Phân tích tư tưởng của nhân dân qua đoạn thơ: Những người vợ nhớ chồng… Những cuộc đời đã hóa sông núi ta trong Đất nước của Nguyễn Khoa Điềm
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Lesions associated with left to right shunt, such as AVSD, cause high pulmonary
blood flow and congestive cardiac failure. The normal physiological response to high
pulmonary blood flow is for the pulmonary vascular resistance to increase. With time,
the pulmonary vascular resistance will exceed the systemic vascular resistance, and
the flow across the shunt will reverse (Eisenmenger’s syndrome). Clinically, this is
associated with an initial improvement in symptoms of cardiac failure as pulmonary
blood flow reduces, followed by increasing cyanosis as the shunt reverses to become
right to left. Surgical closure of the shunt is not possible at this stage...
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