It is a strong indication that someone is near death, it can also be produced by other problems that cause interference with the swallowing reflex, such as brain injuries.
Rattling noises: Introduction. Rattling noises: are the clicking, rattling, or crackling noises heard on auscultation of the lung caused by thepopping open of small airways and alveoli collapsed by fluid, exudate, or lack of aeration during expiration.  Get help from a doctor now ›. Secretions: The rattling sound from lungs is generally due to vibrations produced by retained secretions (mucus/phlegm) in the airways (breathing tubes) in your lungs. Lung (Definition). Deoxygenated blood enters the lungs from the right side of the heart and travels to the lungs. When you inspire, oxygen flows into the lungs, transverses the capilliares and attaches to hemoglobin down a gradient. At the same time, co2 diffuses into the capilaries and is expelled with exhalation. Interventions to treat noisy breathing, or 'death rattle': the unpleasant, gurgling breathing occuring in many patients who are about to die. Approximately half of those relatives and friends who witness it, as well as hospital staff, find the noise of 'death rattle' distressing.  These sounds come from the lungs when you breathe in or breathe out. These sounds can be heard using a stethoscope or simply when breathing. Breath sounds can indicate problems within the lungs such as obstructions, inflammation, or infection. An abnormal breath sound can indicate fluid in the lungs or asthma. Breath sounds are an important part of diagnosing many different medical conditions. The rattling and whistling noise is cause by partially blocked airways. When you pucker you lips and blow, you hear a wheezing sound coming through the small opening in the lips. When air goes through a small opening in your nose or airway it can make a sound like that. The rattling is like blowing through a straw into milk. the wind is flowing through thick mucus. I doubt you have cancer. I would put money on a sinus infection or rhinitis. A normal breath sound is similar to the sound of air. A doctor can hear normal breath sounds by placing the stethoscope on your chest, back, collarbone, and ribcage. A stethoscope can also pick up abnormal breathing sounds. These sounds are described as: 1  rhonchi (snoring sounds). 2  rales (clicking, rattling, bubbling). Breath sounds can indicate problems within the lungs such as obstructions, inflammation, or infection. An abnormal breath sound can indicate fluid in the lungs or asthma. Breath sounds are an important part of diagnosing many different medical conditions. A rattling cough is a condition which causes a rustling, rattling, or wheezing sound in the chest or throat accompanied by a chronic cough. The troublesome noises are generally caused by mucus accumulation in the chest or by sinus drainage into the throat. Most rattling coughs are remnants of a congestive illness such as bronchitis. A rattling cough is accompanied by troublesome chest or throat sounds. A rattling cough may be caused by chest congestion. A dry cough might be treated using a humidifier. A rattling cough may be accompanied by laboring breathing, depending on the type of infection From Wikipedia, the free encyclopedia. A death rattle, known clinically as terminal respiratory secretions or simply terminal secretions, is a sound often produced by someone who is near death when fluids such as saliva and bronchial secretions accumulate in the throat and upper chest. While death rattle is a strong indication that someone is near death, it can also be produced by other problems that cause interference with the swallowing reflex, such as brain injuries. It is sometimes misinterpreted as the sound of the person choking to death, or alternatively, that they are gargling
http://www.rightdiagnosis.com/sym/rattling_noises.htm https://www.healthtap.com/topics/rattling-sound-in-lungs http://www.cochrane.org/CD005177/SYMPT_interventions-to-treat-noisy-breathing-or-death-rattle-the-unpleasant-gurgling-breathing-occuring-in-many-patients-who-are-about-to-die http://www.healthline.com/health/breath-sounds https://answers.yahoo.com/question/index?qid=20090325035623AAIDCZn http://www.healthline.com/health/breath-sounds http://www.wisegeekhealth.com/what-is-a-rattling-cough.htm https://en.wikipedia.org/wiki/Death_rattle
what is rattle breathing