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Ho Cheol Kim 2 Articles
Rasmussen’s Aneurysm, Rare yet Acknowledged Cause of Massive Hemoptysis: Retrospective Review of 16 Cases
Seungwoo Chung, I Re Heo, Tae Hoon Kim, Sun Mi Ju, Jung-Wan Yoo, Seung Jun Lee, Yu Ji Cho, Sung Un Park, Kyung Nyeo Jeon, Ho Cheol Kim
Kosin Med J. 2021;36(2):136-143.   Published online December 31, 2021
DOI: https://doi.org/10.7180/kmj.2021.36.2.136
  • 2,703 View
  • 40 Download
Abstract PDFPubReader   ePub   
Objectives

Rasmussen’s aneurysm may cause life-threatening hemoptysis. We investigated the clinical characteristics and outcomes of patients with hemoptysis and Rasmussen’s aneurysm.

Methods

We retrospectively investigated patients who clinically presented with hemoptysis and were diagnosed with a Rasmussen’s aneurysm on spiral chest computed tomography (CT).

Results

Our study included 16 patients (men:women, 12:4; mean age, 65.25 ± 13.0 years). Massive hemoptysis was observed in nine patients (56%) and blood-tinged sputum in four patients (25%). Ten patients (62.5%) had a history of pulmonary tuberculosis, and three patients (18.7%) had underlying lung cancer. Chest CT revealed coexisting fungal balls in seven patients (43.7%). Bronchial artery embolization (BAE) was performed in 12 patients (75%). One patient died of uncontrolled massive hemoptysis.

Conclusions

Patients with Rasmussen’s aneurysm showed hemoptysis during the course of the disease; however, bleeding can be controlled with conservative therapy and radiological interventions, such as BAE.

Aging of the respiratory system
Seung Hun Lee, Su Jin Yim, Ho Cheol Kim
Kosin Med J. 2016;31(1):11-18.   Published online February 4, 2016
DOI: https://doi.org/10.7180/kmj.2016.31.1.11
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  • 18 Citations
Abstract PDFPubReader   ePub   
Abstract

Changes in the respiratory system caused by aging generally include structural changes in the thoracic cage and lung parenchyma, abnormal findings on lung function tests, ventilation and gas exchange abnormalities, decreased exercise capacity, and reduced respiratory muscle strength. Decreased respiratory system compliance caused by reduced elastic recoil of the lung parenchymaand thoracic cage is related to decreased energy expenditure by the respiratory system. Lung function, as measured by 1-second forced expiratory volume and forced vital capacity (FVC), decreases with age, whereas total lung capacity remains unchanged. FVC decreases because of increased residual volume and diffusion capacity also decreases. Increased physiological dead space and ventilation/perfusion imbalance may reduce blood oxygen levels and increase the alveolar-arterial oxygen difference. More than 20% decrease in diaphragmstrength is thought to beassociated withaging-related muscle atrophy. Ventilation per minute remains unchanged, and blood carbon dioxide concentration does not increase with aging. However, responses to hypoxia and hypercapnia are decreased. Exercise capacity also decreases, and maximum oxygen consumption decreases by >1%/year. Consequence of these changes, many respiratory diseases occur with aging. Thus, it is important to recognize these aging-related respiratory system changes.

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