Asthma and Its Pathophysiological Structure

Asthma Complications: Chronic and acute Asthma
Describe the pathophysiological mechanisms of chronic asthma and acute asthma exacerbation.
Inflammation plays a key function in the asthma’s pathophysiology. As specified in the asthma’s definition, airway inflammation comprises an interaction of countless cell as well as numerous mediators with the airways which ultimately leads to the distinctive pathophysiological characteristics of the disease: airflow limitation and bronchial inflammation which result in recurrent incidents of breath shortness, wheeze and cough. The procedures by which these active events take place as well as cause clinical asthma continue to be under investigation and research. Additionally, while unique asthma phenotypes exist (for example, intermittent, persistent, exercise-triggered, aspirin-receptive, or perhaps severe cases of asthma), airway inflammation is still a regular pattern. The asthma’s airway inflammation pattern, nonetheless, doesn't always change based upon illness persistence, severity or illness duration. The cellular shape as well as the result of the essential cells in asthma are very consistent (National Asthma Education and Prevention Program et al, 2007). This cellular shape needs to be identified and recognized in all patients even those like Bradley Wilson who didn’t show any symptoms of it but ended up wheezing and dying due to an asthmatic attack.
Asthma’s severe exacerbation ought to be properly distinguished from feeble asthma control. For severe asthma, individuals will display escalating shortness of breathing, coughing, chest tightness, and sometimes even wheezing. In comparison, feeble asthma control generally provides with a diurnal variability of airflow and it is an attribute that is generally not seen in an acute exacerbation. However, in the case of Dynasty Reese, this distinction was not clearly made and thus resulted in her death. Different clinical symptoms as well as signs might help the clinician in figuring out the acute asthma severity. Signs of serious asthma include serious chest tightness, cough (with or perhaps with no sputum), air hunger sensation, failure to lie flat, severe fatigue as well as insomnia. The symptoms of serious asthma include usage of supplementary respiration muscles, chest hyperinflation, sweating, tachycardia, tachypnea, diaphoresis, obtundation, concerned look, wheezing, problems in talking and issues in leaning and lying down. Distorted mental health, with or perhaps devoid of cyanosis, is a worrying indicator as well as immediate emergency attention as well as hospitalization are needed (Kaliner, Fergeson and Lockey, 2015).
Chest radiographs are often, not needed, for acute asthma examination in case the chest examination shows no abnormal results apart from the expected symptoms as well as clinical indicators connected with an acute asthma exacerbation. The forced expiratory volume in a single second (FEV) is calculated via spirometry to evaluate the air volume exhaled in time and it is probably the most vulnerable airflow obstruction test. Therapy is actually used not just on examination of lung function factors but on the efficacy and clinical findings of preceding therapy. Asthma’s seasonal exacerbation in a pollen-receptive individual is much more easily treatable compared to an exacerbation initiated by a viral disease. Physician awareness of their patients will evoke if a systemic corticosteroid is needed or perhaps an exacerbation may be handled on extremely high inhaled corticosteroids doses (Kaliner, Fergeson and Lockey, 2015).
Key therapy options comprise:
1. SABA; inhaled by nebulization or via MDI
2. Anticholinergics; inhaled by nebulization or via MDI
3. Corticosteroids; inhaled, parenteral or even oral
4. Oxygen
Consequential therapy alternatives might include:
1. Epinephrine; Subcutaneous (SQ) or Intramuscular (IM)
2. Heliox - driven albuterol
3. Magnesium sulfate; parenteral
4. Mechanical ventilation together with Intubation (Kaliner, Fergeson and Lockey, 2015)
In accordance to the assertions made by McCance and Huether (2006), one of the primary factors that determines the presence of asthma is the T-lymphocyte phenotype. Hence the case of chronic asthma can be expected in cases where we see a recurrent pattern of episodic respiratory symptoms such as wheezing, shortness of breath, and coughing. The frequency of these symptoms can of course vary and so can their duration and stage with consequences like inability to sleep lying down and uneasiness during sleep. Asthmatic symptoms might be more prominent during or after exercise (Medecins sans Frontieres, n.d). Some other pathophysiological aspects to consider include: chest auscultation that potentially leads to sibilant wheezes; atopic disorders or hereditary history of atopy. Those cases that have a consistent problem with asthma need durable treatment that is primarily based on inhaled corticosteroids (Medecins sans Frontieres, n.d). Another factor that plays an important role in making breathing difficult for asthma patients is the increased exposure to of carbon dioxide (Paco2) which could lead to respiratory failure, lowered blood pH levels caused by respiratory acidosis (Zaoutis & Chiang, 2007).
Explain how the factor you selected might impact the pathophysiology of both disorders.
Genetics:
Asthma vulnerability and stage or extent is directly based on the mechanism or relationship of the genetics/genomics nature of the individuals and the overall dynamics of the environment that they experience over the course of a lifetime. The vulnerability towards asthma is thus related to the genes of immunity and the risk factors in the environment like extreme cold or pollen that can cause the onset of asthma. Research shows that it is a certain set of genetic structures and their reactions to the patterns in the environment that cause different levels of bronchial inflammation and the extent of damage to the tissue thus varies as well resulting in abnormal pathophysiological patterns and restructuring of the respiratory wall (Meyers, Bleecker, Holloway & Holgate, 2014). Once asthma is diagnosed, therapy and treatment begins. The usual method for treatment is to reduce the overall immediate and extensive inflammation and manage the emergence of acute exacerbations (GenePlanet, n.d). This is done using the following medications as they seem more effective than others:
· Short-acting medicines that include the likes of bronchodilators for emergency attacks and recovery options
· Long-acting medications that are to be used daily over a course of time, and that can be changed with the change in the condition of the disease, include anti-inflammatory drugs like corticosteroids (GenePlanet, n.d).
Below are example of typical mind maps for acute and chronic asthma
Acute asthma mind map

Chronic asthma mind map




References
GenePlanet. (n.d.). Asthma. Retrieved January 02, 2018, from https://www.geneplanet.com/genetic-analysis/list-of-analyses/asthma.html
McCance, K.L., Huether, S.E. (2006). Pathophysiology: A Biologic Basis for Disease in Adults and children. Philadelphia: Elsevier Mosby. MerchMedicus Models: Asthma. Retrieved May 21, 2008, from http://www.merckmedicus.com/pp/us/hcp/diseasemodules/asthma/pathophysiology.jsp
Meyers, D. A., Bleecker, E. R., Holloway, J. W., & Holgate, S. T. (2014). The Genetics of Asthma: Towards a Personalised Approach to Diagnosis and Treatment. The Lancet. Respiratory Medicine, 2(5), 405–415. http://doi.org/10.1016/S2213-2600(14)70012-8
Medecins sans Frontieres. (n.d.). Chronic Asthma. Retrieved January 02, 2018, from https://medicalguidelines.msf.org/viewport/CG/english/chronic-asthma-16689583.html
National Asthma Education and Prevention Program, Third Expert Panel on the Diagnosis and Management of Asthma. (2007). Section 2, Definition, Pathophysiology and Pathogenesis of Asthma, and Natural History of Asthma.
Zaoutis, L. B., & Chiang, V. W. (2007). Comprehensive Pediatric Hospital Medicine E-Book. Elsevier Health Sciences.
Kaliner, A. M., Lockey, R., & Fergeson, J. (2015). Acute Asthma. Retrieved January 02, 2018, from http://www.worldallergy.org/professional/allergic_diseases_center/asthma/