.

Most places over here want to have no evidence of an attack for several years (3 or 5 i forget which) and critical flow values must be above a specific minimum.

If you can meet those requirements a doctor would certainly sign you off to dive. If there is any hint that an attack could still happen though it'll be trickier.

Im guessing the military is more strict regarding that. It may be a dumb question but have you tried emailing your local army careers office or someone with your query ? They maybe able to give you the official line fairly quickly.

Welcome over here too - you may know me as glynebwy, banned off the SDC message board round about March :)
 
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