human
To respiratory physicians: is length of time of holding breath an indication of lung capacity?Im a 24M, light smoker, on no meds, weighing 71kg at 175cm.For a smoker who is hypersensitive to the effects of smoking on his body, I am often testing my lungs, usually while exercising (swimming), to see how long I am able to hold my breath. Am I making a false conclusion when I see that my ability to hold a longer/shorter breath correlates to better/worse lung health?Side note: Ive heard that lung capacity can only deteriorate, and is rather stubborn in improving, or all together impossible.. so what gives?Ps: if there is a better sub to ask this question, please do suggest it!
gpt
The other comments here are correct that breath holding time is not an accurate reflection of total lung capacity (TLC).But to unpack your question a little further, TLC is just one of many variables important in lung health. Chronic lung disease from smoking is predominantly obstructive (COPD), which is measured by a decrease in the forced expiratory volume in 1 second (FEV1), often also expressed as a ratio to the forced vital capacity (FVC), or the total amount of air you can blow out at once.If anything, smokers tend to increase their total lung capacity as their disease progresses because they are trapping air, unable to blow it out.
I cant like this enough.I havent been authorized by the mods of this sub, but I want you to know that every death is a tragedy to medical professionals. Regardless if youre prepared for it or not, its hard to deal with losing someone. Even if you know your patient is terminal, it still hurts to have it end in death.You did everything you could, and MORE than most would do.Im so sorry you had this experience, but please know that you reacted stronger and better than a huge majority of people would.
every death is a tragedy to medical professionals. Regardless if youre prepared for it or not, its hard to deal with losing someone. Even if you know your patient is terminal, it still hurts to have it end in death.Truth. As an oncologist, I have just grown numb to losing a patient. It still feels like a stab in my heart every time.