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2.
J Laryngol Otol ; 136(12): 1333-1335, 2022 Dec.
Article in English | MEDLINE | ID: mdl-35193715

ABSTRACT

BACKGROUND: This paper reports a case of chondrosarcoma deriving from the left arytenoid cartilage that was resected via an anterior laryngofissure using the Tritube in situ, thus eliminating the need for a (temporary) tracheostomy. CASE REPORT: A 49-year-old male with a chondrosarcoma deriving from the left arytenoid was treated with local resection of the tumour through an anterior laryngofissure. The intralaryngeal lumen was too small for a normal endotracheal tube. Using the Tritube (outer diameter, 4.4 mm), the patient could be intubated and ventilated adequately during the procedure. The Tritube did not obstruct the surgical view during the procedure. CONCLUSION: The Tritube can be used for intubation and ventilation even in patients with a very narrow airway lumen, and does not obstruct the field of view during open laryngeal surgery, thereby avoiding the need for peri-operative tracheostomy.


Subject(s)
Chondrosarcoma , Laryngeal Diseases , Larynx , Humans , Male , Middle Aged , Tracheostomy/methods , Intubation, Intratracheal/methods
3.
Int J Oral Maxillofac Surg ; 51(6): 762-767, 2022 Jun.
Article in English | MEDLINE | ID: mdl-34782202

ABSTRACT

The diagnosis and treatment of deep lobe parotid tumours is challenging because of the complex surgical accessibility. There is a lack of studies describing the differences between deep lobe tumours that do and do not occupy the parapharyngeal space (PPS). Patients treated for deep lobe tumours occupying the PPS (PPS group) and not occupying the PPS (non-PPS group) were analysed retrospectively. A total of 227 patients were treated surgically for deep lobe parotid tumours between 1990 and 2019. Sixty patients (26.4%) presented with tumours that involved the PPS (PPS group), while 167 (73.6%) presented with tumours that did not occupy the PPS (non-PPS group). The majority of the PPS group tumours were removed using a transcervical or transcervical-transparotid approach. PPS group tumours were larger (P < 0.001), and tumour spill occurred more frequently in this group (benign tumours: P = 0.002; malignant tumours: P = 0.033). Complication rates did not differ between the PPS and non-PPS groups. A transcervical or transcervical-transparotid approach is the preferred method for the management of deep lobe parotid tumours that occupy the PPS in our practice. Tumour spill occurred more frequently in the PPS group, which is most probably due to the larger tumour size and more complex accessibility.


Subject(s)
Parotid Neoplasms , Humans , Parapharyngeal Space , Parotid Neoplasms/diagnostic imaging , Parotid Neoplasms/pathology , Parotid Neoplasms/surgery , Research Design , Retrospective Studies
4.
Clin Otolaryngol ; 43(4): 1104-1116, 2018 Aug.
Article in English | MEDLINE | ID: mdl-29656606

ABSTRACT

OBJECTIVE: The aim of this study was to evaluate the risk associated with different types of surgery for carotid body paraganglioma of different Shamblin class. A meta-analysis was conducted to evaluate per tumour class, the local control, cranial nerve damage and complication rates of different techniques using internal carotid artery (ICA) and external carotid artery (ECA) ligation, clamping or bypassing, as well as the craniocaudal vs caudocranial techniques. DESIGN: A meta-analysis is conducted after a systematic search in PubMed and the Cochrane library, in accordance with the PRISMA guidelines. MAIN OUTCOME MEASURES: Local control, cranial nerve damage, complications, function recovery. RESULTS: Out of 3565 articles, 27 were selected. The overall quality of evidence of studies was low. Cranial nerve damage (3%, 17% and 39%) and complication rates (0%, 1% and 10%) were significantly related to Shamblin class (class 1, 2 and 3, respectively, P < .01). For class 3 tumours, an increased risk of complications was found associated with routine ICA manipulation/reconstruction (RR 3.12 with a 95% CI of 1.29-7.59), as well as a trend towards enhanced risk of routine ECA ligation (RR 3.48 with a 95% CI of 0.88-13.81). CONCLUSIONS: For class 1 and 2 tumours, surgery seems a viable treatment option. For class 3 tumours, morbidity in terms of cranial nerve deficit and complications is considerable; particularly, the use of ICA manipulation/reconstruction and potentially ECA ligation seem to be accompanied by high stroke incidence.

5.
Clin Otolaryngol ; 43(2): 652-661, 2018 04.
Article in English | MEDLINE | ID: mdl-29222838

ABSTRACT

OBJECTIVE: Key for successful jugulotympanic paraganglioma management is a personalised approach aiming for the best practice for each individual patient. To this end, a systematic review is performed, evaluating the local control and complication rates for the different treatment modalities stratified by the broadly accepted Fisch classification. DESIGN: A systematic literature review according to the PRISMA statement was performed. A detailed overview of individual treatment outcomes per Fisch class is provided. MAIN OUTCOME MEASURES: Local control, cranial nerve damage, complications, function recovery. RESULTS: Eighteen studies were selected, resembling 83 patients treated with radiotherapy and 299 with surgery. Excellent local control was found post-surgery for class A and B tumours, and risk of cranial nerve damage was <1%. For class C1-4 tumours, local control was 80%-95% post-surgery (84% post-radiotherapy), and cranial nerve damage was found in 71%-76% (none post-radiotherapy; P < .05). There was no difference in treatment outcomes between tumours of different C class. For class C1-4De/Di tumours, local control was 38%-86% (98% post-radiotherapy; P < .05) and cranial nerve damage/complication rates were 67%-100% (3% post-radiotherapy; P < .05). C1-4DeDi tumours showed lesser local control and cranial nerve damage rates when compared to C1-4De tumours. CONCLUSIONS: An individual risk is constituted for surgery and radiotherapy, stratified per Fisch class. For class A and B tumours, surgery is a suitable treatment option. For class C and D tumours, radiotherapy results in lower complication rates and similar or better local control rates when compared to the surgical group.


Subject(s)
Ear Neoplasms/therapy , Glomus Jugulare Tumor/therapy , Glomus Tympanicum Tumor/therapy , Combined Modality Therapy , Ear Neoplasms/pathology , Glomus Jugulare Tumor/pathology , Glomus Tympanicum Tumor/pathology , Humans
6.
Clin Otolaryngol ; 40(6): 651-6, 2015 Dec.
Article in English | MEDLINE | ID: mdl-25858429

ABSTRACT

OBJECTIVES: To describe the health-related quality of life of patients visiting a tertiary referral centre for facial palsy, and to analyse factors associated with health-related quality of life, using the FaCE Scale instrument. DESIGN: Retrospective cohort study. SETTING: The Facial Nerve Center at the Massachusetts Eye and Ear Infirmary, a tertiary referral centre. PARTICIPANTS: Patients with a peripheral facial palsy visiting the centre for an initial consultation between August 2007 and June 2012. MAIN OUTCOME MEASURES: The total FaCE score and the FaCE social function subdomain. Multiple regression models were developed to identify factors associated with the total FaCE score and FaCE social function score. RESULTS: A total of 794 patients with a mean age of 47.0 ± 16.0 years were analysed in this study, of which 59.9% were female. The mean House-Brackmann, Sunnybrook, total FaCE and FaCE social function scores were 3.6 ± 1.5, 48.2 ± 21.2, 47.3 ± 19.3 and 55.5 ± 19.2, respectively. Increasing age (r = -0.229, P < 0.001) was associated with a lower total FaCE score. Female gender (r = -4.422, P = 0.033) and increased duration of palsy (r = -0.018, P = 0.041) were associated with lower FaCE social function scores. CONCLUSIONS: While counselling patients on what to expect during the recovery process after facial paralysis is an important part of any clinical visit, FaCE score correlations suggest that female patients with chronic facial palsy and increased age constitute a patient category that may require additional time and attention to prevent or mitigate psychosocial dysfunction.


Subject(s)
Facial Expression , Facial Muscles/physiopathology , Facial Paralysis/psychology , Health Status , Quality of Life , Adolescent , Adult , Aged , Aged, 80 and over , Facial Paralysis/physiopathology , Female , Follow-Up Studies , Humans , Male , Middle Aged , Retrospective Studies , Severity of Illness Index , Young Adult
8.
Clin Otolaryngol ; 37(2): 124-9, 2012 Apr.
Article in English | MEDLINE | ID: mdl-22372732

ABSTRACT

OBJECTIVES: This study evaluates the relation between stoma volumes by means of objective three-dimensional measurements of laryngectomised individuals and peristomal fixation of adhesive baseplates during hands-free speech. DESIGN: A three-dimensional stereophotogrammetrical image was captured of the tracheostoma and its surrounding tissue for each participant. The placement of a baseplate adhesive was virtually simulated. Individual stoma volumes were calculated and related to the duration of lifetime of adhesive baseplates. SETTING: Prospective trial in a university hospital setting. PARTICIPANTS: Twenty-four laryngectomised patients. MAIN OUTCOME MEASURES: Stoma volume in cm(3) and adhesive baseplate adherence in minutes. RESULTS: For the 24 three-dimensional images captured, the mean volume of the area under the adhesive (stoma volume) was 9.5 cm(3) (range 3.5-22.5). After relating the different volumes of all patients to their individual fixation score, a significant decrease in duration of adhesive lifetime was found with increasing volumes of the stoma (P = 0.001). An increase of 1 cm(3) in tracheostoma volume resulted in a decrease of 21% in median adhesive lifetime (95% confidence interval 10-31%). CONCLUSIONS: Longer lifetime of the adhesive baseplate in patients with smaller volume outcomes suggests that a more accurate fit between baseplate and stoma leads to better fixation. This should be taken into account when shaping a stoma during laryngectomy. On the other hand, a more custom-made patch that has a more accurate fit could increase the lifetime of fixation. We believe that our three-dimensional volumetric data can contribute to the development of such an adhesive.


Subject(s)
Adhesives , Imaging, Three-Dimensional , Laryngectomy/rehabilitation , Larynx, Artificial , Photogrammetry/methods , Speech, Alaryngeal/instrumentation , Tracheostomy , Braces , Follow-Up Studies , Humans , Postoperative Care/methods , Prospective Studies , Prosthesis Design , Speech Production Measurement/methods , Treatment Outcome
9.
J Psychosom Res ; 72(3): 230-5, 2012 Mar.
Article in English | MEDLINE | ID: mdl-22325704

ABSTRACT

OBJECTIVE: Voice handicap in relation to psychosomatic well-being after education in female student teachers. METHODS: A longitudinal survey among 90 female students using Voice Handicap Index and Symptom Check List-90 at the start and end of education. RESULTS: Student teachers in fourth grade showed lower VHI Total and lower SCL-90 Total scores compared to first grade. Students with higher VHI scores in fourth grade had higher risk on "Anxiety" (OR=1.8 to 4.8), "Agoraphobia" (OR=1.9 to 3.9) and "Insufficiency in thinking and acting" (OR=1.6 to 3.2). Students with respectively higher VHI-Total and VHI-Emotional subscale scores had higher risk on "Depression" (OR=1.7, resp. 3.9), "Interpersonal sensitivity and mistrust" (OR=1.6, resp. 3.2), "Hostility" (OR=1.7, resp. 2.1) and SCL-Total (OR=3.1 resp. 4.0). CONCLUSIONS: Student teachers at the end of education showed more well-being and were less vocally handicapped. A tendency for a positive relation between higher emotional voice handicap and more psychosomatic complaints was found. SUGGESTIONS: The VHI has proven to be useful and special attention to VHI Emotional scale is advised in screening. This study might have implications for the preventive care and a multi-dimensional approach with attention to physical, mental and social voice care in future teachers is suggested. In contrast to the group score comparisons a closer look at individual reports on specific VHI items in relation to SCL-90 may be fruitful to detect tendencies. Student teachers can benefit from interdisciplinary collaboration between a psychologist and voice therapist in reducing psychosocial risk factors.


Subject(s)
Behavioral Symptoms , Disabled Persons/psychology , Faculty , Students/psychology , Voice Disorders , Behavioral Symptoms/etiology , Behavioral Symptoms/physiopathology , Disabled Persons/education , Female , Humans , Interpersonal Relations , Longitudinal Studies , Patient Care Team , Preventive Health Services/methods , Psychological Tests , Psychology , Psychophysiology , Risk Factors , Severity of Illness Index , Stress, Psychological/etiology , Stress, Psychological/physiopathology , Voice Disorders/complications , Voice Disorders/psychology , Voice Disorders/therapy , Voice Training , Young Adult
10.
J Voice ; 26(4): 466-70, 2012 Jul.
Article in English | MEDLINE | ID: mdl-21839612

ABSTRACT

BACKGROUND: Voice disorders have a multifactorial genesis and may be present in various ways. They can cause a significant communication handicap and impaired quality of life. OBJECTIVE: To assess the effect of vocal fold lesions and voice quality on voice handicap and psychosomatic well-being. METHODS: Female patients, aged 18-65 years, who were referred to the outpatient clinic with voice problems were subsequently assessed. Laryngostroboscopic examination and acoustic voice analysis were carried out, and the patients were asked to fill in the Voice Handicap Index (VHI) and Symptom Check List-90 questionnaires. RESULTS: Eighty-two patients were included. In 43 patients (52.4%), a vocal fold lesion was observed. The VHI and psychosomatic well-being did not differ significantly between patients with and without a vocal fold lesion. The patients with a vocal fold lesion showed lower scores on the Dysphonia Severity Index (DSI) compared with those without a vocal fold lesion. However, the DSI was not correlated with voice handicap and psychosomatic well-being, except for the VHI physical subscale. CONCLUSION: Objective measurement does not necessarily correlate with the subjective appraisal of the patient's voice handicap and psychosomatic well-being. Furthermore, the criterion of the presence of a vocal fold lesion as the base of indemnity that is applied by health insurance institutions should be questioned.


Subject(s)
Vocal Cords/pathology , Voice Disorders/pathology , Voice Disorders/psychology , Voice Quality , Adolescent , Adult , Aged , Female , Humans , Middle Aged , Prospective Studies , Psychophysiologic Disorders/pathology , Young Adult
12.
Oral Oncol ; 47(11): 1079-84, 2011 Nov.
Article in English | MEDLINE | ID: mdl-21856211

ABSTRACT

Pilot study evaluating the diagnostic value of magnetic resonance lymphography (MRL) compared with conventional imaging techniques in the preoperative staging of the clinically (palpable) negative neck (cN0) in squamous cell carcinoma of the oral cavity (SCCOC). Patients with SCCOC without clinical evidence of lymph node metastasis and scheduled for surgery underwent MRL in combination with ultrasound with or without fine needle aspiration cytology and multi-detector computer tomography. MRL images were interpreted by 2 independent radiologists. All patients were planned for resection of the primary tumor and a selective neck dissection of levels I-III. Histopathologic results were evaluated as the gold standard and compared with preoperative findings. One of nine evaluated patients had a metastatic node on histopathologic analysis. In all but 1 patient, MRL showed possible metastatic spread in at least 1 node. On a node-to-node basis, negative predictive value (NPV) and sensitivity reached 100% for 1.5- en 3Tesla (T) MRL, specificity reached 92% at 1.5T and 93% at 3T MRL, and positive predictive value (PPV) was 8% at 1.5T MRL, for both radiologists. PPV at 3T MRL was 10% and 9%, for radiologists I and II, respectively. This pilot study shows that MRL has a high NPV based on a node-to-node analysis. However, its PPV was only 10%, and therefore its use as a single imaging technique in the preoperative staging of the cN0 neck in SCCOC seems to be limited. Further studies are needed to confirm these data.


Subject(s)
Carcinoma, Squamous Cell/diagnosis , Mouth Neoplasms/diagnosis , Female , Humans , Lymph Node Excision , Lymphatic Metastasis/diagnosis , Lymphography/methods , Magnetic Resonance Spectroscopy/methods , Male , Neck/surgery , Pilot Projects , Prospective Studies , Sensitivity and Specificity
13.
Oral Oncol ; 46(2): 87-91, 2010 Feb.
Article in English | MEDLINE | ID: mdl-20060774

ABSTRACT

Estimating the value of our preoperative workup in the treatment of patients with clinically N0 (cN0) squamous cell carcinoma of the oral cavity. Retrospective analysis. Results of preoperative palpation, ultrasound (US) and ultrasound-guided fine needle aspiration cytology (FNAC) were compared to the histological findings after unilateral or bilateral elective selective neck dissection of level I-III (SND I-III) in patients with cN0 squamous cell carcinoma of the oral cavity. Occult metastases were detected by in 50 (22%) out of the 224 cN0 patients. No metastases were found beyond level III in extended neck dissections. T1N0M0 tumors and T2N0M0 tumors metastasized in 8 out of 77 cases (10%) and 32 out of 112 (29%) cases, respectively. Staging of the cN0 neck by palpation and US (+/-ultrasound-guided FNAC) missed occult lymph node metastases in 22% of the patients with oral cavity squamous cell carcinoma. The use of SND I-III therefore still is warranted. Frozen section sampling seemed to be redundant in this selected group of patients, because no additional metastases were found in extended neck dissection specimens. It might not be necessary to perform elective neck dissection in patients with T1 tumors.


Subject(s)
Carcinoma, Squamous Cell/diagnostic imaging , Head and Neck Neoplasms/diagnostic imaging , Lymph Nodes/diagnostic imaging , Neck Dissection , Preoperative Care/standards , Adult , Aged , Aged, 80 and over , Carcinoma, Squamous Cell/secondary , Carcinoma, Squamous Cell/surgery , Elective Surgical Procedures/methods , Female , Head and Neck Neoplasms/pathology , Head and Neck Neoplasms/surgery , Humans , Lymph Nodes/pathology , Lymph Nodes/surgery , Lymphatic Metastasis , Male , Middle Aged , Neoplasm Staging , Palpation , Retrospective Studies , Ultrasonography
14.
Acta Paediatr ; 98(11): 1852-4, 2009 Nov.
Article in English | MEDLINE | ID: mdl-19659708

ABSTRACT

UNLABELLED: A case report is presented of a rapidly growing congenital nasopharyngeal teratoma (epignathus) in a preterm infant, leading to severe upper airway obstruction. Prenatal diagnosis by ultrasonography did not reveal the condition because the tumour masses were initially small and there was no polyhydramnios. Epignathus is a rare cause of upper airway obstruction of the newborn that can grow rapidly in the neonatal period and should be treated surgically. CONCLUSION: Epignathus is a rare cause of upper airway obstruction of the newborn that can grow rapidly in the neonatal period.


Subject(s)
Airway Obstruction/etiology , Infant, Premature, Diseases/diagnosis , Nasopharyngeal Neoplasms/congenital , Nasopharynx/pathology , Teratoma/congenital , Diagnosis, Differential , Female , Humans , Infant, Newborn , Infant, Premature , Magnetic Resonance Imaging , Nasopharyngeal Neoplasms/complications , Nasopharyngeal Neoplasms/diagnosis , Nasopharynx/diagnostic imaging , Teratoma/complications , Teratoma/diagnosis , Ultrasonography
15.
J Dent Res ; 87(8): 788-92, 2008 Aug.
Article in English | MEDLINE | ID: mdl-18650554

ABSTRACT

Cleft palate repair leaves full-thickness mucosal defects on the palate. Healing might be improved by implantation of a mucosal substitute. However, the genetic and phenotypic deviations of cleft palate cells may hamper tissue engineering. The aim of this study was to construct mucosal substitutes from cleft palate cells, and to compare these with substitutes from normal palatal cells, and with native palatal mucosa. Biopsies from the palatal mucosa of eight children with cleft palate and eight age-matched control individuals were taken. Three biopsies of both groups were processed for (immuno)histochemistry; 5 were used to culture mucosal substitutes. Histology showed that the substitutes from cleft-palate and non-cleft-palate cells were comparable, but the number of cell layers was less than in native palatal mucosa. All epithelial layers in native palatal mucosa and mucosal substitutes expressed the cytokeratins 5, 10, and 16, and the proliferation marker Ki67. Heparan sulphate and decorin were present in the basal membrane and the underlying connective tissue, respectively. We conclude that mucosal cells from children with cleft palate can regenerate an oral mucosa in vitro.


Subject(s)
Cell Differentiation/physiology , Cleft Palate/pathology , Keratinocytes/transplantation , Mouth Mucosa/cytology , Palate, Hard/cytology , Case-Control Studies , Cells, Cultured , Child, Preschool , Cleft Palate/metabolism , Cleft Palate/surgery , Humans , Infant , Mouth Mucosa/metabolism , Mouth Mucosa/pathology , Mouth Mucosa/surgery , Palate, Hard/metabolism , Palate, Hard/pathology , Palate, Hard/surgery , Reference Values , Stem Cell Transplantation , Stem Cells/cytology , Tissue Engineering/methods
16.
Ned Tijdschr Geneeskd ; 152(8): 421-2, 2008 Feb 23.
Article in Dutch | MEDLINE | ID: mdl-18361188

ABSTRACT

In this comment, the practice guideline 'Sore throat' (second revision) is discussed. This guideline, composed by the Dutch College of General Practitioners, offers general practitioners a well-appreciated overview of the common practices regarding diagnostic tests and treatment of pharyngitis and tonsillitis.


Subject(s)
Anti-Bacterial Agents/therapeutic use , Family Practice/standards , Pharyngitis/drug therapy , Practice Guidelines as Topic , Practice Patterns, Physicians'/standards , Diagnosis, Differential , Humans , Netherlands , Pharyngitis/diagnosis , Pharyngitis/microbiology , Societies, Medical
17.
Ned Tijdschr Geneeskd ; 151(19): 1087-90, 2007 May 12.
Article in Dutch | MEDLINE | ID: mdl-17552419

ABSTRACT

A 51-year-old woman presented with a sore throat, hoarseness and difficulty in swallowing. On physical examination she was found to have stridor. Laryngoscopy revealed a subglottal stenosis. Infection was thought to be the cause but this was not confirmed by sputum or laryngeal cultures. Because of the clinical course and the presence of antineutrophil cytoplasmic proteinase-3 antibodies, Wegener's granulomatosis was diagnosed. Immunosuppressive therapy led to improvement. At 4-year follow-up the patient had scleritis but no ENT problems. Wegener's granulomatosis should always be considered in a patient with a subglottal stenosis; it can be the first symptom of this disease.


Subject(s)
Antibodies, Antineutrophil Cytoplasmic/blood , Granulomatosis with Polyangiitis/complications , Granulomatosis with Polyangiitis/diagnosis , Laryngostenosis/etiology , Diagnosis, Differential , Female , Granulomatosis with Polyangiitis/pathology , Humans , Laryngoscopy , Laryngostenosis/diagnosis , Middle Aged , Myeloblastin/immunology , Scleritis/diagnosis , Scleritis/pathology
18.
Clin Oncol (R Coll Radiol) ; 19(6): 385-96, 2007 Aug.
Article in English | MEDLINE | ID: mdl-17433637

ABSTRACT

Tumour hypoxia has been found to be a characteristic feature in many solid tumours. It has been shown to decrease the therapeutic efficacy of radiation treatment, surgery and some forms of chemotherapy. Successful approaches have been developed to counteract this resistance mechanism, although usually at the cost of increased short- and long-term side-effects. New methods for qualitative and quantitative assessment of tumour oxygenation have made it possible to establish the prognostic significance of tumour hypoxia. The ability to determine the degree and extent of hypoxia in solid tumours is not only important prognostically, but also in the selection of patients for hypoxia-modifying treatments. To provide the best attainable quality of life for individual patients it is of increasing importance that tools be developed that allow a better selection of patients for these intensified treatment strategies. Several genes and proteins involved in the response to hypoxia have been identified as potential candidates for future use in predictive assays. Although some markers and combinations have shown potential benefit and are associated with treatment outcome, their clinical usefulness needs to be validated in prospective trials. A review of published studies was carried out, focusing on the assessment of tumour hypoxia, patient selection and the possibilities to overcome hypoxia during treatment.


Subject(s)
Cell Hypoxia/radiation effects , Neoplasms/physiopathology , Neoplasms/therapy , Patient Selection , Anemia/physiopathology , Anemia/therapy , Biomarkers, Tumor/analysis , Carbon Dioxide/therapeutic use , Humans , Hyperbaric Oxygenation , Neoplasms/radiotherapy , Niacinamide/therapeutic use , Nuclear Medicine/methods , Oxygen/therapeutic use , Radiation Tolerance/radiation effects , Radiation-Sensitizing Agents , Vitamin B Complex/therapeutic use
19.
Neth J Med ; 65(1): 15-22, 2007 Jan.
Article in English | MEDLINE | ID: mdl-17293635

ABSTRACT

Clinical indicators give an indication of the quality of the patient care delivered. They must comply with highquality standards and should be constructed in a careful and transparent manner. Indicators must be relevant to the important aspects of quality of care. There should be adequate research evidence that the recommendations from which they are derived are related to clinical effectiveness, safety and efficiency. They should measure the quality in a valid and reliable manner with little inter- and intra-observer variability so that they are suitable for comparisons between professionals, practices, and institutions. Indicators are selected from research data with consideration for optimal patient care (preferably an evidence-based guideline), supplemented by expert opinion. In the selection procedure, the feasibility, such as their measurability and improvability, is important beside validity and reliability. A clinical indicator should be defined exactly and expressed as a quotient. After a try-out, the measurements and reporting should follow. The report contains an in-depth analysis of causal and contributing factors associated with the measured results. A description of the clinical circumstances and a correction for case mix should be included to allow for a justified interpretation. The indicators must be part of an improvement strategy, for which comparison feedback is often used. We give examples of indicator development and applications in oncology, diabetes care, and the use of antibiotics for treating pneumonia. We explain how comparison with reference data can be used to construct improvement programmes.


Subject(s)
Quality Indicators, Health Care/standards , Evidence-Based Medicine , Humans , Quality Assurance, Health Care/standards
20.
Acta Otolaryngol ; 125(8): 804-13, 2005 Aug.
Article in English | MEDLINE | ID: mdl-16158525

ABSTRACT

In most patients with advanced or recurrent laryngeal or hypopharyngeal cancer, total laryngectomy is indicated. This means the loss of three main functions: phonation; respiration; and the prevention of aspiration during deglutition. Laryngectomy patients have various options to restore phonation: an oesophageal voice; an electrolaryngeal voice; or a tracheo-oesophageal voice. In the last case a silicone rubber shunt valve is placed in the tracheo-oesophageal wall and phonation is generated when exhaled air is forced through the oesophagus and neopharynx. This method is widely applied in Western Europe. In this paper we review the literature on fixation problems with shunt valves, tracheostoma valves and heat and moisture exchange (HME) filters. Tracheo-oesophageal speech without a valve is not considered. Despite 22 years of experience with the implantation of tracheo-esophageal shunt valves and many improvements in the design, problems still remain, such as biofilm formation with subsequent leakage through the valve, the need for frequent and inconvenient replacements, fistula enlargement leading to leakage around the device and reduced fixation, and infections. The high cost of shunt valves is a drawback to their use worldwide. To enable hands-free speech, different types of tracheostoma valve have been developed. These valves are fixed to the skin or to the tracheostoma by means of an intra-tracheal device. An HME filter is used to protect the airway and maintain physiological balance. Such devices are only suitable for a selected group of patients as fixation to the skin or trachea can be a major problem. Speaking and coughing cause pressure increases, which often result in mucous leakage and disconnection of the valve and/or HME filter. Recommendations are made for future improvements in fixation techniques.


Subject(s)
Laryngectomy/rehabilitation , Larynx, Artificial/adverse effects , Speech, Alaryngeal/instrumentation , Humans , Postoperative Complications/rehabilitation , Pressure , Prosthesis Design , Prosthesis Fitting/adverse effects , Voice
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