Lecture 11 Smith Flashcards
(84 cards)
immunotherapy for allergic rhinitis
AKA allergy vaccine Very effective Long term plan Expensive Some risk: <1 death/million Many never complete the course of tx
rhinitis is marked by presence of what?
sneezing, rhinorrhea, nasal congestion, nasal itching
non allergic rhinitis
• Characterized by chronic presence of one or more o Nasal congestion o Rhinorrhea o Postnasal drainage
causes of nosocomial bacterial rhinitis
extended ICU stays, bur vistins, nasotrach intubation
affects 1:8 ICI patients, fever with unknown origin
- Gram negative: pseudomonas, GNRs (klebsiella, Enterobacter, proteus, serratia) or GP Staph
three types of nonallergic rhinitis
o Vasomotor rhinitis Intermittent symptoms of congestion and/or watery discharge Exaggerated reaction to non specific irritants o Mixed Rhinitis Combo of allergic and non allergic Most common form, 45% of population o Gustatory Rhinitis Episodic condition Prominent watery rhinorrhea • Triggered most often by hot or spicy foods Caused by vagally mediated reflex
hallmark of ature rhinosinusitis? other sx?
FAICIAL PAIN/PRESSURE BENDING FORWARD Symptoms: < 4 weeks (often <10 days) • Nasal congestion/ obstruction • Purulent nasal discharge • Fever and fatigue • Cough • Hyposmia/anosmia • Ear pressure • HA • maxillary tooth discomfort: Won’t have mandibular tooth discomfort because no sinuses by mandible • Halitosis • Facial pain/pressure worse with bending forward • Tenderness to sinus percussion • +/- fever • TM erythema/pus
anatomy of epistaxis
- Classified as anterior or posterior Depending on source
- Anterior far more common
- Large proportion self limited and can be managed definitively in primary care
- Up to 90% occur within vascular watershed area of the nasal septum Known as Kiesselbach’s plexus
- Posterior bleeds
- Sphenopalatine artery supplies posterolateral wall and posterior choana
- Most common source of posterior bleeds
- Posterior bleeds can result in significant hemorrhage
- Sphenopalatine artery supplies posterolateral wall and posterior choana
epistaxis risk factors
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Risk Factors
- Anticoagulated patients: High risk
- Patient with hereditary hemorrhagic telangiectasia disease (Osler-Weber-Rendu)
- Bleeding can be difficult to control in these individuals
- Patient with familial blood dyscrasia
- Platelet disorders: Von Willebrand, Hemophilia
anterior nose bleeds etiology
- By far most common
- Nose picking very common
- Mucosal trauma/irritationàLow moisture content in ambient air results in mucosal dryness and irritation
- Allergic or viral rhinitis à mucosal hyperemia
- Foreign body àEsp. if bleeding accompanied by purulent discharge
- Facial trauma from MVC àBlunt facial impact of ANTERIOR bleed
- Chronic excoriation: CocaineàLeads to small septal perforations
- OTC nasal sprays
- Nasal steroids:
- Alcohol
what are the 4 H1 blockers you can use for allergic rhinitis?
Diphenhydramine, Chlorpheniramine, Hydroxyzine, Brompheniramine
physical exam findings for allergic vs non allergic vs viral rhinitis
o Allergic rhinitis: Nasal mucosa is edematous and pale, o Nonallergic rhinitis: normal in color o Acute viral rhinosinusitis/medicamentosa: beefy red
three subtyupes of chronic rhinitis
- CRS with nasal polyposis: 20-33% of cases
- CRS without nasal polyposis: 60-65% of cases
- Allergic fungal rhinosinusitis: 8-12% of cases
diff btw allergic rhinits and nonalelrgic rhinitis
allergic rhinitis: sneezing, rhinorrhea, nasal congestion, nasal itching nonallergic rhinitis: CHRONIC presence ofnasal congestion, rhinorrhea and/or post nasal drip
ohysicial exam findisngs for epistaxis
- Airway
- Vital signs: Shock?
- Mental Status
- Anterior/Posterior
- Evidence of trauma
- Pt. with recurrent: Look for signs of coagulopathy ecchymoses, petechiae, telangiectatic lesions
- Posterior Nosebleeds Etiology
- Carotid artery aneurysm
* Particular concern for: Pt with prior Hx of head and neck surgery
* Following trauma: Pseudoaneurysm- Most often posterior arise spontaneously
- Nasal neoplasm
- SCC, Common
- Adenoid cystic carcinoma
- Melanoma
- Inverted papilloma
- Carotid artery aneurysm
chronic rhinitis
- Inflammatory disorder of the paranasal sinuses and linings of the nasal passages that lasts 12 weeks or longer
- May begin as nonspecific URI that fails to resolve
- May develop slowly and insidiously over months-years\
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Risk Factors
- Allergic Rhinitis
- Asthma: 20% of pts. have asthma
- CRS patients are typically sensitized to perennial rather than seasonal allergies All year long
- Smoking
- Immunodeficiency
- Defects in mucociliary clearance: CF, Nasal polyps
- Anatomic abnormalities
advantage of 2nd gen H1 over first gen?
less sedating and longer acting loratidine, cetirizine, fexofenadine ect zyrtec, allegra, claratin
most common cause of acute rhinocinusitis
• o Most common is viral infection o Complicated by bacterial infection only 0.5-2% of episodes Most common viruses • Rhinovirus: Most common • Influenza • Parainfluenza
clinical presenration of chronic sinitis with nasal polyps
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Clinical Presentation
- Gradually worsening nasal congestion/obstruction
- Sinus fullness and pressure
- Fatigue
- Posterior nasal drainage
- Hyposmia or anosmia
- Fever and severe facial pain are uncommon
drugs that can cause rhinitis
o Nasal decongestantsRhinitis medicamentosa o Systemic meds AntiHTN: alpha blockers, ACEs, BBlockers, CCBs, HCTZ Erectile dysfunction drugs Some antidepressants, benzos, psychotropics, antiepileptics NSAIDs Estrogens
what Helps distinguish allergic rhinitis from most other forms of rhinitis?
NASAL ITCHING
physical exam findings of allergic rhinitis
o Patients may have allergic shiners o Nasal crease from repeated rubbing nose and pushing tip of nose up with hand in response to nasal itching “Allergic Salute” o Pale or bluish boggy mucosa o Clear mucous o Polyps o Septal issues
differennce in imaging with chronic rhinits subtypes
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Imaging for CRS with NP
- CT shows characteristically marked and bilateral mucosal thickening
- CT density of polyps is similar to that of thickened mucosa
- Polyps are differentiated by shape
- Sinus opacification in the absence of facial pain/pressure/HA
- Typical of CRS with NP and unlikely to represent chronic bacterial infection
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Imaging for CRS without NP
- CT shows sinus opacification or sinus obstruction with non polypoid mucosal thickening of the associated sinus cavity
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Imaging for Allergic Fungal Rhinosinusitis
- CT reveals nasal polyposis with opacification of one or more sinuses
- Characteristic finding
- Hyperattenuated mucin with opacified sinuses
- Indicate dense accumulations of allergic mucin
- Hyperattenuated mucin with opacified sinuses
structural abnormalities caushing rhnitiis
Congenital or acquired: Enlarged adenoids, foreign bodies, septal deviation and perf, nasal polyps, Tumors