theory dnb ent
- Jan- 2020 -19 January
Photodynamic therapy – DNB ENT THEORY
Photodynamic therapy1Form of phototherapy using nontoxic light-sensitive compounds that are exposed selectively to light, whereupon they become toxic to targeted malignant and other diseased cells. Recognised as a treatment strategy which is both minimally invasive and minimally toxic.ComponentsMost modern PDT applications involve three key components: 1 Photosensitizer2 Light source3 Tissue oxygen The…
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Cogan’s syndrome – DNB OSCE / VIVA/ DNB ent Theory
Dr. David Cogan.Cogan’s syndrome (CS) is defined as nonsyphilitic interstitial keratitis (an inflammation of the eye) and bilateral audiovestibular deficits (hearing problems and dizziness). It was first described in Morgan and Baumgartner in 1934, and Cogan reported 5 more cases in 1945. Dr. David Cogan was a prolific writer and his…
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External rhinoplasty – DNB Theory Long Question/ VIVA/ OSCE
External rhinoplasty – DNB Theory Long QuestionSpecific indications for the external approach in rhinoplasty include:Congenital deformities such as the cleft nose;Extensive revision surgery;Severe nasal trauma;Elaborate reduction & augmentation procedures;Marked tip deformities;The need for extra tip rotation;The correction of extreme overprojection;Situation where assessment of the exact pathology is difficult.It has been…
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