Dieulafoy's Lesion: A Rare Cause of Gastrointestinal Bleeding after Interrupted Aortic Arch Repair in an Adult.

Survival into adulthood in patients with an interrupted aortic arch (IAA) is exceedingly rare. A recent literature review found 25 reported cases of IAA in adults. We describe the first case of prolonged, occult, postoperative gastrointestinal bleeding as a major complication following IAA surgery.

Mechanical circulatory support for high-risk surgical aortic valve and ascending aortic replacement in severe bicuspid aortic valve stenosis: a case series.

Background: Bicuspid aortic valve (BAV) is the most common congenital heart defect (reported incidence of 0.5%-2%) and is commonly associated with proximal aortic dilation. Patients with severe aortic stenosis (AS) of BAV have been shown to have worse pre-operative left ventricular (LV) function as well as a higher incidence of post-operative heart failure hospitalization when compared with analogous patients with tri-leaflet aortic valve disease.

Custodiol cardioplegia for temporary mechanical circulatory support.

Several patients requiring biventricular mechanical circulatory support in the acute setting will not be candidates for less invasive advanced heart failure therapies not requiring median sternotomy. Temporary biventricular assist device may provide reliable short term support bridging patients to recovery or further advanced treatments. However, this exposes patients to increased risk of reoperation due to bleeding and further exposure to blood products.

Can Fetal Heart Lie? Intrapartum CTG Changes in COVID-19 Mothers.

Background: COVID-19 infection has raised multiple concerns in pregnant mothers; many questioned the risk of vertical transmission and the implication on the feto-maternal outcome. Cardiotocogrm (CTG) is the principal method to observe intrapartum fetal well-being. This paper aims to verify intrapartum CTG changes seen in seropositive COVID-19 mothers versus healthy controls and looks into their relation to subsequent delivery mode and neonatal outcome.

Revisiting the seed-assisted synthesis of zeolites without organic structure-directing agents: insights from the CHA case.

Herein, the crystallization behaviour of the CHA zeolite synthesized the seed-assisted method and in the absence of an organic structure-directing agent has been revisited. To date, the working hypothesis of the seed-assisted synthesis method is that the parent gel and seed share the common composite building unit (cbu) of the targeted zeolite crystal. In the case of the CHA zeolite, we reveal that the parent gel in the absence of CHA seeds leads to the formation of the MER zeolite, which does not follow the cbu working hypothesis.