Perfusion of nonventilated lung: failure of hypoxic vasoconstriction

Journal Article · Fri Jul 01 04:00:00 EDT 1983 · AJR, Am. J. Roentgenol.; (United States)

DOI:https://doi.org/10.2214/ajr.141.1.151· OSTI ID:5589357

Sostman, H D; Neumann, R D; Gottschalk, A; Greenspan, R H

Alveolar hypoxia is a well established cause of regional vasoconstriction such that nonventilated segments are not perfused. The paradoxical situation of retained perfusion of nonventilated lung has seldom been discussed. Three clinical examples are illustrated. In each case coexistent chronic obstructive lung disease may have contributed to this unexpected finding by reducing pulmonary vascular capacity such that blood flow diversion from hypoxic segments was not possible.

• Research Organization: Yale-New Haven Hospital, CT
• OSTI ID: 5589357
• Journal Information: AJR, Am. J. Roentgenol.; (United States), Journal Name: AJR, Am. J. Roentgenol.; (United States) Journal Issue: 1 Vol. 141:1; ISSN AAJRD
• Country of Publication: United States
• Language: English

Related Subjects

550601* -- Medicine-- Unsealed Radionuclides in Diagnostics
62 RADIOLOGY AND NUCLEAR MEDICINE
ALBUMINS
ANIMAL TISSUES
ANOXIA
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BLOOD FLOW
BODY
COUNTING TECHNIQUES
DAYS LIVING RADIOISOTOPES
DIAGNOSIS
DIAGNOSTIC TECHNIQUES
EVEN-ODD NUCLEI
HOURS LIVING RADIOISOTOPES
INHALATION
INTAKE
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LUNGS
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANS
PATIENTS
PERFUSED TISSUES
PROTEINS
RADIOISOTOPE SCANNING
RADIOISOTOPES
RESPIRATORY SYSTEM
SCINTISCANNING
TECHNETIUM 99
TECHNETIUM ISOTOPES
TISSUES
XENON 133
XENON ISOTOPES
YEARS LIVING RADIOISOTOPES