Investigative Rhinology

Glenis K. Scadding, Valerie J Lund

• Publisher: CRC Press
• Year: 2004
• ISBN:
  9781135414696
• Edition: 1
• Topic: Médecine
• Subtopic: Théorie, pratique et référence de la médecine

Rhinitis is the most common immunological disorder in man, with a marked effect on quality of life and significant co-morbid associations. Consequently, it is necessary to take rhinitis seriously and to attempt as precise a diagnosis as possible, if treatment is to be successful. This comprehensive text provides information on rhinitis, including such topics as the importance of rhinitis and its causes. It covers the most up-to-date methods of diagnosis such as airway testing, mucociliary clearance, imaging and more. Written by internationally respected experts, Investigative Rhinology provides a full and up-to-date guide to the investigations to be undertaken.

1
The importance of rhinitis

Rhinitis which is defined clinically (Box 1.1), is the commonest immunological disorder in man. Recent figures suggest that it is a global problem affecting between 10 and 25% of individuals in different countries with increasing prevalence (Figure 1.1).

Box 1.1 Definition of rhinitis.

Rhinitis is an inflammatory disorder of the nasal mucosa characterized by two or more of the following symptoms:

rhinorrhoea (anterior and/or posterior)

blockage

itching/sneezing

Table 1.1 Rhinitis and asthma: quality of life.

Classically rhinitis has been described as a disease of no importance ‘except to those who suffer from it’. In fact the symptoms have a marked effect upon quality of life similar to that experienced by sufferers with mild to moderate asthma and chronic back pain (Table 1.1). It is also a cause of missed attendance at both workplace and school (3–4% of the United States population), and of reduced productivity at both places (30–40%). The economic impact of rhinitis, or rhinosinusitis as it should be known since the sinus mucosa is nearly always involved, is significant: an estimated $5 billion per annum in the United States in 1996.

Rhinitis has significant comorbid associations related to its intimate connections between the nose, the sinuses, the middle ear and the lungs (Figure 1.2). These include asthma, sinusitis, pharyngitis, otitis media with effusion and sleep problems. Most is known about the rhinitis–asthma link (Box 1.2 and Figure 1.3).

The mechanisms of interaction between the nose and chest are not fully elucidated – certainly the ciliated pseudocolumnar respiratory epithelium is continuous from just inside the nose to the smaller bronchi and is likely to react in similar fashion all along its length. Other factors probably include nasal obstruction leading to mouth breathing and loss of the normal filtration, warming and humidification of inspired air. The passage of postnasal secretions containing inflammatory or infectious mediators is unlikely to cause significant lower respiratory problems since it normally passes into the posterior pharynx and is swallowed rather than being inhaled. Naso-sino-bronchial reflexes exist; systemic connections between the nose and lungs involving the production and release of eosinophil precursors bearing high affinity IL-5 (interleukin-5) receptors have been demonstrated. Nitric oxide, predominantly produced in the sinuses and upper respiratory tract, may also be relevant (see Chapter 7).

Figure 1.1 The global prevalence of seasonal allergic rhinitis in 13–14-year olds: ISAAC. Data from the International Study of Asthma and Allergies in childhood. (Source: Strachan et al. 1997.)

Figure 1.2 Nasal connections.

Figure 1.3 Rhinitis, both atopic and non-atopic, is a risk factor for subsequent asthma. (Source: Leynaert et al. 1999.)

Box 1.2 The rhinitis/asthma link.

Most asthma patients also suffer from rhinitis

Rhinitis, both allergic and non-allergic is a risk factor for the development of asthma (Figure 1.3)

Most asthma exacerbations start with upper respiratory tract inflammation – often viral, allergic or both

Rhinitis causes bronchial hyper-reactivity (BHR)

Treatment of rhinitis can decrease BHR and symptoms of asthma and reduce the need for emergency treatment

Thus, it is necessary to take rhinitis seriously to attempt as precise a diagnosis as possible, and to aim for successful treatment. The ARIA (Allergic Rhinitis and its Impact on Asthma, (Figure 1.4) guidelines provide a treatment plan for allergic rhinitis based on timing and severity (Figures 1.5 and 1.6).

Figure 1.4 The ARIA (Allergic Rhinitis and its Impact on Asthma) logo.

Figure 1.5 Classification of allergic rhinitis

Figure 1.6 The treatment plan for allergic rhinitis based on severity and duration according to the ARIA guidelines.

References

Bousquet J, Bullinger M, Fayol C, Valentin B, Bustin B (1994a) Assessment of quality of life in patients with perennial allergic rhinitis with the French version of the SF-36 Health Status Questionnaire, J Allergy Clin Immunol 94(2pt1): 182–8.

Bousquet J, Khani J, Dhivert H et al. (1994b) Quality of life in asthma I. Internal consistency and validity of the SF-36 questionnaire, Am J Resp Crit Care Med 149(2Pt1): 371–5.

Leynaert B, Bousquet J, Neukirch C, Liard R, Neukirch F (1999) Perennial rhinitis: an independent risk factor for asthma in nonatopic subjects: results from the European Community Health Survey, J Allergy Clin Immunol 104(2Pt1): 301–4.

Strachan D, Sibbald B, Weiland S et al. (1997) Worldwide variations in prevalence of symptoms of allergic rhinoconjunctivitis in children: the International Study of Asthma and Allergies in Childhood (ISAAC), Pediatr Allergy Immunol 8: 161–76.

Further reading

Bousquet J, van Cauwenberge P, Khaltaev N and the ARIA workshop panel (2001) World Heath Organization Initiative: Allergic Rhinitis and its Impact on Asthma (ARIA), J Allergy Clin Immunol 108: 147–334.

Ray NF, Baraniuk JN, Thamer M et al. (1999) Healthcare expenditures for sinusitis in 1996: contribution of asthma, rhinitis and other airway disorders, J Allergy Clin Immunol 103: 409–14.

Table 1.1 Rhinitis and asthma: quality of life.

Health concept	Mean quality of life score (scale: 1–100)
	Asthma (n = 252)	Rhinitis (n = 111)
Physical functioning	80	89
Social functioning	84	73
Role limitation (physical)	66	61
Role limitation (emotional)	70	64
Mental health	66	65
Energy/fatigue	59	55
Pain	74	77
Change in health (1 year)	55	50
General health perception	57	62

1. Am J Respir Crit Care Med 1994; 149: 373

2. J Allergy Clin Immunol 1994; 94: 186

(Source: Bousquet et al. 1994a, b.)

2
Causes of rhinitis

The recent ARIA (Allergic Rhinitis and its Impact on Asthma)...

Table of contents

• Cover Page
• Title Page
• Copyright Page
• Preface
• 1 The importance of rhinitis
• 2 Causes of rhinitis
• 3 Making a diagnosis: history
• 4 Examination
• 5 Investigations
• 6 Airway tests
• 7 Tests of the mucociliary apparatus, inflammation and cystic fibrosis
• 8 Imaging
• 9 Other tests
• Appendix 1
• Appendix 2
• Appendix 3
• Appendix 4
• Appendix 5
• Appendix 6
• Appendix 7