Questions tagged [lungs]

Questions pertaining to each of the pair of organs situated within the rib cage, consisting of elastic sacs with branching passages into which air is drawn, so that oxygen can pass into the blood and carbon dioxide be removed.

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Danger of Radon at the reference levels of 100Bq/m³ and 300Bq/m³

In many regions of the earth there is a natural emission of radon, a radioactive gas, from the ground. Radon can accumulate in houses and reach levels that are dangerous for human health leading to ...
Klaus Niederkrüger's user avatar
-2 votes
1 answer
120 views

Which speed is fatal / dangerous for a human body? [closed]

E.g. during a (extremely fast) motorcycle ride without protective equipment in the atmosphere (i.e., not in a vacuum) acceleration is not an issue I'm looking for insights about how much air ...
Alon's user avatar
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1 vote
1 answer
108 views

Acute symptoms from radon gas exposure

If people live in a high-radon environment (100 pCi/L in breathed air) for just one week, is it unlikely that they would notice it? What is the pCi/L threshold where acute symptoms are likely to ...
bobuhito's user avatar
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1 vote
0 answers
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A biopsy results in dying tissue. What does this mean? [closed]

I'm not a doctor or related in medicine in any way. I'm just a regular Stackoverflow user, and I would like to use my StackExchange experience to acquire knowledge about a bad notification my mother ...
Dominique's user avatar
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1 vote
1 answer
33 views

Is there a nonchronic disease with similar effects to lungs like those of emphysema? [closed]

Can damage to the alveolar walls or reduction in the surface for gaseous exchange be reversible or can a non chronic disease cause these? If yes can you please name a condition in which these things ...
Alexander Pearson's user avatar
1 vote
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24 views

Why do obstructive lung diseases increase total lung capacity and residual volume?

The explanation I can find is that they restrict exhalation due to constricted airways. However, consequentially inspiration should be restricted too, right?
Ocelot's user avatar
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49 views

Cardiopulmonary capacity assessment

Is it possible to determine someone's cardiopulmonary capacity from organ/tissue/blood samples alone? No other clues allowed. Think about a non cooperative patient, who can lie in an anamnesis, or ...
rslemos's user avatar
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Why are corticosteroids not used in the treatment of pneumonia?

Common sense made me think of the need for inflammation reduction in case of pneumonia and the anti-inflammatory characteristics of inhaled corticosteroids. I Googled and found a study1 from 2017 that ...
Bob Ortiz's user avatar
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Is black spotting on the lungs a common benign variance, or a sign of pathology?

I recently found this article which shows an externally-healed lung donation before transplant. The left image is supposedly the lung pre-treatment, and right is post. In both of these images, black ...
jamesdlivesinatree's user avatar
0 votes
0 answers
30 views

Fluid in lungs from pressure during bowel movement? [closed]

One of my relatives is admitted in the hospital because he got infected with COVID. And yesterday, his lungs had fluid in them because he exerted pressure during defecation. How is this possible? ...
Desai's user avatar
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Can Weightlessness help cleaning lungs from Microorganism in Covid-19 patients? [closed]

We know that cleaning lungs from Microorganisms in Covid-19 patients is hard. But In Weightlessness materials easily move around. So could Artificial Weightlessness help doctors for safer and more ...
Houman's user avatar
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How much time can a human withstand without breathing? (after expelling all the air from the lungs)

How much time (how many seconds) can a human withstand without breathing? (after expelling all the air from the lungs)? Any paper? Thanks!
Pablo 's user avatar
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2 answers
99 views

Why aren't lung machines / ECMO widely used for COVID-19? [closed]

I am not a doctor but I have read quite a bit on how COVID-19 affects the body. The ability of a critically afflicted patient to efficiently exchange oxygen drops off a cliff as the lungs fill with a ...
Dale Mahalko's user avatar
1 vote
0 answers
10 views

Effects of Exposure to Periodic, Long-term PM2.5 Pollution

The EPA's AQI quantifies air pollution, sets out ranges of pollution, and associates health risks with each range. Quoting from PurpleAir: "101-150: Members of sensitive groups may experience ...
Kronimiciad's user avatar
2 votes
1 answer
152 views

Can COVID-19 be damaging lung without showing fever? [closed]

Given that a man of 39 years without underlying health condition, is having chest discomfort and tightness, which is more discomfort during evening and night before fall asleep. He don't have cold and ...
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1 vote
1 answer
96 views

How is nitrogen not exchanged in respiration? [closed]

Air is 78% of nitrogen. When we inhale air, we inhale large amounts of nitrogen when compared to oxygen. How is nitrogen not exchanged? How is it exhaled?
RaMathuzen's user avatar
1 vote
2 answers
276 views

Bike pump as a ventilator?

I've been trying to think of the simplest, pre-existing item that could be used as a ventilator to support coronavirus patients that require it. I have come across this useful specification regarding ...
Will's user avatar
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1 answer
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Is open air spraying of disinfectant irritating the respiratory system and therefore increasing risk of infection such as COVID-19?

Recent articles and news items showed groups of people (mainly in Asia) spraying whole cities with disinfectant (as shown on a photo below). Apart from questions about the used substances, dose, ...
Bob Ortiz's user avatar
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0 votes
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Is or could lung lavage be used to treat or at least reduce the time required on a respirator for COVID19 patients?

Could bronchial washing (as used in pulmonary alveolar proteinosis and some forms of pneumonia) be used to treat or at least reduce the length of time a patient suffering from COVID-19 required ...
norlesh's user avatar
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2 votes
1 answer
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How likely is it to develop pneumonia as a result of COVID-19?

The severity of n=44,672 confirmed COVID-19 cases in Mainland China as of February 11, 2020** as a result of the SARS-CoV-2 (previously 2019-nCoV) virus is as follows: 81% mild (assumed: no ...
Bob Ortiz's user avatar
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Why recovered patients develop lung disease due Covid-19?

In this link https://www.dw.com/en/covid-19-recovered-patients-have-partially-reduced-lung-function/a-52859671 we can see Now researchers in Hong Kong have said that recovered coronavirus patients ...
I likeThatMeow's user avatar
1 vote
0 answers
30 views

Is it possible that inhaling copper vapor, in some form, can help in treating a bacterial or viral infection of the lung? [closed]

There are many studies showing the antimicrobial properties of copper. Based on these properties, is it possible that inhaling copper vapor, in some form, can help in treating a bacterial or viral ...
Erel Segal-Halevi's user avatar
1 vote
0 answers
26 views

Is it possible, and what would be required to modify a ventilator to support two patients concurrently?

An article from a pediatrician on NYT suggested this as a possibility, I'm keen to know if it could be done in an emergency/shortage situation. If so: What would the challenges be from a mechanical/...
user3772748's user avatar
4 votes
1 answer
58 views

Does oxygen supplementation in case of pneumonia cause effects other than possibly preventing hypoxemia?

I've been reading about oxygen supplementation and have a question about the effects of oxygen supplementation in case of pneumonia. Patients with aspiration pneumonitis or pneumonia may progress to ...
Bob Ortiz's user avatar
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1 vote
0 answers
26 views

Can bromhexine decrease severity of respiratory diseases and viral respiratory infections such as COVID-19?

According to this article https://www.vox.com/2020/3/3/21161724/coronavirus-symptoms-covid-19-sars-cough-fever one (less frequent) symptom of COVID-19 is thick mucus from coughs (sputum). Respiratory ...
Bob Ortiz's user avatar
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1 vote
1 answer
62 views

How many ECMO machines does China have?

Is there any data on how many ECMO machines in China? I know that there are about 260 machines in the united states but I have found no data about China on such matter. I want to compare the ...
Seeker001's user avatar
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2 votes
1 answer
2k views

What is 'Rising of the lights' as a death?

In a reddit post showing the 'Causes of death of london in 1632' Theres a few causes that seem weird. But the one the caught my attention is 'Rising of the lights'. The best I've seen is that Lights =...
Fredy31's user avatar
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3 votes
0 answers
27 views

Are there probiotics for upper respiratory tract tissue?

If the lungs can be subject to bacterial infection, why do there not exist beneficial probiotics that live in lung tissue to combat "bad" bacteria proliferation?
paneerlovr's user avatar
1 vote
0 answers
30 views

What's the primary body entrance + surface of infection for catching the flu?

I realize there are multiple ways, but if you tallied up all the people who caught the flu or a cold last year, what would be the majority... Entrance for infection: Mouth Nose Eyes Ears Skin Bio ...
Coldblackice's user avatar
3 votes
0 answers
43 views

Is sinus mucus inhalation a high risk of pneumonia?

I understand that inhalation of food or stomach contents has a very high risk of causing pneumonia. Is routine sinus mucus , not caused by a cold of other illness, likely to cause pneumonia if inhaled ...
blacksmith37's user avatar
4 votes
2 answers
168 views

What is the cause of the vaping-related outbreak of lung injuries?

According to the CDC, there are reports of more than 1000 patients in the US with vaping-associated lung injuries, and 23 deaths have been confirmed. The median age of deceased patients is 49.5 years, ...
Karsten Theis's user avatar
3 votes
0 answers
24 views

Why oligohydramnios leads to hypoplasia of lung?

What I found for the question is that due to - Oligohydramnios reduces the intrathoracic cavity size, thus disrupting fetal lung growth and leading to pulmonary hypoplasia. decreased fetal breathing ...
Physicsapproval's user avatar
2 votes
1 answer
97 views

Inspiratory and Expiratory Muscle Training

I'm interested in the scientific evidence of inspiratory and expiratory muscle training. There are various breathing training devices: According to their description, they enhance "strength and ...
user1170330's user avatar
5 votes
1 answer
92 views

What study materials can a layperson use to gain a deeper understanding of lung cancer?

I am an outsider to the medical sciences, yet now in desperate need of knowledge to help a family member with lung cancer navigate the difficult medical system in our country. I would like to develop ...
Eunice's user avatar
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1 vote
1 answer
58 views

Can tumor size (T) and presence of cancer in the lymph nodes (N) in patients with lung cancer be identified on the first visit?

I am a scientific researcher working on lung cancer. I am trying to develop a machine learning method able to process just few early detection features and then predict if a patient with lung cancer ...
DavideChicco.it's user avatar
3 votes
0 answers
38 views

Does tidal volume have any significance in a pulmonary function test?

In a pulmonary function test (PFT) two important parameters are forced vital capacity (FVC), forced expiratory volume in one sec (FEV1). These are useful for diagnosing obstructive and restrictive ...
TapasX's user avatar
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8 votes
1 answer
344 views

What is the significance of 1 second in calculations of PFTs

During PFTs (Pulmonary Function Testing), we take FEV1 (Forced Expiratory Volume in 1 second) and the divide it by FVC (Forced Vital Capacity). What is so special about FEV in one second, as opposed ...
TapasX's user avatar
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1 vote
0 answers
29 views

What could cause a stroke soon after a lung transplant? Is it even known?

Recently a youtuber died of a thrombotic stroke a week after a lung transplant operation. Skimming over abstracts on Pubmed, it appears that strokes and more generally thrombosis is a frequent ...
BatWannaBe's user avatar
5 votes
0 answers
70 views

When trapped in an air pocket does breathing slowly prolong the amount of time you have? [closed]

So there is roughly 21% oxygen in the air. When taking a "normal" breath you saturate your blood with oxygen and exhale air with roughly 16% oxygen. With that in mind, I am curious if changing your ...
Craig Smith's user avatar
8 votes
3 answers
10k views

How far away from a highway should I live to avoid negative health effects?

Many articles on the internet claim that living near highways can be harmful to one's health. Here is an example: https://www.thestar.com/news/canada/2017/01/05/living-close-to-high-traffic-roads-...
Stephane Beniak's user avatar
1 vote
1 answer
120 views

how to clean ex smokers lungs

I am ex smoker. I smoked for decade and quit smoking. here on [this link]http://hangover-cure.co.uk/smokers-and-ex-smokers/) I have found a solution for cleansing the lung. is it safe and a possibke ...
Bibek Ghimire's user avatar
4 votes
2 answers
121 views

By how much does former smoking reduce one's lifespan?

If someone in their late teens/early 20s smoked 20 cigarettes a day for 5-10 years, and then never smoked again, by approximately how much would that reduce their lifespan?
Victor Mora's user avatar
2 votes
1 answer
876 views

Is it dangerous to inhale agar-agar jelly

I want to make hookah aroma made from agar-agar dissolved in vegetable glycerin, aromas and high quality flavored vodka, but from what I heard, agar-agar expands within the stomach and is as well heat-...
Edenia's user avatar
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1 vote
0 answers
56 views

Amount of Bleeding from Wounded Lungs

For a game, I need at least a vague estimate on how much the lungs will bleed. One person mentioned that a deer shot through both lungs with a hunting rifle would be stopped by the bleeding within 10 ...
Johnny's user avatar
  • 141
2 votes
2 answers
356 views

Is it possible for the lungs and heart to work independently of one another?

I understand that the lungs take in oxygen, pass it to the heart to send throughout the body, and receive CO2 from cellular respiration that the lungs then breathe out. (Oversimplified, I know, but ...
DonielF's user avatar
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2 votes
0 answers
1k views

Is the IQOS heat-not-burn cigarette safe?

I am researching the topic of electronic cigarettes and have recognized that Philip Morris has recently introduced in some markets the IQOS heat-not-burn cigarettes. What is their safety profile in ...
Giuseppe Biondi-Zoccai's user avatar
1 vote
0 answers
26 views

Research paper on living in areas with fresh air after living for more than 20 years in polluted area and impact on health

Are there any reasearch paper which shows impact on health for the person which is moving from the city with high air pollution to the areas with more fresh air (like countryside)? Below are 2 main ...
Shoter's user avatar
  • 111
0 votes
2 answers
77 views

Is it possible to spread cough even if I'm not coughing?

I don't have a cough but sometimes when I go into a place a moment later a person starts to cough. Last time I met my friend that I didn't seen for a long time, having some conversation after a few ...
Shadow Fiend's user avatar
2 votes
0 answers
48 views

Liquid in Lungs? [closed]

So, here I was, eating and drinking in the car because my family didn't have time to stop and eat (we're on vacation) and, anyways, while I was swallowing my strawberry hi-c, I felt this odd, tickly ...
Jaci's user avatar
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1 vote
0 answers
26 views

Have there been any tests of e-cigs vs cigarettes?

After some years of e-cigarette popularity, no labs have yet published side by side comparisons of cell cultures or mice exposed to 10 cigarettes per day, compared to 10 e-cigs. Many labs have ...
bandybabboon's user avatar