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Featured researches published by Kian Zarchi.


British Journal of Dermatology | 2015

Diagnostic delay in hidradenitis suppurativa is a global problem.

D.M. Saunte; Jurr Boer; Alexander J. Stratigos; Jacek C. Szepietowski; I. Hamzavi; Kwang Hyun Kim; Kian Zarchi; Christina Antoniou; L. Matusiak; Henry W. Lim; Williams Ms; H.H. Kwon; M.A. Gürer; F. Mammadova; A. Kaminsky; Errol P. Prens; H.H. van der Zee; Vincenzo Bettoli; Stefania Zauli; Jürg Hafner; Severin Läuchli; Lars E. French; H. Riad; M. El-Domyati; H. Abdel-Wahab; Brian J. Kirby; Genevieve Kelly; P. Calderon; V. del Marmol; F. Benhadou

DEAR EDITOR, Hidradenitis suppurativa (HS) is clinically defined with recognized diagnostic criteria and recognizable physical characteristics. Untreated, the disease causes significant morbidity. The prevalence varies between 0 0003% and 4% depending on the study population. Estimates from insurance databases suggest a prevalence of < 0 1%. This variation strongly suggests a significant selection bias or misclassification, and it may be speculated that not all patients present for care. This is reinforced by clinical experience and published evidence indicating a significant delay in diagnosis. This study explores the delay in diagnosis for patients with HS on an international level. The study (survey) was conducted in 2013. Observational data were collected during routine visits or extracted from case records. Because of the simple and obvious symptomatology of recurrent painful lesions present in restricted welldefined areas of the body, patients’ self-reported history was considered valid regarding onset of symptoms. Consecutive patients with HS and psoriasis were included from each participating centre during a period of 4 months or less. The data were anonymized by removing any names, addresses and social security numbers, and included age, sex, age at disease onset, age at diagnosis, delay in diagnosis, time from onset of symptoms to first physician contact, age at first medical contact, number of physicians seen prior to the diagnosis, family history and disease severity. If the diagnosis was made by a primary care physician or by a specialist other than a dermatologist prior to seeing a dermatologist, this was recorded as the date of the diagnosis. Individual centres were responsible for and obtained any locally required permissions and signed informed consent forms, for example ethics committee approval, in accordance with national registry and data protection rules. Patients diagnosed with HS or psoriasis (and confirmed by the investigator) were included. The primary outcome was quantification of the delay in diagnosis. Additionally, documentation was made of both the delay in visiting a physician (and so gaining access to specialist treatment) and the relative delay in diagnosis of HS compared with psoriasis with/without a family history. The severity of HS was determined by Hurley’s staging criteria: stage I, mild; stage II, moderate and stage III, severe. In patients with psoriasis, severity was evaluated by the Psoriasis Area and Severity Index: score < 7, mild; 7–12, moderate and > 12, severe. The t-test, Wilcoxon rank sum test and v-test were used where appropriate. Univariate and multivariate logistic regression analyses were used to identify factors predictive of significant diagnostic delay. Diagnostic delay > 2 years was defined as significant. Diagnosis, sex, age of onset, family history and disease severity were selected as potentially important


British Journal of Dermatology | 2014

The prevalence of inverse recurrent suppuration: a population‐based study of possible hidradenitis suppurativa

G.R. Vinding; I.M. Miller; Kian Zarchi; Kristina Sophie Ibler; Christina Ellervik; Gregor B. E. Jemec

Hidradenitis suppurativa (HS) is a chronic inflammatory disease involving inverse recurrent suppuration (IRS). The epidemiology of the disease is not well described, with previous studies reporting prevalence estimates from 0·00033% to 4%.


JAMA Dermatology | 2013

Successful treatment of severe hidradenitis suppurativa with anakinra.

Kian Zarchi; Deirdre Nathalierr Dufour; Gregor B. E. Jemec

Hidradenitis suppurativa (HS) is a chronic inflammatory skin disease that is characterized by painful and suppurating lesions. Herein, we report a case of severe HS that was refractory to multiple treatments but responded rapidly to anakinra injections


JAMA Dermatology | 2014

Delivery of Compression Therapy for Venous Leg Ulcers

Kian Zarchi; Gregor B. E. Jemec

IMPORTANCE Despite the documented effect of compression therapy in clinical studies and its widespread prescription, treatment of venous leg ulcers is often prolonged and recurrence rates high. Data on provided compression therapy are limited. OBJECTIVE To assess whether home care nurses achieve adequate subbandage pressure when treating patients with venous leg ulcers and the factors that predict the ability to achieve optimal pressure. DESIGN, SETTING, AND PARTICIPANTS We performed a cross-sectional study from March 1, 2011, through March 31, 2012, in home care centers in 2 Danish municipalities. Sixty-eight home care nurses who managed wounds in their everyday practice were included. MAIN OUTCOMES AND MEASURES Participant-masked measurements of subbandage pressure achieved with an elastic, long-stretch, single-component bandage; an inelastic, short-stretch, single-component bandage; and a multilayer, 2-component bandage, as well as, association between achievement of optimal pressure and years in the profession, attendance at wound care educational programs, previous work experience, and confidence in bandaging ability. RESULTS A substantial variation in the exerted pressure was found: subbandage pressures ranged from 11 mm Hg exerted by an inelastic bandage to 80 mm Hg exerted by a 2-component bandage. The optimal subbandage pressure range, defined as 30 to 50 mm Hg, was achieved by 39 of 62 nurses (63%) applying the 2-component bandage, 28 of 68 nurses (41%) applying the elastic bandage, and 27 of 68 nurses (40%) applying the inelastic bandage. More than half the nurses applying the inelastic (38 [56%]) and elastic (36 [53%]) bandages obtained pressures less than 30 mm Hg. At best, only 17 of 62 nurses (27%) using the 2-component bandage achieved subbandage pressure within the range they aimed for. In this study, none of the investigated factors was associated with the ability to apply a bandage with optimal pressure. CONCLUSIONS AND RELEVANCE This study demonstrates the difficulty of achieving the desired subbandage pressure and indicates that a substantial proportion of patients with venous leg ulcers do not receive adequate compression therapy. Training programs that focus on practical bandaging skills should be implemented to improve management of venous leg ulcers.


International Wound Journal | 2012

The efficacy of maggot debridement therapy--a review of comparative clinical trials.

Kian Zarchi; Gregor B. E. Jemec

Over the last decade, maggot debridement therapy (MDT) has been recognized by many clinicians as a potential adjunct to conventional therapy, and many patients with non healing, chronic ulcers have been treated. Numerous case reports and case series have described the successful use of MDT in a variety of ulcers. However, comparative clinical trials and in particular randomized controlled trials investigating the efficacy of MDT are sparse.


Journal of Ultrasound in Medicine | 2016

Guidelines for Performing Dermatologic Ultrasound Examinations by the DERMUS Group.

Ximena Wortsman; Fernando Alfageme; Gaston Roustan; Salvador Arias-Santiago; Antonio Martorell; Orlando Catalano; Maria Scotto di Santolo; Kian Zarchi; Marcio Bouer; Claudia Gonzalez; Robert Bard; Anitha Mandava; Diana Gaitini

To support standardization for performing dermatologic ultrasound examinations.


Journal of The European Academy of Dermatology and Venereology | 2015

Pain and inflammation in hidradenitis suppurativa correspond to morphological changes identified by high-frequency ultrasound.

Kian Zarchi; N. Yazdanyar; Shiva Yazdanyar; Ximena Wortsman; Gregor B. E. Jemec

Hidradenitis suppurativa (HS) is an inflammatory skin disease with a chronic intermittent course. The current classification systems used to categorize disease severity provide limited insight into the degree of inflammation and pain, which are key symptoms of the disease.


Journal of Investigative Dermatology | 2015

Expert Advice Provided through Telemedicine Improves Healing of Chronic Wounds: Prospective Cluster Controlled Study

Kian Zarchi; Vibeke B. Haugaard; Deirdre Nathalie Dufour; Gregor B. E. Jemec

Telemedicine is widely considered as an efficient approach to manage the growing problem of chronic wounds. However, to date, there is no convincing evidence to support the clinical efficacy of telemedicine in wound management. In this prospective cluster controlled study, we tested the hypothesis that advice on wound management provided by a team of wound-care specialists through telemedicine would significantly improve the likelihood of wound healing compared with the best available conventional practice. A total of 90 chronic wound patients in home care met all study criteria and were included: 50 in the telemedicine group and 40 in the conventional group. Patients with pressure ulcers, surgical wounds, and cancer wounds were excluded. During the 1-year follow-up, complete wound healing was achieved in 35 patients (70%) in the telemedicine group compared with 18 patients (45%) in the conventional group. After adjusting for important covariates, offering advice on wound management through telemedicine was associated with significantly increased healing compared with the best available conventional practice (telemedicine vs. conventional practice: adjusted hazard ratio 2.19; 95% confidence interval: 1.15-4.17; P=0.017). This study strongly supports the use of telemedicine to connect home-care nurses to a team of wound experts in order to improve the management of chronic wounds.


Journal of The European Academy of Dermatology and Venereology | 2015

The association of metabolic syndrome and psoriasis: a population‐ and hospital‐based cross‐sectional study

I.M. Miller; Christina Ellervik; Kian Zarchi; Kristina Sophie Ibler; G.R. Vinding; Kim Mark Knudsen; Gregor B. E. Jemec

Psoriasis (PS) has been suggested to be associated with the metabolic syndrome (MetS) in numerous studies with conflicting results. The vast majority of previous data were based on PS subjects from hospitals, and when based on data from the general population the PS subjects were often identified in insurance health databases. Furthermore, many studies used a single method approach, e.g. self‐reported diagnosis.


Pediatric Dermatology | 2014

Ultrasound as a diagnostic aid in identifying neurofibromas.

Kian Zarchi; Ximena Wortsman; Gregor B. E. Jemec

Neurofibromatosis 1 is a multisystem disorder associated with substantial clinical variability. During childhood, few neurofibromas and café au lait spots may be the only manifest symptoms, making correct and timely diagnosis difficult. Herein we describe the clinical usefulness of ultrasound examination in identifying neurofibromas.

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I.M. Miller

University of Copenhagen

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G.R. Vinding

University of Copenhagen

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Fernando Alfageme

Autonomous University of Madrid

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Gaston Roustan

Autonomous University of Madrid

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