Foreign-body sentence example
Again, if more than 2% of carbon is present, it passes readily into the state of pure graphitic carbon, which, in itself soft and weak, weakens and embrittles the metal as any foreign body would, by breaking up its continuity.
If this carbon is all present as graphite, so that in cooling the graphite-austenite diagram has been followed strictly (§ 26), the constitution is extremely simple; clearly the mass consists first of a metallic matrix, the carbonless iron itself with whatever silicon, manganese, phosphorus and sulphur happen to be present, in short an impure ferrite, encased in which as a wholly distinct foreign body is the graphite.
Thus the poison of various insects induces in plants the cellular new formation known as a gall-nut; a foreign body implanted in a limb may become encysted in a capsule of fibrous tissue; septic matter introduced into the abdomen will cause proliferation of the lining endo(epi)thelium; and placing an animal (salamander, Galeotti) in an ambient medium at a higher temperature than that to which it is accustomed naturally, increases the rapidity of celldivision of its epithelium with augmentation of the number of karyokinetic figures.
This was similar with respect to quinsy drainage and foreign body removal from the ear, nose and throat.
Instead of ignoring pet dander or pollen, it mistakenly identifies it as a foreign body such as a virus, and trigger's the body's immune system response to combat it.Advertisement
Following implantation, some people may experience sore throat, swelling, a metallic taste in the mouth, or the sensation of having a foreign body lodged in the soft palate.
It may be a gas bubble, a blood clot, a fat globule, a mass of bacteria, or other foreign body that forms somewhere else and travels through the circulatory system until it gets stuck.
However, children and infants are at increased risk of choking and foreign body airway obstruction due to immature airway and dental anatomy, distraction and play during eating, and a natural tendency to put objects into their mouths.
Sometimes, pieces can be aspirated into the lungs, and even though breathing returns to normal, wheezing, chest pain, persistent cough, and pneumonia can develop within a few days due to the foreign body in the lung.
For children, infants, and adolescents who are unconscious, choking and foreign body obstruction can be diagnosed by attempting to give rescue breaths.Advertisement
Oxygen deprivation from a foreign body airway obstruction can result in permanent brain damage or death in four minutes or less.
If the foreign body cannot be expelled from the child's airway using the Heimlich maneuver, cardiac and/or respiratory arrest may occur, and the child may stop breathing.
Any redness or foreign body sensation, especially if only one eye is affected, should be evaluated promptly for a corneal abrasion.
These areas may also be rinsed with saline to remove any small foreign body that may be a source of the abrasion.
Usually the patient either awakens with sharp pain or is bothered by a foreign body sensation that is worse in the morning.Advertisement
X-ray studies may be ordered to identify the location of a foreign body if it is metal, such as a pellet from a BB gun or air gun, or to evaluate the nasal area for evidence of repeated fractures when abuse is suspected.
The symptoms of adult inclusion conjunctivitis are a foreign body sensation, watery eyes, and eyelids that stick together upon awakening.
For example, children may insert a foreign body in their ear canal and not mention it to their parents.
If the otitis externa infection is caused by the presence of a foreign body in the ear, the infection will not improve until the foreign body is removed.
Older children and teenagers may accidentally swallow a nonfood object or ingest a foreign body that gets stuck in the throat, like a fish bone or toothpick.Advertisement
The symptoms of foreign body ingestion or insertion depend in part on the organ or part of the body affected.
The specific symptoms of foreign body ingestion vary somewhat depending on the item and its location in the body.
He or she may order an x ray of the neck, chest, and/or abdomen to locate a foreign body in the esophagus, airway, or lower digestive tract.
Blood tests are not usually necessary unless the doctor suspects that the foreign body has caused an infection or bleeding.
If the foreign body has penetrated the deeper layers of the eye, an eye surgeon will be consulted for emergency treatment.Advertisement
The prognosis of foreign body ingestion or insertion varies according to the nature of the object and its location in the body but is quite good in most cases.