Validation of a new non-invasive automatic monitor of respiratory rate for postoperative subjects

BACKGROUND

Respiratory rate is an important measurement in patient care but frequently poorly assessed. We set out to develop a simple non-invasive device to reliably measure respiratory movements and estimate respiratory rate, in clinical circumstances.

METHODS

Respiratory movement was detected with an encapsulated tri-axial accelerometer (Orient speck) and the data transmitted wirelessly to a computer for analysis. We studied subjects after gynaecological surgery who received opioid analgesia, and compared the derived signal with a signal from nasal cannula using directly matched breaths and within the same 5 min epoch. We analysed the signals for 5 min epochs over a 15 h recording period.

RESULTS

For matched breath analysis, the instantaneous respiratory rates matched within 2 bpm on 86% of occasions. A similar match was found between epoch averages of the respiratory rate. The mean absolute difference between the respiratory rate measured by nasal cannula and Orient speck was 0.6 bpm. The Orient speck generated reliable measures of respiratory rate every 5 min in 95.4% of epochs.

CONCLUSIONS

The Orient speck provides a reliable measure of respiratory rate at frequent intervals in subjects receiving patient-controlled morphine analgesia after surgery.

[Dental manpower prediction in Israel for 2017]

A recent study published by the authors indicated that according to the Israeli Central Bureau of Statistics in 2008, Israel had 5800 active dentists, a figure well below the publication by the Ministry of Health. Based on this figure, using the manpower to population ratio method, the following results were obtained: The predicted number of dentist in 2017 would be 6090, based on, the estimated number of Israel: graduates, the estimated number of dentists who would arrive in Israel as immigrants or Israelis who studied abroad, based on an attrition rate of 3% and on the assumption that the number of dentists leaving the country is negligible. Table 2, based on manpower to population ratio, indicates that by 2017, Israel would have 1 dentist per 1400 population, a ratio which is still far above what many countries present, but high for Israel. This might reflect a dramatic change, from employment in public clinics, back to private practices. The results clearly indicate that a shortage of dentists is predicted in the near future and a major brainstorming is urgently required to evaluate these results.

[Dental practitioners in Israel: past, present and future]

Since 1980 various studies have been published in Israel dealing with dental manpower issues, utilizing several methods such as manpower to population ratio. The dental literature pointed out that dentistry in Israel has an over supply of dentists and that manpower to population ratio is one of the highest in the world 1:770. All studies were based on the information provided by the Ministry of Health which showed that Israel has over 9500 dentists. The Israel Central Bureau of Statistics figures showed a much smaller number which was 5700 active dentists. This enormous gap in between two sources of information, following strict examination of the data revealed that the Bureau of Statistics information is reliable and hence, the real manpower to population ratio in Israel in 2008 was 1:1271. Prediction of manpower is extremely important and the base line information is crucial for future evaluations.

Histone H3.3 incorporation provides a unique and functionally essential telomeric chromatin in embryonic stem cells

Little is known about the telomere chromatin dynamics of embryonic stem (ES) cell. Here, we demonstrate localization of histone H3.3 at interphase telomeres and enrichment of Ser31-phosphorylated H3.3 at metaphase telomeres in pluripotent mouse ES cells. Upon differentiation, telomeric H3.3S31P signal decreases, accompanied by increased association of heterochromatin repressive marks and decreased micrococcal nuclease sensitivity at the telomeres. H3.3 is recruited to the telomeres at late S/G2 phase, coinciding with telomere replication and processing. RNAi-depletion of H3.3 induces telomere-dysfunction phenotype, providing evidence for a role of H3.3 in the regulation of telomere chromatin integrity in ES cells. The distinctive changes in H3.3 distribution suggests the existence of a unique and functionally essential telomere chromatin in ES cells that undergoes dynamic differentiation-dependent remodeling during the process of differentiation.

Core Symposium: Suicide Across Europe. A GP-based Suicide Prevention Program in Hungary

Suicide, particularly in the case of current major depression, is quite common among patients who contact their GPs some weeks or months before their death. However, prior studies have shown that GP’s education, regarding the diagnosis and treatment of depressive disorders, can reduce suicide mortality in the given area served by trained GPs. The aim of our present study was to evaluate the effectiveness of a depression-management educational program for GPs in a region with a very high suicide rate (over 50 per 100.000) in Hungary. Twenty-eight GPs and their lead nurses, servicing 73,000 inhabitants in the region of Kiskunhalas, participated the 5-year educational program together with estabilishment of a Depression Outpatient Clinic and psychiatrist telephone consultation service. The annual suicide rate in the Kiskunhalas region decreased from 59.7/100.000 (5-year preintervention average) to 49.9/100.000. This decrease was significantly greater than both the county and whole Hungary (p=0.001 and p=0.001, respectively). However, the increase of antidepressant prescription was greater in the intervention region compared with both the county and whole Hungary and in women compared with men (p=0.02). There was no change in alcohol-related deaths or rate of unemployment in the intervention region during the whole study period (1996-2000 vs 2001 and 2005). The findings support earlier studies showing that continuous GP education on diagnosis and treatment of depression is an effective method of suicide prevention. The high importance of alcoholism in local suicides was unanticipated and not addressed, suggesting that optimal suicide prevention plans must also consider major local risk factors.

Universal intermittent properties of particle trajectories in highly turbulent flows

We present a collection of eight data sets from state-of-the-art experiments and numerical simulations on turbulent velocity statistics along particle trajectories obtained in different flows with Reynolds numbers in the range R{lambda}in[120:740]. Lagrangian structure functions from all data sets are found to collapse onto each other on a wide range of time lags, pointing towards the existence of a universal behavior, within present statistical convergence, and calling for a unified theoretical description. Parisi-Frisch multifractal theory, suitably extended to the dissipative scales and to the Lagrangian domain, is found to capture the intermittency of velocity statistics over the whole three decades of temporal scales investigated here.