Associated factors with otitis externa in the city of Antsiranana, Madagascar

Patrick M. Randrianandraina; Mamy J. J. Razafimahatratra; Corinne E. Solo; Angelo H. Valisoa; Nathalie C. Razay; Heritsilavo E. Ramilison; Andriarimanana H. N. Rakotoarisoa

doi:10.18203/issn.2454-5929.ijohns20201668

Authors

Patrick M. Randrianandraina Departement of ENT, Head and Neck Surgery, Professor ZAFISAONA Gabriel University Hospital of Mahajanga, Madagascar
Mamy J. J. Razafimahatratra Faculty of Medicine of Antananarivo, Antananarivo, Madagascar
Corinne E. Solo Departement of General surgery, Tanambao University Hospital, Antsiranana 201, Madagascar
Angelo H. Valisoa Departement of ENT, Head and Neck Surgery, Anosiala University Hospital, Antananarivo 101, Madagascar
Nathalie C. Razay Departement of ENT, Head and Neck Surgery, Place Kabary University Hospital, Antsiranana 201, Madagascar
Heritsilavo E. Ramilison Departement of ENT, Head and Neck Surgery, Place Kabary University Hospital, Antsiranana 201, Madagascar
Andriarimanana H. N. Rakotoarisoa Departement of ENT, Head and Neck Surgery, Place Kabary University Hospital, Antsiranana 201, Madagascar

DOI:

https://doi.org/10.18203/issn.2454-5929.ijohns20201668

Keywords:

Ears, Earaches, External otitis, Madagascar

Abstract

Background: Otitis externa is common in medical practice. This study aims to identify the contributing factors of otitis externa in the city of Antsiranana, Madagascar.

Methods: This is an analytical case-control type study, concerning patients with otitis externa, seen from January to July 2019, at the university hospital of place Kabary and at the grand Pavois medical practice, all in Antsiranana. The epidemiological, behavioural and clinical parameters were evaluated.

Results: We included 153 patients, among which 51were cases and 102 controls. The average age was 32.9 years (±19.41). The occurrence of otitis externa was significantly associated with the existence of a history of otitis externa, as well as ear cleaning 4 to 6 times per week (p=0.00; OR=46.17; CI=5.90-361.02). The diabetes exposure ratio was 18.79 in the ‘cases’ (p=0.00; CI=2.27-154.88), this ratio was 10.71 in the event of repeated swimming in pool (p=0.00; CI=2.22-51.70), 3.94 in case of ear cleaning with the cotton swab (p=00; CI=1.34-11, 60), and 2.23 when using headphones (p=0.02; CI=1.05-4.75). The treatment of a previous otological pathology was a protective factor against otitis externa (OR=0.1500, p=0.0159, CI=0.0259-0.8689).

Conclusions: The occurrence of otitis externa is related to well define daily behaviours and to other associated clinical factors. Managing these risk factors is the first step in treatment of otitis externa.

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