vascular ring


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Related to vascular ring: vascular ring anomaly

ring

 [ring]
1. any annular or circular organ, structure, or area.
2. in chemistry, a collection of atoms united in a continuous or closed chain.
abdominal ring, external an opening in the aponeurosis of the external oblique muscle for the spermatic cord or round ligament.
abdominal ring, internal an aperture in the transverse fascia for the spermatic cord or round ligament.
Albl's ring a ring-shaped shadow in radiographs of the skull, caused by aneurysm of a cerebral artery.
Bandl's ring see bandl's ring.
benzene ring the hexagon representing the arrangement of carbon atoms in a molecule of benzene, different compounds being derived by replacement of the hydrogen atoms by different elements or compounds.
Cannon's ring a focal contraction seen radiographically at the mid-third of the transverse colon, marking an area of overlap between the superior and inferior nerve plexuses.
conjunctival ring a ring at the junction of the conjunctiva and cornea.
constriction ring a contracted area of the uterus, where the resistance of the uterine contents is slight, as over a depression in the contour of the fetus, or below the presenting part.
fibrous ring of heart anulus fibrosus.
halo ring a metal orthosis used for traction in the treatment of spinal cord injuries. The halo apparatus can maintain stability and alignment of the cervical vertebrae while the patient is out of bed.
inguinal ring, deep an aperture in the transverse fascia for the spermatic cord or the round ligament.
inguinal ring, external superficial inguinal ring.
inguinal ring, internal deep inguinal ring.
inguinal ring, superficial an opening in the aponeurosis of the external oblique muscle for the spermatic cord or the round ligament.
Kayser-Fleischer ring a golden brown or green discoloration in the zone of Descemet's membrane in the limbic region of the cornea seen in wilson's disease and other liver disorders.
pathologic retraction ring a complication of prolonged labor marked by failure of relaxation of the circular fibers at the internal opening of the cervix, obstructing delivery of the infant. See also bandl's ring.
physiologic retraction ring the demarcation between the upper, contracting portion of the uterus in labor and the lower, dilating part.
Schwalbe's ring a circular ridge composed of collagenous fibers surrounding the outer margin of Descemet's membrane.
tympanic ring the bony ring forming part of the temporal bone at birth and developing into the tympanic plate.
umbilical ring the orifice in the abdominal wall of the fetus for transmission of the umbilical vein and arteries.
vascular ring a congenital anomaly of the aortic arch and its tributaries, the vessels forming a ring about the trachea and esophagus and causing varying degrees of compression.

vas·cu·lar ring

anomalous arteries (aortic arches) congenitally encircling the trachea and esophagus, at times producing pressure symptoms.

vas·cu·lar ring

(vas'kyū-lăr ring)
Anomalous arteries (embryonic pharyngeal arch arteries) congenitally encircling the trachea and esophagus, at times producing pressure symptoms.

vas·cu·lar ring

(vas'kyū-lăr ring)
Anomalous arteries congenitally encircling trachea and esophagus.
References in periodicals archive ?
If vascular rings are symptomatic, they are treated by transection of the ligamentum arteriosum.
Holinger, "Trends in vascular ring surgery," Journal of Thoracic and Cardiovascular Surgery, vol.
A rare cause of vascular ring. Eur J Cardiothorac Surg.
scutellarioides acuous extract was determined with the use of three vascular rings. During the first hour, a concentration - tension control curve with phenylephrine was carried out with each vascular ring.
We determined that the vascular ring in this patient was caused by a double aortic arch.
Meanwhile, isolated vascular ring test indicated that TFY had an significant effect on vasomotion, and antagonize vasospasm; moreover TFY also could increase cerebral blood flow (CBF) and reduce cerebrovascular resistance index (RI) in normal rabbits, which verified the effect of TFY on vasomotion and abnormal hemorheology.
The initial symptom of this disease is a soft cheese-like rotting of the vascular ring.
Pediatric surgeon Redmond Burke, MD, performed the world's first endoscopic vascular ring division, and later developed a series of minimally invasive tools to reduce risk in cardiac operations.
A barium swallow did not demonstrate any H-type tracheoesophageal fistula or compression by a vascular ring or sling.