Images at the time of admission show the grafts of the ascending and descending aorta, the dilated native segment of the arch, and the residual dissection of the abdominal aorta

ASVIDE ◽  
2018 ◽  
Vol 5 ◽  
pp. 343-343
Author(s):  
Paul Schoenhagen
Keyword(s):  
Abdominal Aorta ◽  
Descending Aorta ◽  
Time Of Admission

Effective distributed compliance of the canine descending aorta estimated by modified T-tube model

1993 ◽  
Vol 264 (6) ◽  
pp. H1977-H1987 ◽  
Author(s):  
R. Burattini ◽  
K. B. Campbell
Keyword(s):  
Abdominal Aorta ◽  
Renal Arteries ◽  
The Body ◽  
Tube Length ◽  
Model Parameters ◽  
Aortic Compliance ◽  
Pass Filter ◽  
Descending Aorta ◽  
T Tube ◽  
Elastic Tubes

To estimate descending thoracic aortic compliance in anesthetized open-chest dogs, a modified T-tube arterial model was used. This model consists of two uniform and lossless elastic tubes, one representing arteries going toward the head and upper limbs and the other (body tube) representing descending aortic circulation to the trunk and lower limbs. Each tube terminates with a generalized first-order low-pass filter load. Pressure and flow in the ascending aorta and flow in the upper descending aorta were measured and used to estimate model parameters. Using the estimated model parameters, we calculated the pressure waveshape at the termination of the body tube. Comparison of this model-predicted pressure with pressure measured in the abdominal aorta near the origin of renal arteries suggested that the end of the body tube (effective reflecting site of the body circulation) corresponds to this major branching site of the abdominal aorta. To calculate the length of the body tube, we used aortic pulse wave velocity estimated from the measurements of pressure in ascending and abdominal aorta. Calculated body tube length averaged 30.3 +/- 2.8 cm and approximated the measured length (30.6 +/- 3.0 cm) of the aorta from the arch to the region of the origin of renal arteries. Compliance of the body tube averaged 123 +/- 20 x 10(-6) g-1.cm4.s2 and was interpreted as the descending thoracic aortic compliance. The ratio of this compliance to the body tube length gave an estimate of the effective distributed compliance, i.e., the compliance per unit length that would be observed in the absence of tapering. This ratio averaged 4.10 +/- 0.86 x 10(-6) g-1.cm3.s2 and fell in between the values of local aortic compliance independently estimated along the descending thoracic aorta from measurements of pressure and diameter. Thus tube compliance resulted in a physically identifiable property. This property was contrasted with the ill-defined effective compliances of the terminal loads.

Changes in Arterial Dilution Curves Associated With Blockage of Abdominal Aorta, Hypoxia and Hemorrhage

1956 ◽  
Vol 187 (2) ◽  
pp. 283-287 ◽  
Author(s):  
Gordon C. Ring ◽  
W. Glen Moss ◽  
I. Reiner ◽  
H. Partin ◽  
T. Kurbatov
Keyword(s):  
Pulmonary Artery ◽  
Abdominal Aorta ◽  
Peak Concentration ◽  
Red Cells ◽  
Regular Pattern ◽  
Appearance Time ◽  
Descending Aorta ◽  
Concentration Time ◽  
Mean Concentration ◽  
Dilution Curves

The dye T-1824 and red cells marked with P32 were injected into the pulmonary artery of dogs. The characteristics of arterial dilution curves after blocking the descending aorta, after hypoxia and after transfusion following hemorrhage were studied. After pulmonary pressure was raised by blocking the aorta, the figure for peak concentration time divided by appearance time (PTC/AT) was increased, the concentration of labels rose to three-fourths of peak concentration more quickly and the figure for peak concentration divided by mean concentration (PC/MC) diminished. The results following hypoxia were variable. In only one out of eight dogs studied were the changes similar to those described above. In five opposite changes were found and in two the changes were mixed. Transfusion following hemorrhage resulted in changes which showed no regular pattern. The changes with blocking of aorta are those which we would predict if pulmonary shunts open. Those with hypoxia indicate that the opposite changes have occurred.

scholarly journals Extra-anatomic thoracic aortic bypass operations

Medicina ◽  
2008 ◽  
Vol 44 (5) ◽  
pp. 373
Author(s):  
Arūnas Valaika ◽  
Gediminas Norkūnas ◽  
Gintaras Kalinauskas ◽  
Giedrė Nogienė ◽  
Jurgis Verižnikovas ◽  
...  
Keyword(s):  
Aortic Dissection ◽  
Abdominal Aorta ◽  
Bypass Graft ◽  
Emergency Operation ◽  
Aortic Aneurysms ◽  
Major Surgery ◽  
Descending Aorta ◽  
Aorta Aneurysm ◽  
Aortic Bypass ◽  
Thoracic Aneurysms

Objective. When the patient condition contraindicates major surgery for descending thoracic aneurysms, the surgeon should consider using an ascending aorta to abdominal aorta bypass graft, leaving the diseased segment undisturbed. Our experience with eight patients is presented. Material and methods. Between 1988 and 2008, eight patients were treated for the following indications: reoperation for coarctation (two patients), complicated descending aortic aneurysms (five patients), and posttraumatic descending aorta dissection (one patient). The mean age of the patients was 44±8 years (range, 27–53 years). There were 6 (75%) males and 2 (25%) females. Emergency operations were performed in three patients (two with aortic recoarctation, one with posttraumatic aortic dissection). Two cases were reoperations (both after recoarctation). Descending aorta was ligated in seven cases. Distal anastomosis was connected with abdominal aorta in four cases and with iliac arteries in four patients. Results. Three early deaths occurred. Two patients died after emergency operation after recoarctation and posttraumatic aortic dissection, and one patient died after descending aorta aneurysm correction because of bleeding. Conclusions. In complex aortic coarctation, extra-anatomic bypass operation remains an effective procedure. The usage of these procedures in patients with descending aortic aneurysms remains complicated.

Severe obstructive calcifications affecting the descending and suprarenal abdominal aorta without coexisting peripheral atherosclerotic disease – coral reef aorta

VASA ◽  
2006 ◽  
Vol 35 (3) ◽  
pp. 206-208 ◽  
Author(s):  
Teebken ◽  
Pichlmaier ◽  
Kühn ◽  
Haverich
Keyword(s):  
Coral Reef ◽  
Abdominal Aorta ◽  
Bypass Graft ◽  
Retroperitoneal Approach ◽  
Rare Form ◽  
Iliac Arteries ◽  
Descending Aorta ◽  
Aortic Replacement ◽  
Thoracic And Abdominal ◽  
Common Iliac Arteries

The case of a 58-year-old woman with leg claudication due to a very rare form of atherosclerosis affecting the descending thoracic and abdominal aorta – known as coral reef aorta – without involvement of the femoro-distal vessels is reported. The patient was treated with a polyester bifurcation graft from the proximal descending aorta to both common iliac arteries via a left dorsal minithoracotomy and a second left retroperitoneal approach. This unusual approach was chosen instead of direct aortic replacement in order to prevent paraplegia. In case of future visceral or left renal malperfusion the diseased artery can be connected to the prosthesis directly or by the use of an additional bypass graft. This would not be the case with a conventional axillo-bifemoral graft.

scholarly journals A Case of Replacement of the Ascending Aorta, Transverse Aortic Arch, Descending Aorta, and Upper Abdominal Aorta Using the "Elephant Trunk" Operation.

1994 ◽  
Vol 23 (2) ◽  
pp. 129-132 ◽  
Author(s):  
Norihiko Shiiya ◽  
Keishu Yasuda ◽  
Jun'ichi Oba ◽  
Masatoshi Miyama ◽  
Michiaki Imamura ◽  
...  
Keyword(s):  
Aortic Arch ◽  
Abdominal Aorta ◽  
Ascending Aorta ◽  
Elephant Trunk ◽  
Descending Aorta ◽  
Upper Abdominal
Sign in / Sign up

Export Citation Format

Share Document