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Biomedical subjects

D J Tazelaar

Publications and source records attributed to D J Tazelaar.

14 recordsLinked to original sources
PubMed2003

[Treatment of venous leg ulcers].

A venous leg ulcer is a sign of severe chronic venous insufficiency (CVI). Treatment is focused on the cause of CVI and on wound management. The basis of the treatment consists of compression therapy and sufficient exercise (walking). With this, 70% of the ulcers are healed after three months. Surgery is indicated when the venous insufficiency is the result of reflux in the superficial veins. Subfascial endoscopic perforator surgery can be considered in case of insufficient perforator veins but the long-term efficacy has not yet been established. Modern wound management with hydrocolloids, foams or alginates is satisfactory and well tolerated. When the ulcer has healed but the cause of the venous insufficiency cannot be corrected, life-long compression therapy with a flat-knitted therapeutic elastic stocking is necessary to prevent recurrences.

Bandages↗
PubMed2001

Multicentre, randomised controlled trial of four-layer bandaging versus short-stretch bandaging in the treatment of venous leg ulcers.

BACKGROUND: Aim of the study was to compare the healing rates of venous ulcers obtained with four-layer bandages (4LB) versus short stretch bandages (SSB). DESIGN: Multicentre, randomised controlled trial performed in 5 centres of the Netherlands and in 2 centres in Austria ("PADS-study" = Profore Austrian Dutch Study). PATIENTS AND METHODS: 112 patients (53 treated with 4LB and 59 treated with SSB) completed at least one post-treatment follow-up, 90 completed the study. Bandaging and ulcer assessment was performed at weekly intervals. Randomisation was carried out for each centre and was stratified according to the size (more or less than 10 cm2) of the ulcerated area. Local therapy consisted of plain absorbing, non-adherent dressings. Time to complete healing was recorded up to a maximum of 16 weeks. The two treatment-groups were comparable regarding their baseline-characteristics. RESULTS: In total 33/53 (62%) of ulcer-patients were healed in the 4LB group, compared with 43/59 (73%) in the SSB group (difference 11%, 95% CI -28% to 7%). 77% of the ulcers with an initial area less than 5 cm2 healed as compared with 33% of the larger ulcers. The different healing rates in the centres could be explained by the different sizes of the treated ulcers. Based on Kaplan-Meier estimates the median healing time was 57 days for the 4LB (95% CI 47-85 days) and 63 days for the SSB (95% CI 43-70 days). CONCLUSION: The ulcer healing rate and the median healing time did not differ among the two types of bandages. The main discriminant criterion for healing was the initial ulcer size. In centres who are experienced users of short-stretch bandages, no statistically significant different healing rates of venous ulcers could be found after 4LB or SSB.

Adult↗
PubMed1999

The prevalence of factor V Leiden mutation in patients with leg ulcers and venous insufficiency.

OBJECTIVES: To study the prevalence of factor V Leiden mutation in patients with chronic venous insufficiency and venous leg ulcers, compared with a control group, and to find out whether factor V Leiden mutation is more frequent in patients with chronic venous insufficiency and a history of deep venous thrombosis. DESIGN: A case control study. SETTING: Three outpatient dermatological clinics. PATIENTS: Ninety-two patients (37 men, 55 women) with venous leg ulcers and 53 control patients (23 men, 30 women). MAIN OUTCOME MEASURE: Factor V Leiden mutation. RESULTS: Factor V Leiden mutation was significantly more frequent in patients with chronic venous insufficiency and venous leg ulcers than in the control group (23% vs 7.5%; P=.03), and the patients with factor V Leiden mutation were more likely to have a history of venous thromboembolism (91% vs 48%, P=.002). Also, recurrent deep venous thrombosis (38% vs 14%) and recurrent leg ulcerations (9 episodes or more) occurred more frequently in the patients with factor V Leiden mutation (43% vs 19%, P=.01). No difference was observed in venous refill time or in the presence of dermatoliposclerosis and atrophie blanche. CONCLUSIONS: Factor V Leiden mutation is more frequent in patients with venous leg ulceration than in the control group and the general population. Patients with factor V Leiden mutation have an increased risk of developing deep venous thrombosis and recurrent leg ulceration.

Adult↗
PubMed1999

Joint and bone involvement in Dutch patients with Lyme borreliosis presenting with acrodermatitis chronica atrophicans.

We report on the radiological abnormalities of bones and joints in Dutch patients suffering from Lyme borreliosis presenting with acrodermatitis chronica atrophicans (A.C.A.). In a highly endemic area of the Netherlands rheumatic complaints were mentioned by 26 out of 60 patients suffering from a late stage of Lyme disease. Radiological findings in our group of patients were subluxation of the toe joint and periostitis of the bones of the lower limb.

Acrodermatitis↗
PubMed1999

Long cotton wool rolls as compression enhancers in macrosclerotherapy for varicose veins.

BACKGROUND: Macrosclerotherapy in combination with compression has proven to be safe and effective in the treatment of varicose veins. Local compression is increased by pads, according to Laplace law. Firm rolls of cotton wool are fixed over the course of the entire vein to increase local compression and to reduce complications. Additional compression is given by a combination of a class I (daytime and nighttime) and class II (daytime only) medical compression hosiery. PURPOSE: To evaluate the effectiveness and side effects of sclerocompression therapy with cotton wool rolls in combination with medical compression hosiery. METHOD: Prospective study with 100 patients (120 legs) with primary varicose veins, which are treated with polidocanol as sclerosant with the empty vein technique. Immediately after the injection, a long cotton wool roll is placed over the entire vein and fixed. Additional compression is obtained with class I and class II medical compression hosiery. The interface pressure on the skin, just under the cotton wool roll, is measured on 12 legs with the aid of an interface pressure measuring instrument (Oxford Pressure Monitor). RESULTS: Good sclerosing results are obtained in all patients. Side effects are classified as early and late. In 16 patients, minor side effects which needed no treatment are observed. In only 3 cases (2.5%), intravascular blood clots (2) and phlebitis (1) needed incision and expression. The mean interface pressure of all measuring sensors under the cotton wool roll is 84 mm/Hg (68 to 122 mm/Hg). CONCLUSION: This study proves the high effectiveness of a cotton wool roll compression right at the place of treatment. By using these long cotton wool compression rolls, the compression part of sclerocompression therapy becomes more effective and much easier to perform.

Animals↗
PubMed1995

Acrodermatitis chronica atrophicans: a light and electron microscopic study.

Degeneration of the elastica and collagen fibres in skin biopsies from patients with acrodermatitis chronica atrophicans was studied with light and electron microscopy. Elastic fibres were involved in the infiltrative stage while the elastin plexus was still present. In the atrophic phase, only fragments of elastic and oxytalan fibres were seen and the elaunin plexus was absent. Some collagen fibres were surrounded by osmiophilic material. In all biopsies, myelin sheaths were collapsed without axon structures. Spirochetes could be demonstrated in 69% of the biopsies and were most numerous in infiltrative and nodular lesions. The loss of elasticity of the skin in the atrophic phase may be caused by the destruction of both elastic and elastin fibres.

Acrodermatitis↗
PubMed1992

A randomized treatment duration-finding study of terbinafine in onychomycosis.

Terbinafine is an allylamine antifungal compound shown to be effective in the oral treatment of onychomycosis. Because of the fungicidal activity of the drug, a shorter duration of treatment, compared with the currently used oral treatment modalities, can be expected in onychomycosis of the toenail. In the present randomized study, the efficacy of oral terbinafine treatment (250 mg/day) was assessed for periods of 6, 12, and 24 weeks. All patients were followed for up to 48 weeks after starting treatment. Of the 120 patients with toenail onychomycosis who entered the study, 98 were evaluable for efficacy. The involvement of the toenails was assessed both clinically and mycologically throughout the study. Evaluation at 24 weeks showed that complete cure of toenail onychomycosis was achieved in 67% of patients treated for 6 weeks, 82% treated for 12 weeks, and 85% treated for 24 weeks. At the end of a further 24 weeks of follow-up, cure rates were 40%, 71% and 79%, respectively. The adverse effects of terbinafine were mostly mild-to-moderate gastrointestinal symptoms. Three patients discontinued treatment because of side-effects. In conclusion, oral treatment with terbinafine is effective and generally well tolerated in patients with onychomycosis. Our results demonstrate that, for toenail onychomycosis, a treatment period of 12 weeks is sufficient.

Adult↗
PubMed1991

[Chronic atrophic acrodermatitis; a deceptive form of Lyme borreliosis].

Acrodermatitis chronica atrophicans (ACA) was diagnosed in 15 patients from the southern and eastern part of Friesland (the Netherlands). Twelve patients had one leg affected; three had more than one extremity involved. Frequent complaints were fatigue, paraesthesia, swelling and blue discoloration. The symptoms persisted for many years in most cases. The inflammatory stage was observed most frequently (13/15): violet-blue erythema, oedema, firm swelling and nodules. Atrophy (4/15) was observed once in the form of a scleroderma-like lesion. Neuropathy was found in five patients. Histological investigation showed infiltration with lymphocytes and plasma cells (13/15) and atrophy (2/15). Spirochaetes were demonstrated in biopsies of 13 patients. Specific antibodies against Borrelia burgdorferi were found in all patients. ACA appears to be not infrequent and must be distinguished from other inflammatory and vascular diseases, such as chronic venous insufficiency.

Acrodermatitis↗
PubMed1980

The enzyme histochemistry of metastasising basal cell carcinoma of the skin.

A case of metastasising basal cell carcinoma of the skin is presented. The tumour was analysed by enzyme histochemistry and cytology and criteria are set out for establishing the diagnosis of this rather uncommon entity. The lesion is apparently rich in enzymes of the pentose shunt and tricarboxylic acid cycles and shows insignificant acid phosphatase activity and no activity of alkaline phosphatase. These enzyme histochemical findings are thought to be important in the differential diagnosis of various types of tumour.

Adult↗
PubMed1977

Tibicorten and betamethasone valerate: a double-blind comparative study.

Tibicorten, a new fluorine-substituted corticosteroid for topical application, was compared with betamethasone valerate in a double-blind investigation with left-right examinations. There appeared to be no significant difference between the results obtained with each substance in the treatment of patients with acute or chronic eczema or with psoriasis.

Acute Disease↗