Early Detection and Correction of Cerebral Desaturation With Noninvasive Oxy-Hemoglobin, Deoxy-Hemoglobin, and Total Hemoglobin in Cardiac Surgery: A Case Series.

Regional cerebral oxygen saturation (rS o2 ) obtained from near-infrared spectroscopy (NIRS) provides valuable information during cardiac surgery. The rS o2 is calculated from the proportion of oxygenated to total hemoglobin in the cerebral vasculature. Root O3 cerebral oximetry (Masimo) allows for individual identification of changes in total (ΔcHbi), oxygenated (Δ o2 Hbi), and deoxygenated (ΔHHbi) hemoglobin spectral absorptions.

Should we use diastolic function parameters to determine preload responsiveness in cardiac surgery? A pilot study.

Background: Left ventricular (LV) diastolic function (DF) may play an important role in predicting fluid responsiveness. However, few studies assessed the role of diastolic function in predicting fluid responsiveness. The aim of this pilot study was to assess whether parameters of right and left diastolic function assessed with transesophageal echocardiography, including the mitral E/e' ratio, is associated with fluid responsiveness among patients undergoing elective bypass graft surgery.

Ultrasound-guided transversus abdominis plane/genitofemoral blocks for a patient receiving extracorporeal life support.

Extracorporeal life support may be used in patients with refractory cardiogenic shock. The femoral venoarterial route can be used for implanting cannulae in patients who are hemodynamically unstable. Here we describe the use of an ultrasound-guided transversus abdominis plane block supplemented with the femoral component of the genitofemoral nerve as the anesthesia technique for peripheral cannulation of the femoral vessels in a patient with severe acute heart failure after myocardial infarction with ST-segment elevation.