Chest
Clinical InvestigationsEpidemiology of Spontaneous Pneumothorax in Women
Section snippets
Materials and Methods
The Pneumothorax Study Squad consists of the 20 respiratory specialists belonging to the national hospitals which are distributed in all Japanese areas and two advisers in epidemiology and clinical medicine.
We gathered all spontaneous pneumothorax data accumulated for 5,536 patients with spontaneous pneumothorax during the past eight years for all Japanese areas. For idiopathic pneumothorax, the number was 3,895 cases (70.4 percent), for secondary pneumothorax, the number was 1,641 cases (29.6
Age Distribution (Fig 1)
As shown in Figure 1, the relative incidences of idiopathic pneumothorax and secondary pneumothorax have been arranged with respect to age brackets. The 20-year age bracket reveals the highest incidence of 34.47 percent, presenting a high-rise single-peak curve. From the age of 30, the curve shows a moderate fall with advancing years.
Secondary pneumothorax occurred in the 30-year age bracket at a relatively high incidence of 21.9 percent. The curve has a single-peak path exhibiting a moderate
Discussion
With the increase in the number of spontaneous pneumothorax cases, there has also been an increasing number of reported cases of catamenial pneumothorax as a specifically female condition. The mechanism for the development of this condition is being argued at present. In contrast to the normal or general form of idiopathic pneumothorax, this condition has come to be treated as a special form of the disease. The nature of catamenial pneumothorax is associated with ectopic endometritis through
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2020, Heart Lung and CirculationCitation Excerpt :Indeed, the average age of onset in males is 26.6 years, while in females it is 30.9 years. Finally, a double peak in incidence was found: the first between 15 and 30 years of age; the second between 40 and 45 years of age [4–17]. Regarding symptoms, pain and dyspnoea in its various forms (frequently reported as breathlessness, tachypnoea, and fatigue) were the most often reported.
Primary Spontaneous Pneumothorax in Menstruating Women Has High Recurrence
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2015, American Journal of Emergency Medicine
Manuscript received April 24; revision accepted August 8.
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Pneumothorax Study Squad in Japan. Other members are: Drs. M. Akutagawa, M. Aoki, K. Egawa, T. Hagiwara, M. Hayakawa, K. Ikegaki, R. Izuchi, S. Izumi, K. Kudo, M. Miyamori, H. Nagano, H. Nakajima, I. Omura, S. Sakai, T. Sato, K. Shigematsu, S. Suzuki, S. Yaguchi, and Y. Yamamoto.