Ramandeep Sahni

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To provide insight into the maturation of neural mechanisms responsible for variability in heart rate during quiet and active sleep, 6-hour continuous electrocardiographic recordings and simultaneous minute-by-minute behavioral activity state assignments were performed in 61 healthy, growing low birth weight infants. The infants weighed 795-1600 g at birth(More)
BACKGROUND The Penumbra system is effective for recanalization of the primary arterial occlusion (PAO) in acute stroke. However, clinical outcomes are not as promising. The authors hypothesized that the formation of procedural distal emboli (PDE) during mechanical thrombectomy may lead to poorer patient outcomes. DESIGN/METHODS A retrospective review of(More)
Epidemiologic studies provide strong evidence for the conclusion that sleeping in the prone position places infants at greater risk for sudden infant death syndrome (SIDS). Prior studies in newborn infants found that in the prone sleeping position there is less time awake and more quiet sleep, but little change in the amount of active sleep. To determine(More)
BACKGROUND Pulse oximetry is widely used in neonates. However, its reliability is often affected by motion artefact. Clinicians confronted with questionable oxygen saturation (SpO(2)) values often estimate the reliability by correlating heart rate (HR) obtained with the oximeter with that obtained by electrocardiogram. OBJECTIVE To compare the effects of(More)
This study describes the application of a novel quantitative method for classifying patterns of EEG activity that are associated with the predominant sleep-states of newborn infants. Periods in which there are bursts of high-voltage slow wave activity in the EEG that alternate with periods of low-voltage activity are termed Tracé-alternant. During active or(More)
This study aimed to compare traumatic and spontaneous carotid artery dissection (CAD) and vertebral artery dissection (VAD) with respect to age, pre-morbid risk factors, and site of dissection. Chart review was performed for 49 patients with CAD and VAD admitted to Westchester Medical Center, a level 1 trauma center, from 1999 to 2007. Presentation was(More)
Currently, intracerebral hemorrhage (ICH) has the highest mortality rate of all stroke subtypes (Counsell et al 1995; Qureshi et al 2005). Hematoma growth is a principal cause of early neurological deterioration. Prospective and retrospective studies indicate that up to 38% hematoma expansion is noted within three hours of ICH onset and that hematoma volume(More)
OBJECTIVES Sleep states and physiological changes during sleep may be useful in assessing brain function. We hypothesized that infants with transposition of great vessels (TGV) exhibit recognizable states of sleep under conditions of isocapnic hypoxemia. Also, we speculated that early correction of hypoxemia may result in significant changes in the(More)
Thirty-five healthy, premature infants, ranging from 30-39 weeks postconceptional age, were observed continuously for 6 to 24 hr. Behavioral state and electroencephalographic patterns were coded for each minute. Using these data, three questions regarding coding of states of sleep were addressed: What is the concordance between behavioral codes and specific(More)
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