نتایج جستجو برای: breath holding

تعداد نتایج: 43883  

2012
Inayatullah Khan Muhammad Amjad Khan

Objective: To evaluate the effectiveness of iron therapy in breath-holding spells. Material and Methods: This was a prospective interventional study, which was conducted in the Department of Pediatrics, Lady Reading Hospital, Peshawar, from September 2010 to October 2011. A total of 43 children between the ages of 8 and 54 months, with breath holding spells (BHS) were included. Relevant data wa...

Journal: :Journal of vascular and interventional neurology 2008
Vijay K Sharma Georgios Tsivgoulis Chou Ning Hock L Teoh Chrisostomos Bairaktaris Vincent Fh Chong Benjamin Kc Ong Bernard Pl Chan Arvind K Sinha

BACKGROUND The circle of Willis provides collateral pathways to perfuse the affected vascular territories in patients with severe stenoocclusive disease of major arteries. The collateral perfusion may become insufficient in certain physiological circumstances due to failed vasodilatory reserve and intracranial steal phenomenon, so-called 'Reversed-Robinhood syndrome'. We evaluated cerebral hemo...

Journal: :Cornea 2011
Wan-Cherng Liu Shui-Mei Lee Andrew D Graham Meng C Lin

PURPOSE To determine whether corneal biomechanical properties and intraocular pressure (IOP) are affected by eye rubbing and breath holding. METHODS Corneal hysteresis, corneal resistance factor, corneal compensated IOP (IOPcc), and Goldmann equivalent IOP (IOPg) were measured on both eyes of 40 subjects. Measurements were taken at baseline before eye rubbing (ER(0)) and before breath holding...

Journal: :Chest 1995
V Taskar N Clayton M Atkins Z Shaheen P Stone A Woodcock

BACKGROUND The onset of irregular inspiratory muscle activity has been observed toward the breakpoint of the breath-holding maneuver. We wondered if this was similar to the increased respiratory effort with paradoxical breathing seen during the resolution of an apnea in obstructive sleep apnea syndrome (OSAS). STUDY OBJECTIVE To compare the breakpoint of breath holding in normal subjects, OSA...

2005
S. G. Rubin

It is well known that energy density fluctuations at the early Universe give rise primordial black holes (BH) formation [1]. Widespread opinion is that these BHs are small enough with masses somewhere in the range MBH ∼ 10−5 − 10gram depending on specific model. What could be said about BHs with masses in the range 10 − 10gram? There exist a few number of inflationary models that predict BH pro...

Journal: :Journal of hypertension. Supplement : official journal of the International Society of Hypertension 1990
E O'Brien K O'Malley

As ambulatory blood pressure measurement becomes more widely accepted in hypertension research and in the clinical management of high blood pressure, the number of devices available on the market has increased considerably, reflecting the clinical demand. These devices are expensive, both in terms of capital and running costs. As we rely increasingly on data produced by ambulatory systems, it b...

Journal: :Blood pressure monitoring 2010
Bruce S Alpert

OBJECTIVE We evaluated the Tiba Medical Ambulo 2400 ambulatory blood pressure monitor accuracy by both the International Standards Organization (ISO) Standard and the British Hypertension Society (BHS) protocol. METHODS We tested children, adolescents, and adults. The requirements for both ISO and BHS were completed for 85 individuals each. RESULTS The Ambulo 2400 passed both ISO and BHS cr...

Journal: :Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance 1999
P M Jakob M A Griswold R R Edelman W J Manning D K Sodickson

SMASH (SiMultaneous Acquisition of Spatial Harmonics) was recently introduced as a novel rapid-imaging technique. The SMASH technique uses a partially parallel acquisition strategy, using spatial information from a radiofrequency coil array to accelerate imaging. This study constitutes the first application of SMASH to cardiac magnetic resonance imaging. The increased imaging speed provided by ...

Journal: :Hypertension 1995
E O'Brien N Atkins J Staessen

The introduction of 24-hour ambulatory blood pressure measurement into clinical practice created a large market for ambulatory blood pressure measurement devices. Forty-three such devices from 31 manufacturers or suppliers are now available to satisfy a market demand that is likely to increase. The aim of this article is to identify the devices available and then to examine critically any valid...

2006
Wolfgang J. Duschl Peter A. Strittmatter

• The luminosities of the quasars with the largest redshifts indicate that central BH masses of > 10 M⊙ were already present when the Universe was less than 10 years old (Barth et al. 2003). These masses are lower limits as they are based on the assumption that the BHs accrete at their Eddington limit. There is no indication that the (majority of the) sample of highest-redshift-quasar luminosit...

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