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1.lecture sinusitis (1)

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this presentation is about paranasal sinus infection,clinical feature and management

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1.lecture sinusitis (1)

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  1. PARANASAL SINUSES PARA = AROUND NASAL = NOSE SINUS = EMPTY SPACE

  2. B

  3. B

  4.  Maxillary sinus first to be developed Antrum of Highmore. largest of all paranasal sinuses Pyramidal shaped , Capacity of 30ml.

  5.  Maxillary sinus first to be developed Anterior wall – formed by facial surface of maxilla Posterior wall – formed by infratemporal surface of maxilla Superior wall – formed by orbit floor Inferior wall – formed by alveolar and palatine processes of the maxilla

  6. Maxillary sinus first to be developed Anterior wall – formed by facial surface of maxilla Posterior wall – formed by infratemporal surface of maxilla Superior wall – formed by orbit floor Inferior wall – formed by alveolar and palatine processes of the maxilla

  7. OSTIUM OF MAXILLARY SINUS Opens in the Posteroinferior end of hiatus semilunaris. The ostium is located on the medial wall near the roof of the maxillary sinus and is approximately 2.4mm in diameter.  Close to roof of sinus. Unfavorable for drainage of sinus. In children the floor lies at or above the level of the floor of the nasal fossa. In adults it lies about 1.25cm below the floor of the nasal fossa

  8. Sphenoidal sinus is undevoleped and non-aereated at birth. Aeration begins at age 3years and then progresses posteriorly.

  9. Frontal sinus is last sinus to develop ,as a direct continuation or by upward migration of anterior ethmoidal air cells. Remains as a small blind sac within the frontal bone till 2 years of age,from 2 to 9 years secondary pneumatization of frontal bone proceeds

  10. Frontal Sinuses The frontal sinuses are between the outer and the inner tables of the frontal bone, posterior to the superciliary arches and the root of the nose .Frontal sinuses are usually detectable in children by 7 years of age. Each sinus drains through a frontonasal duct into the ethmoidal infundibulum, which opens into the semilunar hiatus of the middle nasal meatus. The frontal sinuses are innervated by branches of the supraorbital nerves (CN V1).

  11. Ethmoid air cells- develop during puberty and develop slowly until approximately 17-18 years of age. Pneumatization of this sinus begins during the 4th year of childhood and gets completed by the 17th year of life

  12. The anterior ethmoidal cells drain directly or indirectly into the middle nasal meatus through the ethmoidal infundibulum. The middle ethmoidal cells open directly into the middle meatus and are sometimes called ‘bullar cells’ because they form the ethmoidal bulla, a swelling on the superior border of the semilunar hiatus. The posterior ethmoidal cells open directly into the superior meatus. The ethmoidal cells are supplied by the anterior and posterior ethmoidal branches of the nasociliary nerves

  13. First sinus developed ______________? Maxillary sinus Frontal sinus Sphenoidal sinus Ethmoidal sinus

  14. The major function of the sinuses is to heat, humidify, and clean the air we breathe sinuses complete all of these tasks through the creation of mu-cus, the sticky substance The sinuses normally produce between 1 and 2 liters of mucus per day. Mucus is made up of 95 percent water and has a slightly acidic pH. Healthy mucus is usually clear and watery, but it can become thickened and viscous when we are experiencing an infection. When we are sick or are suffering from allergies, mucus production increases. When your body produces this thicker mucus, you may experience the feeling of postnasal drip. This term is misleading, because normal, healthy mucus is always dripping down into your throat, but you are not aware of it. It is only when the mucus becomes thickened because of an infection that you notice its existence. Mucus adds moisture to the air taken in through the nose so the lungs receive air with the proper humidity. It also lubricates the membranes of our nose. Mucus contains salts and glycoproteins,

  15. The occipitomental (OM) or Waters view i

  16. When positioning for a Caldwell view of the skull the? Caldwell's view (or Occipitofrontal view) 

  17. submentovertex view

  18. Transillumination of the maxillary sinuses is performed in a darkened room. A bright light is placed in the patient's mouth .

  19. Palpation to elicit paranasal sinus tenderness Maxillary: over the canine fossa Anterior ethmoid: medial to medial canthus Frontal: Floor of sinus at the superomedial aspect of the orbit or tap over its anterior wall on the forehead

  20. 32. Radiological finding of sinusitis include all of the following EXCEPT: a. Bone destruction . b. Opacity of the affected sinus. c. Fluid level. d. Mucosal thickening.

  21. A

  22. 33. Unilateral chronic maxillary sinusitis is usually of: a. Nasal origin. b. Dental origin. c. Orbital origin. d. All of the above.

  23. B

  24. 49. Periodic headache is a characteristic symptoms in: • Frontal sinusitis • . b. Ethmoidal sinusitis. • c. Maxillary sinusitis. • d. Non of the above.

  25. A

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