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Dive into the research topics where Roland Giger is active.

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Featured researches published by Roland Giger.


JAMA | 2008

Dexamethasone and Risk of Nausea and Vomiting and Postoperative Bleeding After Tonsillectomy in Children: A Randomized Trial

Christoph Czarnetzki; Nadia Elia; Christopher Lysakowski; Lionel Dumont; Basile Nicolas Landis; Roland Giger; Pavel Dulguerov; Jules Alexandre Desmeules; Martin R. Tramèr

CONTEXT Dexamethasone is widely used to prevent postoperative nausea and vomiting (PONV) in pediatric tonsillectomy. OBJECTIVE To assess whether dexamethasone dose-dependently reduces the risk of PONV at 24 hours after tonsillectomy. DESIGN, SETTING, AND PATIENTS Randomized placebo-controlled trial conducted among 215 children undergoing elective tonsillectomy at a major public teaching hospital in Switzerland from February 2005 to December 2007. INTERVENTIONS Children were randomly assigned to receive dexamethasone (0.05, 0.15, or 0.5 mg/kg) or placebo intravenously after induction of anesthesia. Acetaminophen-codeine and ibuprofen were given as postoperative analgesia. Follow-up continued until the 10th postoperative day. MAIN OUTCOME MEASURES The primary end point was prevention of PONV at 24 hours; secondary end points were decrease in the need for ibuprofen at 24 hours and evaluation of adverse effects. RESULTS At 24 hours, 24 of 54 participants who received placebo (44%; 95% confidence interval [CI], 31%-59%) had experienced PONV compared with 20 of 53 (38%; 95% CI, 25%-52%), 13 of 54 (24%; 95% CI, 13%-38%), and 6 of 52 (12%; 95% CI, 4%-23%) who received dexamethasone at 0.05, 0.15, and 0.5 mg/kg, respectively (P<.001 for linear trend). Children who received dexamethasone received significantly less ibuprofen. There were 26 postoperative bleeding episodes in 22 children. Two of 53 (4%; 95% CI, 0.5%-13%) children who received placebo had bleeding compared with 6 of 53 (11%; 95% CI, 4%-23%), 2 of 51 (4%; 95% CI, 0.5%-13%), and 12 of 50 (24%; 95% CI, 13%-38%) who received dexamethasone at 0.05, 0.15, and 0.5 mg/kg, respectively (P = .003). Dexamethasone, 0.5 mg/kg, was associated with the highest bleeding risk (adjusted relative risk, 6.80; 95% CI, 1.77-16.5). Eight children had to undergo emergency reoperation because of bleeding, all of whom had received dexamethasone. The trial was stopped early for safety reasons. CONCLUSION In this study of children undergoing tonsillectomy, dexamethasone decreased the risk of PONV dose dependently but was associated with an increased risk of postoperative bleeding. TRIAL REGISTRATION clinicaltrials.gov Identifier: NCT00403806.


Journal of Pediatric Surgery | 2009

Management of congenital fourth branchial arch anomalies: a review and analysis of published cases

Keyvan Nicoucar; Roland Giger; Harrison G. Pope; Thomas Jaecklin; Pavel Dulguerov

BACKGROUND/PURPOSE Congenital fourth branchial arch anomalies are uncommon entities, heretofore described only in case reports, affecting primarily children, and typically presenting as a cervical inflammatory process. The aim of the study was to collect appropriate data on the diagnosis, treatment, and outcome of this condition and to suggest guidelines for its management. METHODS We conducted a structured review of the literature for cases explicitly identified as congenital fourth branchial arch anomalies or meeting anatomical criteria for this condition. We computed descriptive statistics and performed several post hoc 2-way comparisons of subgroups of cases. RESULTS We located and critically evaluated 526 cases. Fourth arch anomalies were usually located on the left (94%) and generally presented as acute suppurative thyroiditis (45%) or recurrent neck abscess (42%). Barium swallow and direct laryngoscopy were the most useful diagnostic tools. Treatment options differed mainly in recurrence rates: incision and drainage, 89%; open neck surgery and tract excision, 15%; endoscopic cauterization of the sinus tract opening, 15%; and open neck surgery with partial thyroidectomy, 8%. Complications after surgery occurred primarily in children 8 years or younger. CONCLUSION Fourth arch anomalies are more common than once thought. Treatment of these disorders with repeated incision and drainage yields high rates of recurrence; thus, complete excision of the entire fistula tract during a quiescent period appears preferable. Combining this surgery with partial thyroidectomy may further decrease recurrence rates. Complications can likely be minimized by using antibiotic treatment of acute infections or endoscopic cauterization in children 8 years or younger, and delaying open neck surgery.


The FASEB Journal | 2002

Loss of dipeptidylpeptidase IV activity in chronic rhinosinusitis contributes to the neurogenic inflammation induced by substance P in the nasal mucosa

Eric Grouzmann; Michel Monod; Basile Nicolas Landis; Sherwin Wilk; Noureddine Brakch; Kevin Nicoucar; Roland Giger; Didier Malis; Ildiko Szalay-Quinodoz; Cláudia Cavadas; Denis R. Morel; Jean-Silvain Lacroix

In this study, we have found that dipeptidylpeptidase IV (DPPIV) plays in vivo an active role in the modulation of the inflammatory response of chronic rhinosinusitis. Human nasal mucosa expresses DPPIV‐like immunoreactivity in submucosal seromucus glands, leukocytes, and endothelial cells of blood vessels. DPPIV enzymatic activity in nasal tissue biopsies taken from patients suffering from chronic rhinosinusitis was correlated inversely with the density of inflammatory cells in the nasal mucosa, and the DPPIV activity rose when chronic rhinosinusitis was treated. By using a pig animal model, we have shown that the intranasal administration of recombinant DPPIV decreased the vasodilatation induced by exogenous substance P (SP), a proinflammatory peptide released by sensory nerves. In contrast, an inhibitor of DPPIV enhanced the vasodilatatory effect at low doses of SP. SP5–11 was 100‐ to 1000‐fold less potent than SP as a vasodilator of the nasal mucosa. The vasodilatatory effect of SP was abolished by a NK1 receptor antagonist. In conclusion, these results suggest a new pathophysiological pathway for rhinitis based on clinical observations in humans, indicating the involvement of an enzyme to modulate non‐adrenergic and non‐cholinergicnon‐cholinergic substrate that occurred during nasal dysfunctions.


Dysphagia | 2007

Anterior Cervical Osteophytes Causing Dysphagia and Dyspnea: An Uncommon Entity Revisited

Roland Giger; Pavel Dulguerov; Michael Payer

Large anterior cervical osteophytes can occur in degeneration of the cervical spine or in diffuse idiopathic skeletal hyperostosis (DISH). We present the case of an 83-year-old patient with progressive dysphagia and acute dyspnea, necessitating emergency tracheotomy. Voluminous anterior cervical osteophytes extending from C3 to C7 and narrowing the pharyngoesophageal segment by external compression and bilateral vocal fold immobility were diagnosed radiologically and by fiberoptic laryngoscopy. Surgical removal of all osteophytes led to the resolution of symptoms. Dyspnea with or without dysphagia caused by hypertrophic anterior cervical osteophytes is an uncommon entity. The exhaustive diagnostic workup proposed in the literature could be simplified by using fiberoptic laryngoscopy and dynamic videofluoroscopy. The causes, treatment, and outcome are discussed.


Otolaryngology-Head and Neck Surgery | 2010

Management of Congenital Third Branchial Arch Anomalies: A Systematic Review

Keyvan Nicoucar; Roland Giger; Thomas Jaecklin; Harrison G. Pope; Pavel Dulguerov

OBJECTIVE: To systematically review the existing literature on third branchial arch anomalies and suggest guidelines for their management. DATA SOURCES: We searched PubMed, Medline, and Embase using Scopus, and collected additional publications cited in bibliographies. We included all English-language articles and all foreign-language articles with an English abstract. REVIEW METHODS: Two investigators reviewed all cases explicitly identified as third arch anomalies or meeting anatomical criteria for third arch anomalies; they assessed presentation, diagnostic methods, intervention, and outcome. RESULTS: We found 202 cases of third arch anomalies; they presented primarily on the left side (89%), usually as neck abscess (39%) or acute suppurative thyroiditis (33%). Barium swallow, direct laryngoscopy, and magnetic resonance imaging were the most useful diagnostic tools. The recurrence rate varied among the treatment options: incision and drainage, 94 percent; endoscopic cauterization of the sinus tract opening, 18 percent; open-neck surgery and tract excision, 15 percent; and partial thyroidectomy during open-neck surgery, 14 percent. Complications after surgery appeared somewhat more frequently in children eight years of age or younger. CONCLUSION: Third arch anomalies are more common than previously reported. They appear to be best treated by complete excision of the cyst, sinus, or fistula during a quiescent period. Repeated incision and drainage yields high rates of recurrence and should be avoided. Complications might be minimized by first initiating antibiotic treatment, delaying surgical treatment until the inflammatory process is maximally resolved, and by using endoscopic cauterization.


Head and Neck-journal for The Sciences and Specialties of The Head and Neck | 2009

SALVAGE SURGERY AFTER CONCOMITANT CHEMORADIATION IN HEAD AND NECK SQUAMOUS CELL CARCINOMAS—STRATIFICATION FOR POSTSALVAGE SURVIVAL

Hiang Khoon Tan; Roland Giger; Anne Auperin; Jean Bourhis; F. Janot; Stéphane Temam

Salvage surgery after concomitant chemoradiation therapy (CCRT) for patients with head and neck squamous cell carcinomas (HNSCC) is challenging because of its associated morbidity/mortality and the poor prognoses of these patients.


Otolaryngology-Head and Neck Surgery | 2004

Chronic panrhinosinusitis without nasal polyps: long-term outcome after functional endoscopic sinus surgery

Roland Giger; Pavel Dulguerov; Didier Quinodoz; Daniel Leuba; Basile Nicolas Landis; Jean-Silvain Lacroix; Jean Paul Friedrich

OBJECTIVE: The goal of this study was to evaluate the long-term outcome after functional endoscopic sinus surgery (FESS) for chronic panrhinosinusitis without nasal polyps by using symptom scoring and an endoscopic outcome evaluation. STUDY DESIGN: Seventy-seven patients with chronic panrhinosinusitis without nasal polyps (Kennedy computed tomography (CT) scan stages I to III) were followed up for at least 3 years after FESS. Preoperative evaluation included a CT scan and an immunoallergologic evaluation. Three years after FESS, all patients were interviewed and scored endoscopically. RESULTS: Ninety-two percent of the patients showed a marked global improvement after FESS. The endoscopic control showed normal findings in 54% of all ethmoidal cavities. The postoperative endoscopic score correlated significantly with the subjective satisfaction ratings (P < 0.001). The preoperative CT staging proposed by Kennedy was predictive for necessity of revision surgery in 15% of the patients. CONCLUSIONS: Our data suggest that FESS for chronic panrhinosinusitis without nasal polyps has a good long-term outcome on subjective symptoms and endoscopic findings. SIGNIFICANCE: According to this study, subjective improvement correlates significantly with the post-operative endoscopic findings in the ethmoidal cavities of patients with chronic panrhinosinusitis without polyps at a long-term follow-up.


Otolaryngology-Head and Neck Surgery | 2005

Hemorrhage Risk After Quinsy Tonsillectomy

Roland Giger; Basile Nicolas Landis; Pavel Dulguerov

BACKGROUND: The goal of the study was to evaluate the incidence and possible predictive factors of post-tonsillectomy hemorrhage (PTH) in patients with peritonsillar abscess, treated by acute abscess tonsillectomy. METHODS: A retrospective cohort study was performed on 205 patients who underwent bilateral abscess tonsillectomy under general anesthesia. Age, sex, smoking habits, history of recurrent tonsillitis or prior peritonsillar abscess, current medical treatment, side of the peritonsillar abscess, initial treatment, surgeons experience, procedure duration, intra- and postoperative anti-inflammatory medications, and side of bleeding were analyzed. RESULTS: Bleeding occurred in 27 patients (13%). Ipsilateral hemorrhage was observed in 8 patients (4%) and contralateral hemorrhage in 19 patients (9%). The higher incidence of PTH in the side contralateral to the abscess was found to be statistically significant (P = 0.02). Male gender (P = 0.042), smoking (P = 0.009), and aspirin intake (P = 0.008) were statistically significant factors associated with an increased PTH risk. CONCLUSION: The risk of bleeding following abscess tonsillectomy seems higher than reported in elective tonsillectomy. This high incidence is mainly due to patients with prior aspirin intake or to bleeding in the side contralateral to the abscess. Postoperative bleeding could be reduced by performing a unilateral acute abscess tonsillectomy in selected patients. An algorithm is proposed for the management of peritonsillar abscess based on age, prior history of pharyngo-tonsillar infections, aspirin intake, and clinical improvement after initial drainage and antibiotherapy.


American Journal of Rhinology | 2003

Objective and subjective evaluation of endoscopic nasal surgery outcomes.

Roland Giger; Basile Nicolas Landis; Chunquan Zheng; Didier-David Malis; Alma Ricchetti; Anne-Marie Kurt; Denis R. Morel; Jean Silvain Lacroix

Background Chronic rhinosinusitis (CRS) symptoms include nasal obstruction, rhinorrhea, and facial pain associated with rhinosinusitis disability. When resistance to medical treatment is associated with endonasal anomalies, endoscopic nasal surgery (ENS) can be proposed. However, objective and subjective assessment criteria regarding the evaluation of ENS outcomes remain unclear. The aims of this study were to evaluate the correlation between the inflammation in the nasal mucosa, objective recordings of nasal airway resistance (NAR), subjective evaluation of symptom intensity, and the impact of ENS on patient-perceived rhinosinusitis disability. Methods Sixty-one consecutive patients (35 men and 26 women; mean age, 37.5 years) suffering from CRS were monitored at 4 months and 2 years after ENS. All middle turbinate mucosa were analyzed for the density of nonspecific inflammatory cells. All patients scored their own subjective rhinosinusitis symptoms and complaints of rhinosinusitis disability. An active anterior rhinomanometry was performed. Results A good correlation was observed between subjective and objective NAR (p < 0.001). We found a significant correlation between the density of inflammatory cells in the nasal mucosa, subjective nasal obstruction, and the rhinosinusitis disability score (p < 0.001). Recurrent CRS was seen only in subjects with moderate to severe inflammation of the middle turbinate mucosa sampled at the first surgical intervention. Subjective rhinosinusitis symptoms, objective NAR, and rhinosinusitis disability improved significantly after ENS. Conclusion The degree of inflammation seems to be a good prognostic indicator regarding CRS recurrence. Long-term outcome after ENS for CRS showed significant improvement in subjective rhinosinusitis-specific symptoms, objective NAR, and rhinosinusitis disability.


Laryngoscope | 2010

Taste disturbance following tonsillectomy–a prospective study†

Clemens Heiser; Basile Nicolas Landis; Roland Giger; Hélène Cao Van; Nils Guinand; Karl Hörmann; Boris A. Stuck

Persistent taste disturbance is a rare complication after tonsillectomy and mainly documented by case reports or a few retrospective and prospective trials with a limited number of patients. None could clarify frequency, time course, or prognosis of long‐lasting dysgeusia after tonsillectomy. The aim of the study was to provide a symptom‐based follow‐up after tonsillectomy to assess postoperative taste disorders.

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