What is the normal size of the Sinotubular Junction?

Multi-detector computed tomography (MDCT) data demonstrate that the maximal diameter of the sinotubular junction is 28.2 ± 3.2 mm and that the mean distance between the basal attachment of the valvar leaflets and the sinotubular junction (sinotubular height) is 20.3 ± 3.3 mm9 (Prosthesis size).

What is the diameter of a normal aorta?

The normal diameter of the ascending aorta has been defined as <2.1 cm/m2 and of the descending aorta as <1.6 cm/m2. The normal diameter of the abdominal aorta is regarded to be less than 3.0 cm. The normal range has to be corrected for age and sex, as well as daily workload.

What is the normal size of the sinus of Valsalva?

The function of the normal sinuses is to prevent occlusion of the coronary artery ostia during systole when the aortic valve opens. The normal sinus diameter is less than 4.0 cm for men and 3.6 cm for women. Sinus of Valsalva aneurysms can be either congenital or acquired.

What is the normal size of aortic aneurysm?

In most adults, an aortic diameter >3.0 cm is generally considered aneurysmal. Normal aortic diameter varies with age, sex, and body habitus, but the average diameter of the adult human infrarenal aorta is approximately 2.0 cm; 95 percent of the adult population has an aortic diameter ≤3.0 cm [3].

What is Sinotubular Junction?

The sinotubular junction is the region of the ascending aorta between the aortic sinuses (of Valsalva) and where the normal tubular configuration of the aorta is attained. It marks the junction of the aortic root and ascending aorta.

What is the diameter of the aorta in MM?

Mean diameter of the ascending aorta was 54.2 ± 7.0 mm at dissection and 45.1 ± 5.7 mm at predissection, and that of the descending thoracic aorta was 47.1 ± 13.8 mm and 39.5 ± 13.1 mm, respectively.

What is a dilated ascending aorta?

An ascending aortic aneurysm is a weak spot in the top part of your aorta, which is the main artery in your body. The aneurysm bulges outward, and may cause your blood vessel wall to tear or break open. It’s a life-threatening condition.

What is rupture of sinus of Valsalva?

A ruptured sinus of Valsalva aneurysm (SVA) is a rare cardiac abnormality, and is associated with a severe left-to-right shunt if communicating with the right-sided heart chambers. Uncorrected, the rupture almost invariably causes deterioration in heart function. Early surgical intervention is the treatment of choice.

How big is a 4 cm aneurysm?

For the thoracic aorta, a diameter greater than 3.5 cm is generally considered dilated, whereas greater than 4.5 cm would be considered aneurysmal. Aneurysms may affect one or more segments of the thoracic aorta, including the ascending aorta, the arch, and the descending thoracic aorta.

What is the sinotubular junction?

The sinotubular junction is the region of the ascending aorta between the aortic sinuses (of Valsalva) and where the normal tubular configuration of the aorta is attained. It marks the junction of the aortic root and ascending aorta. 1. Sinnatamby CS. Last’s Anatomy, Regional And Applied.

How is sinotubular junction size in aortic valve reimplantation determined?

Background: Sinotubular junction (STJ) size in aortic valve reimplantation procedures is usually predetermined on the basis of experience or intraoperative mathematical calculations. Given the small coaptation reserve of aortic valve leaflets, small errors can produce an incompetent aortic valve.

How do you reduce the size of a sinotubular junction?

Fig 3. Method to reduce sinotubular junction size is illustrated. The implanted aortic root is pressurized (left), and sinotubular junction size is reduced by banding the neocommissural ridge with Dacron rings of decreasing size (center, right).

What is the coefficient of variation for the isthmic and sinotubular junction?

Coefficients of variation ranged from 3.4% for the isthmic region to 5.5% for the sinotubular junction in one observer, and from 3.4% for the second transverse segment to 6.9% for the sinotubular junction in two observers (table ​(table33). Table 3 Intra- and interobserver variability