Controversy still exists over differences between upper and lower limb blood pressures (BP) in neonates. We measured upper arm and calf systolic (S) and diastolic (D) BP and heart rate (HR) using 2 ...Dinamap 847 instruments simultaneously every half minute for several measurement periods of 5-10 min. Nine healthy term newborns were studied in active (AS) and quite (QS) sleep on post-natal days 1 and 5. The results were examined using unbalanced analyses of variance. Arm SBP was 62.3 +/- 1.6 mmHg and DBP 35.5 +/- 1.0 mmHg on day 1 in AS and QS. Calf values were not significantly different but were slightly higher (by 2-3 mmHg) in AS. Arm SBP and DBP rose by 8.5 and 5 mmHg, respectively, between days 1 and 5 but calf pressures rose less. Calf SBP and DBP were significantly lower (by 4.6 and 3.4 mmHg, respectively) than the arm values in QS on day 5. Arm SBP and DBP were dependent on post-natal age but not on sleep state while calf SBP and DBP and HR were dependent on both. Mean HR rose with age from 114 to 117.6 bpm in QS and from 118.6 to 122.4 bpm in AS. Our non-invasive BP measurements were similar to available invasive data. We postulate that differences in arm and calf vasoreactivity account for the different dependence on sleep state and for the unequal changes in arm and calf BE from days 1 to 5.
Describes in-basket exercises as a research methodology for examining how managers allocate attention and respond to information in their environment. Issues in organizational information processing ...and decision making to which this methodology might be applicable are discussed, and other methodologies for studying information processing are reviewed. (39 references) (LRW)
A retrospective analysis of the results of bacteriological examination of all urine samples from adult HIV infected patients admitted to the City Hospital, Edinburgh during the year 1 April 1988 to ...31 March 1989 was made to assess the usefulness of this investigation in HIV positive patients without clinical evidence of urinary tract infection.
A pulsed doppler ultrasound technique has been used to measure changes in blood velocities in the superior sagittal sinus, the jugular veins and intracranial and extracranial arteries in 13 neonates, ...and in the jugular veins and an extracranial artery in 13 adults, during unilateral and bilateral jugular venous compressions. The results have enabled us to determine how the subject under examination functionally uses his cranial venous drainage system in the resting state, and whether or not he can shunt obstructed venous flow through other cranial venous channels. We have found great variability between the subjects. In the resting situation the range of possibilities from total dependence on one jugular vein alone to usage of both jugular veins and the vertebral veins exists. Shunting of blood on jugular compression from either or both jugular veins to the vertebral veins may occur, and contralateral shunting between the jugular veins may be possible in both directions, in one direction or not at all.
From Field and Study Carter, Frances; Lewis, Harrison F.; Hardy, Ross ...
The Condor (Los Angeles, Calif.),
03/1939, Letnik:
41, Številka:
2
Journal Article
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