Clinical Outcomes in Patients with Phosphate Abnormalities After Cardiac Surgery: A Retrospective Cohort Study.

Background: The clinical significance and incidence of phosphate abnormalities in cardiac surgery have not been investigated extensively. We hypothesize that phosphate abnormalities are associated with a longer time to tracheal extubation.

Methods: This was a single-center, retrospective cohort study in patients who underwent nontransplant cardiac surgery with cardiopulmonary bypass between August 2009 and December 2020.

Anatomy of an extreme event: What can we infer about the history of a heavy-tailed random walk?

Extreme events are by nature rare and difficult to predict, yet are often much more important than frequent, typical events. An interesting counterpoint to the prediction of such events is their retrodiction-given a process in an outlier state, how did the events leading up to this endpoint unfold? In particular, was there only a single, massive event, or was the history a composite of multiple, smaller but still significant events? To investigate this problem we take heavy-tailed stochastic processes (specifically, the symmetric, α-stable Lévy processes) as prototypical random walks. A natural and useful characteristic scale arises from the analysis of processes conditioned to arrive in a particular final state (Lévy bridges).

The Association Between Hypophosphatemia and Lactic Acidosis After Cardiac Surgery With Cardiopulmonary Bypass: A Retrospective Cohort Study.

Objectives: The clinical significance of hypophosphatemia in cardiac surgery has not been investigated extensively. The aim of this study was to evaluate the association of postoperative hypophosphatemia and lactic acidosis in cardiac surgery patients at the time of intensive care unit (ICU) admission.

Design: A retrospective cohort study.

Retraction: Stent Migration Following Endovascular Intervention in May-Thurner Syndrome.

[This retracts the article DOI: 10.7759/cureus.29714.

Stent Migration Following Endovascular Intervention in May-Thurner Syndrome.

Developments in endovascular therapies have made stenting a common practice in the treatment of peripheral vascular diseases, including venous disorders such as May-Thurner syndrome. The placement of a stent in the venous system carries the risk of stent migration which although small occurs with a 3% incidence rate and can be life-threatening given the risk of pulmonary infarction, tricuspid regurgitation, and right-sided heart failure. Herein we report a case of stent embolization from the common iliac vein into the right side of the heart causing tricuspid regurgitation.