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1. the drawing of air or other substances into the airways and lungs; see also aspiration. Called also inspiration.
2. any drug or solution of drugs administered (as by means of nebulizers or aerosols) by the nasal or oral respiratory route.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


1. The act of drawing in the breath. Synonym(s): inspiration
2. Drawing in a medicated vapor with the breath.
3. A solution of a drug or combination of drugs for administration as a nebulized mist intended to reach the respiratory tree.
4. Drawing in or exposed to an agent (gas, vapor, or particulate) that is contained in inspired or inspirable air.
[L. in-halo, pp. -halatus, to breathe at or in]
Farlex Partner Medical Dictionary © Farlex 2012


1. The act or an instance of inhaling.
2. An inhalant.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


Greek, anthrax, a burning coal, charbon, milzbrand Infectious disease An often fatal bacterial infection which occurs when Bacillus anthracis endospores, primarily of grazing herbivore–cattle, sheep, horses, mules–origin enter via skin abrasions, inhalation, or orally Pathogenesis Anthrax endospores germinate within macrophages, become vegetative bacteria, multiply within the lymphatics, enter the bloodstream and cause massive septicemia Clinical URI-like symptoms, followed by high fever, vomiting, joint pain, SOB, internal and external hemorrhage, hypotension, meningitis, pulmonary edema, shock sudden death; intestinal anthrax is caused by ingestion of contaminated meat; cutaneous anthrax is rare Diagnosis ELISA for capsule antigens–95+% senstivity, for protective antigen–72% sensitivity; detection of exotoxins in blood is unreliable Prevention Prophylaxis–6 wks with doxycycline or ciprofloxacin; vaccination, with anthrax vaccine absorbed; decontamination with aerosolized formalin Management Penicillin, doxycycline; if allergic to penicillin, chloramaphenicol, erythromycin, tetracycline, ciprofloxacin See Bacillus anthracis, Cutaneous anthrax, Industrial anthrax, Inhalation anthrax.
Anthrax, clinical forms
Almost universally fatal–due to inhalation of anthrax spores which germinate and produce toxins resulting in pleural effusions, hemorrhage, cyanosis, SOB, stridor, shock, death
Anthrax pneumonia, inhalational anthrax, pulmonary anthrax An almost universally fatal form due to inhalation of 1 to 2 µm pathogenic endospores which are deposited in alveoli, engulfed by macrophages and germinate en route to the mediastinal and peribronchial lymph nodes, produce toxins Clinical Mediastinal widening, pleural effusions, fever, nonproductive cough, myalgia, malaise, hemorrhage, cyanosis, SOB, stridor, shock, death, often accompanied by mesenteric lymphadenitis, diffuse abdominal pain, fever
Once common among handlers of infected animals, eg farmers, woolsorters, tanners, brushmakers and carpetmakers in an era when brushes were from animals Clinical Carbuncle–a cluster of boils, that later ulcerates, resulting in a hard black center surrounded by bright red inflammation; rare cases which become systemic are almost 100% fatal
After ingesting contaminated meat–2 to 5 days; once ingested spores germinate, causing ulceration, hemorrhagic and necrotizing gastroenteritis Clinical Fever, diffuse abdominal pain with rebound tenderness, melanic stools, vomit, fluid and electrolyte imbalances, shock; death is due to intestinal perforation or anthrax toxemia
Uncommon, follows ingestion of contaminated meat Clinical Cervical edema, lymphadenopathy–causing dysphagia, respiratory difficulty
Anthrax meningitis
A rare, usually fatal complication of GI or inhalation anthrax with death occurring 1 to 6 days after onset of illness Clinical Meningeal symptoms, nuchal rigidity, fever, fatigue, myalgia, headache, N&V, agitation, seizures, delirium, followed by neurologic degeneration and death
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.


1. The act of drawing in the breath.
Synonym(s): inspiration.
2. Drawing a medicated vapor in with the breath.
3. A solution of a drug or combination of drugs for administration as a nebulized mist intended to reach the respiratory tree.
[L. in-halo, pp. -halatus, to breathe at or in]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


1. The act of drawing in the breath.
Synonym(s): inspiration.
2. Drawing in a medicated vapor with the breath.
[L. in-halo, pp. -halatus, to breathe at or in]
Medical Dictionary for the Dental Professions © Farlex 2012

Patient discussion about inhalation

Q. How can I know the inhaler is empty? My 8 years-old boy has asthma and he takes steroids with inhaler. Every time it runs out of med we get a prescription for a new one. Is that OK? A friend that her son is treated with similar inhaler told me that towards the end it no longer delivers enough medication. How can I know I should get a new one?

A. Here is a video you may find usefull:
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Q. What are the side effects for the regular asthma inhalers? I am taking an inhaler (non-steroid one) for my asthma and I wanted to know what can be possible side effects to this treatment.

A. Simple inhalers that contain a material that helps with keeping the bronchi not constricted, have side effects that are related to the sympathetic nervous system- such as slight tremor, small increase in heart rate or blood pressure, but these are all in greater risk when taking in a not-inhaled way. Patients must be cautioned against using these medicines too frequently, as with such use their efficacy may decline, producing desensitization resulting in an exacerbation of symptoms which may lead to refractory asthma, meaning that the attack might not be relieved by these medications anymore.

Q. Is a Proventil Inhaler cheaper by you than Secirity Blue? I pay $60. with Security Blue now. Is it cheaper with you for a three months supply ?

A. here is a drug prices comparing site-

but i couldn't find there that other drug you were talking that it's name?

More discussions about inhalation
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References in periodicals archive ?
Table 5 shows the significant changes of EEG power spectrum values during the uninasal inhalation of AEO through right nostril.
Effect of Inhalation of AEO on EEG Activity: Gender Difference.
Many EEG studies have demonstrated significant alterations in the EEG spectrum values during the inhalation of aroma [5].
In the present study, the binasal inhalation of AEO shows significant increase of absolute alpha wave in left frontal and right parietal regions and absolute fast alpha wave in right parietal region (Table 3 and Figure 1).
Those already using inhalation devices, Group-A, were asked to demonstrate the technique for evaluation of its correctness before a panel of three expert observers.
Those with no previous experience of using inhalation devices, Group-B, were asked to read the instructions thoroughly, practice the technique and give demonstration for evaluation.
All above patients who continued to use inhalation devices were evaluated during follow ups at regular intervals of 15 days for 3 months.
The technique of inhalation by MDI and DPI was divided into six steps and each step had a score according to its importance.
Table 1: Clinical features of patients with pin inhalation at presentation
Foreign body inhalation is a rare occurrence in young and adult27.
The pattern of foreign bodies inhalation in tracheobronchial tree.
Foreign bodies inhalation. J R Coil Surg Edinb l980;25: 104-9.