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OBJECTIVE This prospective study was conducted to evaluate the value of sonographic B-lines (previously called "comet tail artifacts"), which are long, vertical, well-defined, hyperechoic, dynamic lines originating from the pleural line in assessment of interstitial lung diseases (ILD) and compare them with the findings of chest high-resolution computed(More)
OBJECTIVE uteroplacental blood flow is affected by myometrial contractions and hypotension. Epidural analgesia is frequently complicated by hypotension. The aim of the study was to compare the effect of bupivacaine-dexmedetomidine (BD) or bupivacaine - fentanyl (BF) on uterine artery pulsatitly index (UtA-PI) and umbilical artery pulsatitly index (UA-PI)(More)
—Subspace methods such as MUSIC, Minimum Norm, and ESPRIT have gained considerable attention due to their superior performance in sinusoidal and direction-of-arrival (DOA) estimation, but they are also known to be of high computational cost. In this paper, new fast algorithms for approximating signal and noise subspaces and that do not require exact(More)
BACKGROUND Cardiovascular dysfunction has been reported as an important mechanism of weaning failure. Brain natriuretic peptide (BNP) is a sensitive and specific marker for cardiovascular dysfunction. OBJECTIVE To determine the value of BNP levels measured at initiation and end of a 2h spontaneous breathing trial (SBT) as a predictor of successful weaning(More)