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Review article: gastro-oesophageal reflux and laryngeal symptoms.

There is some evidence from clinical, experimental and multiprobe ambulatory pH studies that gastro-oesophageal reflux is more common in patients with laryngeal symptoms and could potentially play a role in the causation of these symptoms. The proportion of unselected patients with laryngeal symptoms who have gastro-oesophageal reflux as the primary aetiology may be overestimated in some series. The symptom that has been most evaluated is hoarseness, but even for this symptom the proportion of patients who have significant reflux varies widely. There is even less agreement for other symptoms, and the data on globus sensation remains confused. It is likely that these patients present to ear, nose and throat (ENT) clinics because of the relative insensitivity of the oesophageal mucosa to acid exposure. Given the lack of specificity for routine diagnostic tests for gastro-oesophageal reflux, it is necessary to perform ambulatory pH monitoring for a secure diagnosis in these patients. Treatment studies have been surprisingly few and inadequate in design. It is suspected that there is a strong placebo response for these symptoms. No clear information on efficacy can be provided until placebo-controlled randomised studies are available.

Clinical Trials as Topic↗

Systematic review of comparative efficacy and tolerability of calcipotriol in treating chronic plaque psoriasis.

OBJECTIVES: To evaluate the comparative efficacy and tolerability of topical calcipotriol in the treatment of mild to moderate chronic plaque psoriasis. DESIGN: Quantitative systematic review of randomised controlled trials. SUBJECTS: 6038 patients with plaque psoriasis reported in 37 trials. MAIN OUTCOME MEASURES: Mean difference in percentage change in scores on psoriasis area and severity index, and response rate ratios for both patients' and investigators' overall assessments of marked improvement or better. Adverse effects were estimated with the rate ratio, rate difference, and number needed to treat. RESULTS: Calcipotriol was at least as effective as potent topical corticosteroids, calcitriol, short contact dithranol, tacalcitol, coal tar, and combined coal tar 5%, allantoin 2%, and hydrocortisone 0.5%. Calcipotriol caused significantly more skin irritation than potent topical corticosteroids (number needed to treat to harm for irritation 10, 95% confidence interval 6 to 34). Calcipotriol monotherapy also caused more irritation than calcipotriol combined with a potent topical corticosteroid (6, 4 to 8). However, the number needed to treat for dithranol to produce lesional or perilesional irritation was 4 (3 to 5). On average, treating 23 patients with short contact dithranol led to one more patient dropping out of treatment owing to adverse effects than if they were treated with calcipotriol. CONCLUSIONS: Calcipotriol is an effective treatment for mild to moderate chronic plaque psoriasis, more so than calcitriol, tacalcitol, coal tar, and short contact dithranol. Only potent topical corticosteroids seem to have comparable efficacy at eight weeks. Although calcipotriol caused more skin irritation than topical corticosteroids this has to be balanced against the potential long term effects of corticosteroids. Skin irritation rarely led to withdrawal of calcipotriol treatment. Longer term comparative trials of calcipotriol versus dithranol and topical corticosteroids are needed to see whether these short term benefits are mirrored by long term outcomes such as duration of remission and improvement in quality of life.

Administration, Topical↗

Efficacy of pressure topical anaesthesia in punctal occlusion by diathermy.

AIMS: To prospectively compare the efficacy and safety of pressure topical anaesthesia in punctal occlusion by using cautery in the treatment of dry eye syndrome (DES) with that of conventional treatment by using needle injection of anaesthetic agents. METHODS: In a randomised controlled trial, 18 consecutive adult patients with DES requiring punctal occlusion were recruited over a 10 month period. Consenting patients were randomised into two groups. Group A patients received pressure topical anaesthesia in the right eye followed by injection anaesthesia in the left eye. Group B was vice versa. Punctal occlusion using cautery was performed in each eye after a specified time following the application of anaesthesia. The main outcome measures were the pain experienced during application of anaesthesia and that during punctal occlusion. RESULTS: 36 eyes of 18 patients were randomised to receive injection anaesthesia in one eye and pressure topical anaesthesia in the other. Nine patients (nine females) were in group A and nine patients (seven females, two males) in group B. The mean age of group A patients was 45.3 (SD 13.5) years, and that of group B patients was 55.6 (12.6) years. The two groups were comparable in terms of mean age (p=0.117) and mean pain score for pressure topical anaesthesia application (p=0.612), injection anaesthesia application (p=0.454), diathermy in pressure anaesthetised eyes (p=0.113), and diathermy in injection anaesthetised eyes (p=0.289). Paired t test was used to compare the mean pain score for pressure topical anaesthesia application (16.8 (24.8)) with those for injection anaesthesia application (56.7 (30.0)). 18 eyes of 18 patients were compared with the fellow eye of the same 18 patients. The mean pain score for injection anaesthesia was greater than for pressure topical anaesthesia application (p<0.0001) (statistical power=0.87). No statistically significant difference was found in the mean pain score for diathermy for eyes that received pressure topical anaesthesia (20.5 (27.5)) compared with eyes that received injection anaesthesia (23.1 (26.3)) (p=0.760) (statistical power=0.96). All 18 patients preferred pressure topical anaesthesia to injection anaesthesia. CONCLUSION: Injection anaesthesia for punctal occlusion is more painful than pressure topical anaesthesia application. However, the pain experienced during diathermy application for punctal occlusion is similar between pressure anaesthetised eyes and injection anaesthetised eyes. Pressure topical anaesthesia is a less painful (in terms of anaesthesia application) but equally effective alternative to conventional injection anaesthesia when used for punctal occlusion.

Adult↗

The role of topical corticosteroids in bullous pemphigoid in the elderly.

Bullous pemphigoid (BP) is the most common autoimmune blistering skin disease. Until recently the condition was treated with oral corticosteroids. However, high-dose corticosteroids are poorly tolerated in the elderly and their use has probably contributed to the high mortality rates observed in several cohorts. Accordingly, considerable effort has been directed at identifying corticosteroid-sparing agents, such as immunosuppressant drugs, plasma exchange techniques, intravenous immunoglobulins and tetracycline, that can be used in this clinical setting. Many of these options have appeared to be useful in open series, but they have been found to be ineffective or only marginally effective when tested in randomised, controlled trials. An important breakthrough occurred with the demonstration in a large, randomised trial that a 'super-potent' topical corticosteroid (clobetasol propionate) was not only associated with a significant decrease in severe complications and mortality of BP patients, but was also more effective than oral prednisone. New strategies for BP should include topical clobetasol propionate as first-line therapy in the elderly and consider adjuvant therapy only in the very rare cases that are either resistant or intolerant to this treatment.

Administration, Topical↗

Oral tetracycline in the treatment of recurrent corneal erosions.

We report the results of a prospective, randomised controlled, 24 week trial to assess the efficacy of oral tetracycline and oral tetracycline with topical prednisolone in the treatment of recalcitrant recurrent corneal erosions, i.e. those which fail to respond to standard therapy. A total of 30 patients were randomly allocated to either standard treatment (group A), standard treatment and oral tetracycline (group B) or standard treatment, oral tetracycline and topical prednisolone (group C). Treatment groups B and C were instructed to perform daily lid hygiene. There was a significant reduction in the number of recurrent corneal erosions during the 24 week study period in group B (p = 0.04) and in group C (p = 0.0003) but not in group A (p = 0.66). There was a significant difference in the accelerated healing time of recurrent corneal microerosions between groups A and B (p = 0.001) and between groups A and C (p = 0.001). There was a significant improvement in the symptom scores during the study in treatment groups B and C (p = 0.005) but not in group A (p = 0.15). We conclude that lid hygiene and oral oxytetracycline 250 mg twice daily for 12 weeks with or without topical prednisolone for the first 7 days is beneficial in the management of recalcitrant recurrent corneal erosions.

Administration, Oral↗