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Chapter-05 Hemodynamic Disorders

BOOK TITLE: Textbook of Pathology for Allied Health Sciences

Author
1. Nayak Ramadas
ISBN
9789352701070
DOI
10.5005/jp/books/14184_6
Edition
1/e
Publishing Year
2017
Pages
11
Author Affiliations
1. Kasturba Medical College, Mangalore, Manipal University, Karnataka, India, Kasturba Medical College, Manipal University, Mangalore, Karnataka, India, Yenepoya Medical College, Constituent of Yenepoya University (Accredited by NAAC with "A" grade), Mangaluru, Karnataka, India, Yenepoya Medical College, Yenepoya University, Mangaluru, Karnataka, India, Yenepoya Medical College, Yenepoya University (Accredited by NAAC with “A” grade), Mangaluru, Karnataka, India
Chapter keywords
Hyperemia, congestion, edema, thrombosis, embolism, infarction, shock, amniotic fluid embolism, venous emboli

Abstract

The objective of this chapter is to discuss hyperemia and congestion, edema, thrombosis, embolism, infarction, and shock. Hyperemia is an active process in which arteriolar dilation leads to increased blood flow to a tissue/organ. Congestion is a passive process resulting from reduced venous outflow of blood from a tissue/organ. Edema is defined as an abnormal increase in interstitial fluid within tissues. Thrombosis is defined as the process of formation of a solid mass in the circulating blood from the constituents of flowing blood. An embolus is a detached intravascular solid, liquid, or gaseous mass that is carried in the circulation to a site distant from its point of origin. An infarct is defined as a localized area of ischemic necrosis caused by occlusion of either the arterial supply or the venous drainage. The process is known as infarction. At the end of this chapter, self-assessment exercises have also been provided in this chapter.

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