Document Detail

Looking a bit superficial to the pleura.
MedLine Citation:
PMID:  25489469     Owner:  NLM     Status:  Publisher    
BACKGROUND: The internal thoracic artery (ITA) is a descendant branch of the subclavian artery. The former is located bilaterally in both internal sides of the thorax near the sternum and is accompanied by two internal thoracic veins (ITV). From a practical point of view, the ITA (and the ITV) identification is important because these vessels can be injured when pericardiocentesis with the parasternal approach is used. Other advantage of the ITA recognition is to check the patency of the ITA grafts in coronary artery revascularizated patients with new onset chest pain. The purpose of this article is to introduce a simple ultrasonographic technique for recognition of the aforementioned vessels and to highlight the utility of this finding in clinical practice.
FINDINGS: With linear probe and along paraesternal line, the internal thoracic vessels are recognized on grayscale imaging as an anechoic tubular structure immediately anterior to pleural line. Color Doppler identifies a pulsatile (ITA) and a non-pulsatile (ITV) flow. Spectral Doppler normally shows a high resistance velocity profile in non-grafted ITA and a phasic flow in ITV. A biphasic low resistance velocity profile is normally expected in the grafted and permeable ITA.
CONCLUSIONS: The ITA (non-grafted) and ITV are recognized routinely along the parasternal line. The operators should identify these vessels when the parasternal approach pericardiocentesis is required and should also consider obtaining spectral Doppler images to check permeability of grafted ITA in coronary artery bypass graft patients with chest pain.
Pablo Blanco; Giovanni Volpicelli
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-8-22
Journal Detail:
Title:  Critical ultrasound journal     Volume:  6     ISSN:  2036-3176     ISO Abbreviation:  Crit Ultrasound J     Publication Date:  2014  
Date Detail:
Created Date:  2014-12-9     Completed Date:  -     Revised Date:  2014-12-10    
Medline Journal Info:
Nlm Unique ID:  101517925     Medline TA:  Crit Ultrasound J     Country:  -    
Other Details:
Languages:  ENG     Pagination:  13     Citation Subset:  -    
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