George Nicholas Marcells

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INTRODUCTION Acoustic Rhinometry, Rhinomanometry, Nasal Spirometry and Nasal Peak Inspiratory flow (NPIF) all measure subtly different constructs of nasal function. All have limitations but NPIF is simple and quick to integrate into clinical practice. The minimum clinically important difference (MCID) for an outcome measure is an estimate of the smallest(More)
OBJECTIVE High-density tissue bone matrix (TBM) sponge is a homograft derived from human cadaver. It is reported to be osteoinductive. The objective of this paper is to measure the bone formation and cosmetic effect of TBM sponge implanted in the nasal spine area of patients undergoing rhinoplasty with retraction of this region and loss of nasal tip(More)
There are two lasers for resurfacing. The erbium:YAG laser and the CO2 laser both have different physical and physiologic differences when striking the skin. Therefore, each laser gives a different result. This article reviews the use of the Sharplan Silktouch CO2 laser for 4 years and the erbium:YAG laser for 1 year. In the last year, we have performed 40(More)
IMPORTANCE External nasal valve dysfunction (ENVD) is a common cause of nasal obstruction. Although many techniques are described to help correct ENVD, evidence of the objective changes in the airway achieved by these interventions is mainly unknown. OBJECTIVE To document the airway changes in patients with ENVD by comparing subjective and objective(More)
IMPORTANCE External nasal valve dysfunction (EVD) is a common cause of nasal obstruction. OBJECTIVE To evaluate costal cartilage lateral crural strut grafts vs cephalic crural turn-in to support the weak lateral crus in patients with EVD. DESIGN, SETTING, AND PARTICIPANTS In this prospective cohort study, patients with clinically diagnosed EVD were(More)
BACKGROUND Techniques for inferior turbinate reduction vary from complete turbinectomy to limited cauterization. Surgical methods differ on the degree of tissue reduction and reliance on surgical tissue removal vs tissue ablation. The outcome and morbidity from 3 different turbinate techniques are compared. METHODS A randomized double-blinded study was(More)
AIM To assess the clinical and radiological characteristics of the posterior prolongation of the cartilaginous nasal septum, an under-utilised source of autologous cartilage for nasal reconstruction. MATERIALS AND METHODS Consecutive patients undergoing primary, external approach rhinoplasty were included. The septal cartilage was assessed(More)
BACKGROUND Effective mucus lavage and delivery of topical pharmaceuticals are central to successful management of chronic rhinosinusitis (CRS). The frontal sinus remains difficult to penetrate with topical therapies. This study evaluates the benefit of Draf III frontal dissection compared to traditional Draf IIa for distribution of topical therapies. (More)
BACKGROUND The external approach for septoplasty is an important surgical technique to manage severe septal deviations, caudal deformities, and mid-dorsal abnormalities when a simple endonasal approach may not suffice. The procedure is longer in duration and draws on more resources than endonasal septoplasty. The outcome reporting of the external approach(More)
BACKGROUND Clinicians who manage nasal obstruction often comment on the shape and size of the nasal valve (NV) area. However, correlation of the symptoms of obstruction, nasal airflow dynamics, and the endoscopic appearance of the anatomic cross-sectional area of the NV is poorly understood. Endoscopic imaging and calculation of the NV area is investigated(More)