What is the Difference Between Bronchospasms and Laryngospasms?

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The main difference between bronchospasms and laryngospasms lies in the location of the affected airways:

  • Bronchospasms affect the bronchi, which are the airways that connect the windpipe to the lungs. These spasms occur when the muscles that line the bronchi tighten, resulting in wheezing, coughing, and other symptoms. Bronchospasms are often caused by asthma, allergens, irritants, or other medical conditions.
  • Laryngospasms affect the vocal cords, which are two bands of tissue housed inside the larynx. These spasms cause the vocal cords to suddenly close up when taking a breath, blocking the flow of air into the lungs. Laryngospasms are typically caused by other conditions like asthma, stress, or hypersensitivity and are not usually dangerous or life-threatening.

Both conditions result in sudden, frightening spasms and can temporarily affect a person's ability to breathe and speak. However, laryngospasms are rare and usually last for fewer than 60 seconds, while bronchospasms can be longer-lasting and may require medical intervention.

Comparative Table: Bronchospasms vs Laryngospasms

Here is a table comparing the differences between bronchospasms and laryngospasms:

Feature Bronchospasms Laryngospasms
Definition A narrowing of the airways due to the contraction of smooth muscles in the bronchial wall A narrowing of the airways due to the sustained closure of the vocal cords
Occurrence Occurs in the bronchi, which are the airways connected to the lungs Occurs in the larynx, which is the upper airway
Causes - Allergens, asthma, COPD, infections affecting the bronchi, general anesthesia, presence of a foreign body in the airway, adverse effects of certain drugs, exercise - Upper respiratory infections, recent cold, anesthesia, aspiration, irritants, allergens
Symptoms - Difficulty breathing, wheezing, chest tightness, coughing - Partial or complete loss of the patient's airway, stridor, gagging, coughing, difficulty breathing
Treatment - Fast treatment to reduce symptoms, including medications like bronchodilators - Basic airway maneuvers and adjuncts, medications like racemic epinephrine, intubation, humidification

Bronchospasms occur in the bronchi, which are the airways connected to the lungs, while laryngospasms happen in the larynx, which is the upper airway. Both bronchospasms and laryngospasms involve the contraction of smooth muscles, but they affect different parts of the airway system.