Temperature estimation of a pair of trapped ions.

We apply estimation theory to a system formed by two interacting trapped ions. By using the Fisher matrix formalism, we introduce a simple scheme for estimation of the temperature of the longitudinal vibrational modes of the ions. We use the ions interaction to effectively infer the temperature of the individual ions, by optimising the interaction time evolution and by measuring only over one of the ions. We also investigate the effect of a non-thermal reservoir over the inference approach. The non-classicality of one of the ions vibrational modes, introduced due to a squeezed thermal reservoir, does not directly affect the inference of the individual temperatures, although allowing the modes to be entangled. To check actual experimental conditions, we analyze the temperature inference under heating due to surface-electrode noise.

[Clinical utility of home blood pressure monitoring in patients under treatment]. / Utilidad clínica de la monitorización domiciliaria de la presión arterial en pacientes bajo tratamiento.

INTRODUCTION: A low number of patients who are treated with antihypertensive drugs achieve therapeutic goals. Home blood pressure monitoring is an excellent tool for studying this population. OBJECTIVES: To determine the prevalence of patients with controlled and uncontrolled hypertension, as well as white-coat-effect and masked hypertension, and to evaluate the relationship with target organ damage in different groups. METHODS: Blood pressure readings were performed simultaneously in the clinic and in the home using the same validated oscillometric equipment on 83 hypertensive patients on treatment with 2 or more antihypertensive drugs. They were then classified into 4 groups according to the cut-off values of the clinic and home blood pressure measurements. Left ventricular mass index, carotid intima media thickness, and microalbuminuria as markers of target organ damage, were also evaluated. RESULTS: Controlled blood pressure was present in 32.5%, 30.2% had sustained hypertension. The white coat effect was seen in 26.5%, while 10.8% were masked uncontrolled hypertension. Left ventricular mass index was higher in patients with no ambulatory control compared to controlled patients, and carotid IMT was also higher too in uncontrolled and white coat effect groups than controlled patients. CONCLUSIONS: More than one third of our patients who were treated with 2 or more drugs were not properly controlled, and they had significantly greater target organ damage than controlled patients.