Heparinization of Alimentation Solutions

PEDIATRICS ◽  
1985 ◽  
Vol 75 (6) ◽  
pp. 1167-1167
Author(s):  
RONALD L. POLAND ◽  
MARY P. BEDARD
Keyword(s):  
Peripheral Vein ◽  
Catheter Patency ◽  
The Mean

We read with interest the article by Alpan and associates (Pediatrics 1984;74:375-378) concerning heparinization of alimentation solutions administered through peripheral veins. The authors conclude that heparinization of these solutions should be considered because they observed a significant reduction in the incidence of phlebitis and a prolongation of the mean period of catheter patency. The data presented in their table 2, however, reveals (through calculation) that the 13 infants in the heparinized group received peripheral vein alimentation for a mean duration of 20 days whereas those in the nonheparinized group received it for only ten days.

Human thyroid blood flow response to endogenous, exogenous human, and bovine thyrotrophin measured by electromagnetic flowmetry

1981 ◽  
Vol 98 (4) ◽  
pp. 540-548 ◽  
Author(s):  
Lennart Tegler ◽  
Jan Gillquist ◽  
Bo Anderberg ◽  
Gunilla Jacobson ◽  
Björn Lundström ◽  
...  
Keyword(s):  
Blood Flow ◽  
Serum Concentration ◽  
Human Thyroid ◽  
Peripheral Vein ◽  
Flow Response ◽  
Latent Time ◽  
Electromagnetic Flowmetry ◽  
Individual Variations ◽  
The Mean ◽  
Bovine Tsh

Abstract. Human thyroid blood flow (TBF) was studied with electromagnetic flowmetry during operation. Measurements were made of the effect on TBF of injections of bovine TSH into one inferior thyroid artery in 6 patients; 6 other patients were given human TSH, and in 10 patients measurements were made both of TBF and endogenous TSH released after administration of TRH in a peripheral vein. The TBF increased after all three types of injection. The mean of the TBF maxima after bovine TSH was 2.26 ± 0.35 (mean ± sem) relative to basal TBF, after human TSH 1.97 ± 0.28, and after TRH 1.64 ± 0.20. In the three groups combined it was 1.92 ± 0.16. The TBF was often increased already during the first recording period 1–10 min after TSH or TRH administration. The mean TBF was approximately doubled at 30–50 min. There were considerable inter-individual variations in the latent time and maximum response of TBF, especially after human TSH, but we found no correlation between the response and the TSH serum concentration in any group. A prompt, but inter-individually varying, increase in TBF was confirmed. This increase is suggested to be secondary to an increased intrafollicular metabolic activity and not primarily regulating the thyroid function.

scholarly journals Identification of The Intersegmental Plane By Arterial-Ligation Method During Thoracoscopic Segmentectomy

2021 ◽  
Author(s):  
Heng Zhao ◽  
Haiqi He ◽  
Lei Ma ◽  
Kun Fan ◽  
Jinteng Feng ◽  
...  
Keyword(s):  
Pulmonary Ventilation ◽  
Pure Oxygen ◽  
Lung Nodules ◽  
Peripheral Vein ◽  
Arterial Ligation ◽  
Thoracic Drainage ◽  
Intersegmental Plane ◽  
The Mean ◽  
Segmental Arteries ◽  
Ligation Method

Abstract Purpose The purpose of this study is to explore the feasibility of identifying the intersegmental plane by arterial ligation alone during thoracoscopic anatomical segmentectomy. Methods We selected 35 patients with peripheral small lung nodules who underwent thoracoscopic anatomical segmentectomy between May and December 2020. First, the targeted segmental arteries were distinguished and ligated during the operation. Then, bilateral pulmonary ventilation was performed with pure oxygen to fully inflate the entirety pulmonary lobes. After waiting for a while, the intersegmental plane appeared. Finally, the intersegmental plane was observed using thoracoscopy after indocyanine green was injected into the peripheral vein. The intersegmental planes determined by these two methods were compared. Results Thirty-four patients underwent segmental resection and one patient finally underwent lobectomy. The intersegmental planes were successfully observed in all patients using the arterial ligation method. The time from contralateral pulmonary ventilation to the appearance of the intersegmental plane was 13.7±3.2 min (6-19 min). The intersegmental planes determined by the arterial ligation method and the fluorescence method were comparable. After the operation, CT examinations showed that the remaining lung segments of all patients were well inflated. The mean duration of closed thoracic drainage was 3.1±0.9 days. Conclusion The arterial ligation method can be used to determine the intersegmental plane in anatomical segmentectomy. The method is feasible, reliable, and safe.

Effect of tracer infusion site on measurement of bicarbonate-carbon dioxide metabolism in dogs

1986 ◽  
Vol 60 (4) ◽  
pp. 1248-1253 ◽  
Author(s):  
R. S. Downey ◽  
A. Mellone ◽  
D. E. Matthews
Keyword(s):  
Carbon Dioxide ◽  
Venous Blood ◽  
Co2 Flux ◽  
Infusion Site ◽  
Peripheral Vein ◽  
Arterial Infusion ◽  
Arterial Blood ◽  
Infusion Study ◽  
Significant Difference ◽  
The Mean

Ten dogs were given a primed infusion of H13CO3- for 220 min while under general anesthesia. Isotopic steady state was reached within 60 min in exhaled CO2, femoral arterial blood HCO3-, and femoral venous blood HCO3-. Halfway through each infusion study, the site of tracer infusion was changed either from the central aorta to a peripheral vein, or vice versa. The mean HCO3(-)-CO2 flux measured from blood HCO3- enrichments was 15.7 +/- 2.1 (SD) mmol X kg-1 X h-1. The mean fraction of tracer recovered in exhaled CO2 was 79 +/- 7% (SD) of the infused dose. No significant difference in either HCO3- flux or recovery of tracer was found between the venous and arterial infusions of tracer. These results indicate that when venous administration of HCO3- tracer is compared with central arterial infusion, the initial loss of tracer into expired CO2 is an unimportant consideration in experiments measuring HCO3- kinetics.

scholarly journals Parenteral Nutrition via Peripheral Veins: A Feasibility Study

1987 ◽  
Vol 80 (7) ◽  
pp. 430-433 ◽  
Author(s):  
A Wilson ◽  
A W Goode ◽  
C J C Kirk ◽  
M Sugden
Keyword(s):  
Serum Lactate ◽  
Peripheral Vein ◽  
Esterified Fatty Acids ◽  
Group I ◽  
Significant Difference ◽  
The Mean ◽  
Preliminary Study ◽  
Feeding Regimen ◽  
Group Ii ◽  
Lactate Levels

Twenty patients who had undergone uncomplicated surgery of moderate severity were randomly allocated to two groups (both n = 10) who were fed using a peripheral vein for up to six days. Group I received, each day, a nutrient solution providing 10 grams of nitrogen as Perifusin (E Merck Ltd) and 1400 calories as dextrose and Intralipid (Kabivitrum Ltd) with an osmolality of 490 mosmol/kg. Group II received only 15 grams of nitrogen per day as Perifusin with an osmolality of 376 mosmol/kg. The mean (± s.e. mean) nitrogen balance over the study was similar in both groups, in Group I being −1.23 ± 0.89, and in Group II being −1.05 ± 1.08 g ( P > 0.05 Mann-Whitney U test). The nutrient mixture given to Group I resulted in elevated levels of serum 3-hydroxybutyrate and lower levels of serum non-esterified fatty acids. These data suggest that lipolysis and ketogenesis were suppressed. There was no significant difference in serum lactate levels in either group. Venous thrombophlebitis at the infusion site was assessed daily using Maddox's criteria, with a minimal degree of inflammation occurring in either group. This preliminary study suggests that a total parenteral feeding regimen may be designed for peripheral vein infusion. Further studies are indicated.

Thyroid glands in patients with Graves' disease are sources of thyrotropin-binding inhibitory (TBI) activity

1986 ◽  
Vol 112 (3) ◽  
pp. 351-354 ◽  
Author(s):  
Maria del Carmen Arqueros ◽  
Hugo Niepomniszcze ◽  
Juliàn Moreno
Keyword(s):  
Carotid Artery ◽  
Lymphocytic Infiltration ◽  
Graves Disease ◽  
Peripheral Vein ◽  
Thyroid Glands ◽  
Left And Right ◽  
The Mean ◽  
The Difference ◽  
Serum Tsh ◽  
Radioligand Method

Abstract. In order to investigate the main sources of production of Graves' immunoglobulins, 4 women with Graves' hyperthyroidism, which relapsed after withdrawal of methimazole (MMI) therapy, were selected for this study. The patients underwent subtotal thyroidectomy after pre-operative treatment with MMI and Lugol's solution. Seven blood samples were obtained in each patient during surgery from: 1) a peripheral vein, immediately before neck incision; 2) the carotid artery; 3) and 4) the left and right inferior thyroid veins, respectively, before manipulation of the thyroid; 5) and 6) the left and right inferior thyroid veins, respectively, after surgical handling of the gland; 7) a peripheral vein at the end of operation. Thyrotropin-binding inhibitory (TBI) activity was measured in all samples by a radioligand method. Serum TSH was also measured in those samples. There was a substantial increment of TBI in the thyroid veins compared with the activity in the carotid artery. The mean TBI was significantly higher after surgical handling of the thyroid lobes. The two lobes from each gland secreted differing levels of TBI, whereas the TSH concentrations were similar in all samples from each individual patients. We conclude that at least part of the TBI activity in patients with Graves' disease comes from the lymphocytic infiltration of the glands, and that differences in antibody production between the thyroid lobes may explain the difference in TBI activity in their respective thyroid veins.

Photo-electric Hβ and uvby photometry

1966 ◽  
Vol 24 ◽  
pp. 170-180
Author(s):  
D. L. Crawford
Keyword(s):  
Narrow Band ◽  
Line Strength ◽  
Interference Filter ◽  
B Stars ◽  
Relative Line ◽  
The Mean ◽  
F Stars ◽  
Two Parameters ◽  
Filter Photometry ◽  
The Continuum

Early in the 1950's Strömgren (1, 2, 3, 4, 5) introduced medium to narrow-band interference filter photometry at the McDonald Observatory. He used six interference filters to obtain two parameters of astrophysical interest. These parameters he calledlandc, for line and continuum hydrogen absorption. The first measured empirically the absorption line strength of Hβby means of a filter of half width 35Å centered on Hβand compared to the mean of two filters situated in the continuum near Hβ. The second index measured empirically the Balmer discontinuity by means of a filter situated below the Balmer discontinuity and two above it. He showed that these two indices could accurately predict the spectral type and luminosity of both B stars and A and F stars. He later derived (6) an indexmfrom the same filters. This index was a measure of the relative line blanketing near 4100Å compared to two filters above 4500Å. These three indices confirmed earlier work by many people, including Lindblad and Becker. References to this earlier work and to the systems discussed today can be found in Strömgren's article inBasic Astronomical Data(7).

A one-dimensional self-gravitating stellar gas

1966 ◽  
Vol 25 ◽  
pp. 46-48 ◽  
Author(s):  
M. Lecar
Keyword(s):  
Gravitational Field ◽  
Phase Space ◽  
Motion Picture ◽  
Space Distribution ◽  
Two Dimensional ◽  
One Dimensional ◽  
Phase Space Distribution ◽  
Dimensional Phase Space ◽  
The Mean

“Dynamical mixing”, i.e. relaxation of a stellar phase space distribution through interaction with the mean gravitational field, is numerically investigated for a one-dimensional self-gravitating stellar gas. Qualitative results are presented in the form of a motion picture of the flow of phase points (representing homogeneous slabs of stars) in two-dimensional phase space.

The motion of a lunar orbiter

1966 ◽  
Vol 25 ◽  
pp. 373
Author(s):  
Y. Kozai
Keyword(s):  
Degrees Of Freedom ◽  
Dimensional Space ◽  
Artificial Satellite ◽  
Equations Of Motion ◽  
Triaxial Ellipsoid ◽  
The Moon ◽  
Secular Motion ◽  
The Earth ◽  
Close Satellite ◽  
The Mean

The motion of an artificial satellite around the Moon is much more complicated than that around the Earth, since the shape of the Moon is a triaxial ellipsoid and the effect of the Earth on the motion is very important even for a very close satellite.The differential equations of motion of the satellite are written in canonical form of three degrees of freedom with time depending Hamiltonian. By eliminating short-periodic terms depending on the mean longitude of the satellite and by assuming that the Earth is moving on the lunar equator, however, the equations are reduced to those of two degrees of freedom with an energy integral.Since the mean motion of the Earth around the Moon is more rapid than the secular motion of the argument of pericentre of the satellite by a factor of one order, the terms depending on the longitude of the Earth can be eliminated, and the degree of freedom is reduced to one.Then the motion can be discussed by drawing equi-energy curves in two-dimensional space. According to these figures satellites with high inclination have large possibilities of falling down to the lunar surface even if the initial eccentricities are very small.The principal properties of the motion are not changed even if plausible values ofJ3andJ4of the Moon are included.This paper has been published in Publ. astr. Soc.Japan15, 301, 1963.

On nearly-commensurable periods in the restricted problem of three bodies, with calculations of the long-period variations in the interior 2:1 case

1966 ◽  
Vol 25 ◽  
pp. 197-222 ◽  
Author(s):  
P. J. Message
Keyword(s):  
Periodic Solution ◽  
Periodic Solutions ◽  
Large Amplitude ◽  
Restricted Problem ◽  
Small Amplitude ◽  
Minor Planets ◽  
Long Period ◽  
Numerical Integrations ◽  
Period Variations ◽  
The Mean

An analytical discussion of that case of motion in the restricted problem, in which the mean motions of the infinitesimal, and smaller-massed, bodies about the larger one are nearly in the ratio of two small integers displays the existence of a series of periodic solutions which, for commensurabilities of the typep+ 1:p, includes solutions of Poincaré'sdeuxième sortewhen the commensurability is very close, and of thepremière sortewhen it is less close. A linear treatment of the long-period variations of the elements, valid for motions in which the elements remain close to a particular periodic solution of this type, shows the continuity of near-commensurable motion with other motion, and some of the properties of long-period librations of small amplitude.To extend the investigation to other types of motion near commensurability, numerical integrations of the equations for the long-period variations of the elements were carried out for the 2:1 interior case (of which the planet 108 “Hecuba” is an example) to survey those motions in which the eccentricity takes values less than 0·1. An investigation of the effect of the large amplitude perturbations near commensurability on a distribution of minor planets, which is originally uniform over mean motion, shows a “draining off” effect from the vicinity of exact commensurability of a magnitude large enough to account for the observed gap in the distribution at the 2:1 commensurability.

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