Unilateral absence of a pulmonary artery. Data from cardiopulmonary exercise testing.
نویسندگان
چکیده
A case of congenital, unilateral absence of a left pulmonary artery is described in a patient presenting with exertional dyspnea. Data from cardiopulmonary exercise testing suggest that the mechanism of dyspnea is secondary to a paradoxic elevation of the physiologic dead space to tidal volume ratio (VD/VT) during exercise.
منابع مشابه
Unilateral pulmonary artery absence or hypoplasia; radiographic and cardiopulmonary studies in five patients.
The clinical entity of unilateral pulmonary artery absence or hypopl sia can be readily diagnosed on the basis of routine clinical evaluation. This report is based upon 5 patients in whom the diagnosis was suspected and eventually confirmed with the aid of special studies. Characteristic hemnodynainic findings were demonstrated by means of cardiac catheterization and contrast visualization of t...
متن کاملPulmonary artery pressure measurement during exercise testing in patients with suspected pulmonary hypertension.
It is recognized that exercise produces abnormally large increases in pulmonary artery pressure in patients with pulmonary vascular disease as a consequence of a variety of disorders, but the relationship between pressure and cardiopulmonary exercise performance is poorly understood. This lack of understanding is due (in part) to difficulty making measurements of pulmonary haemodynamics using c...
متن کاملPulmonary Artery Agenesis with Bronchial Asthma
Unilateral Pulmonary Artery Agenesis (UPAA) is a rare congenital anomaly during the 4 th week of gestational age. It is defined as an absence of pulmonary parenchyma and its supporting artery. A 9-year-old girl was admitted to our hospital because of chronic cough. Chest examination showed a decrement in lung sound of right hemi-thorax with expiratory wheeze. Chest radiography (CXR) revealed a...
متن کاملThe invasive cardiopulmonary exercise test.
A 71-year-old man was evaluated for a chief complaint of progressive dys-pnea on exertion over the previous 5 years. The patient's medical history is significant for revascularized coronary artery disease, left diaphragmatic paresis, systemic hypertension, and obesity. His medications included aspirin 81 mg daily, metoprolol succinate 100 mg daily, lisinopril 10 mg daily, and simvastatin 20 mg ...
متن کاملProvocative testing of the pulmonary circulation: advances and unresolved issues.
In this issue of the European Respiratory Journal, OLIVEIRA et al. [1] from Harvard Medical School (Boston, MA, USA) report on rapid recovery of pulmonary vascular pressures after maximum incremental cycling exercise. The authors combined right heart catheterisation with concurrent cardiopulmonary exercise test in 95 patients referred for unexplained dyspnoea. 36 patients had precapillary pulmo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Chest
دوره 103 1 شماره
صفحات -
تاریخ انتشار 1993