Use of Continuous Blood Volume Monitoring to Detect Inadequately High Dry Weight

1996 ◽  
Vol 19 (7) ◽  
pp. 411-414 ◽  
Author(s):  
F. Lopot ◽  
P. Kotyk ◽  
J. Bláha ◽  
J. Forejt
Keyword(s):  
Blood Volume ◽  
Vena Cava ◽  
Extracellular Fluid ◽  
Dry Weight ◽  
Whole Body ◽  
The Status ◽  
Varying Length ◽  
Group 3 ◽  
Group 2 ◽  
Total Body

A continuous blood volume monitoring (CBVM) device (Inline Diagnostics, Riverdale, USA) was used to study response to prescribed ultrafiltration during haemodialysis (HD) in 66 stabilised HD patients. Fifty percent of patients showed the expected linear decrease in BV right from the beginning of HD (group 1), 32% exhibited no decrease at all (group 2), while eighteen percent formed the transient group 3 which showed a plateau of varying length after which a decrease occurred. The correct setting of dry weight was verified through evaluation of the ratio of extracellular fluid volume to total body water (VEC/TBW) in 26 patients by means of whole body multifrequency impedometry MFI (Xitron Tech., San Diego, USA) and through measurement of the Vena Cava Inferior diameter (VCID) pre and post HD (in 6 and 5 patients from groups 1 and 3 and from group 2, respectively). The mean VEC/TBW in groups 1 and 3 was 0.56 pre and 0.51 post HD as compared to 0.583 and 0.551 in group 2. VCID decreased on average by 14.1% in groups 1 and 3 but remained stable in group 2. Both findings thus confirmed inadequately high estimation of dry weight. Since CBVM is extremely easy to perform it can be used as a method of choice in detecting inadequately high prescribed dry weight. The status of the cardiovascular system must always be considered before final judgement is made.

Is oxygen supply a limiting factor for survival during rewarming from profound hypothermia?

2006 ◽  
Vol 291 (1) ◽  
pp. H441-H450 ◽  
Author(s):  
Timofei V. Kondratiev ◽  
Kristina Flemming ◽  
Eivind S. P. Myhre ◽  
Mikhail A. Sovershaev ◽  
Torkjel Tveita
Keyword(s):  
Blood Volume ◽  
Tissue Oxygenation ◽  
Limiting Factor ◽  
Myocardial Tissue ◽  
Circulating Blood Volume ◽  
Profound Hypothermia ◽  
Group 3 ◽  
Vascular Beds ◽  
Group 2 ◽  
Group 1

It has been postulated that unsuccessful resuscitation of victims of accidental hypothermia is caused by insufficient tissue oxygenation. The aim of this study was to test whether inadequate O2supply and/or malfunctioning O2extraction occur during rewarming from deep/profound hypothermia of different duration. Three groups of rats ( n = 7 each) were used: group 1 served as normothermic control for 5 h; groups 2 and 3 were core cooled to 15°C, kept at 15°C for 1 and 5 h, respectively, and then rewarmed. In both hypothermic groups, cardiac output (CO) decreased spontaneously by >50% in response to cooling. O2consumption fell to less than one-third during cooling but recovered completely in both groups during rewarming. During hypothermia, circulating blood volume in both groups was reduced to approximately one-third of baseline, indicating that some vascular beds were critically perfused during hypothermia. CO recovered completely in animals rewarmed after 1 h ( group 2) but recovered to only 60% in those rewarmed after 5 h ( group 3), whereas blood volume increased to approximately three-fourths of baseline in both groups. Metabolic acidosis was observed only after 5 h of hypothermia (15°C). A significant increase in myocardial tissue heat shock protein 70 after rewarming in group 3, but not in group 2, indicates an association with the duration of hypothermia. Thus mechanisms facilitating O2extraction function well during deep/profound hypothermia, and, despite low CO, O2supply was not a limiting factor for survival in the present experiments.

TOTAL BODY CHLORIDE IN TUBERCULOUS MENINGITIS

PEDIATRICS ◽  
1954 ◽  
Vol 14 (2) ◽  
pp. 87-92
Author(s):  
DONALD B. CHEEK
Keyword(s):  
Tuberculous Meningitis ◽  
Metabolic Alkalosis ◽  
Extracellular Fluid ◽  
Fluid Restriction ◽  
Potassium Depletion ◽  
Water Excretion ◽  
Serum Chloride ◽  
The Status ◽  
Total Body

Seven children with tuberculous meningitis have been studied. In the absence of fluid restriction and vomiting, hypotonic expansion of the extracellular fluid has been revealed. This draws attention to an alteration in water excretion. Metabolic alkalosis yields evidence of cell potassium depletion. The serum chloride is no indication as to the status of total body chloride.

scholarly journals Tirilazad mesylate (U-74006F) inhibits effects of endotoxin in dogs

1995 ◽  
Vol 268 (5) ◽  
pp. H1847-H1855 ◽  
Author(s):  
H. Zhang ◽  
H. Spapen ◽  
P. Manikis ◽  
P. Rogiers ◽  
G. Metz ◽  
...  
Keyword(s):  
Endotoxic Shock ◽  
Left Ventricular ◽  
Oxygen Extraction ◽  
Volume Index ◽  
Whole Body ◽  
Control Group ◽  
Stroke Work ◽  
Critical Oxygen ◽  
Group 3 ◽  
Group 2

The present study explored the effects of a potent antioxidant, the 21-aminosteroid U-74006F, on the systemic and regional hemodynamics and the oxygen extraction capabilities during endotoxic shock. Twenty-four anesthetized dogs were randomized into three groups. Group 1 (n = 8) served as control. Group 2 (n = 8) and group 3 (n = 8) received 2 mg/kg iv of Escherichia coli endotoxin, followed 30 min later by saline infusion. Group 3 was given U-74006F as an intravenous bolus of 80 micrograms/kg followed by an infusion of 10 micrograms.kg-1.min-1, and group 2 received an equivalent volume of vehicle. Tamponade was induced 30 min later to study the oxygen extraction capabilities of the animals. Compared with the endotoxin-alone group, the U-74006F-treated dogs maintained higher mean arterial pressure, cardiac index, stroke volume index, and left ventricular stroke work index and lower pulmonary vascular resistance. They also showed a higher fractional blood flow to mesenteric and renal beds. Endotoxin administration increased whole body critical oxygen delivery (DO2crit) from 7.7 +/- 2.4 to 12.0 +/- 1.9 ml.kg-1.min-1 (P < 0.05), but U-74006F decreased DO2crit to 7.8 +/- 2.0 ml.kg-1.min-1 (P < 0.05 vs. endotoxin alone). Endotoxin decreased critical oxygen extraction ratio (O2ERcrit) from 75.0 +/- 12.7 to 44.3 +/- 8.7% (P < 0.05), but U-74006F increased O2ERcrit to 64.1 +/- 11.2% (P < 0.05 vs. endotoxin alone). U-74006F also decreased endotoxin-induced elevation of mesenteric and renal DO2crit and markedly increased regional O2ERcrit. Systemic and regional blood lactate concentrations were lower in the U-74006F-treated animals.(ABSTRACT TRUNCATED AT 250 WORDS)

Fluid volumes during onset of spontaneous hypertension in rats

1978 ◽  
Vol 235 (1) ◽  
pp. H52-H55 ◽  
Author(s):  
N. C. Trippodo ◽  
G. M. Walsh ◽  
E. D. Frohlich
Keyword(s):  
Extracellular Fluid ◽  
Dry Weight ◽  
Spontaneous Hypertension ◽  
Water Volume ◽  
Hypertensive Rats ◽  
Spontaneously Hypertensive ◽  
Reduced Body ◽  
Wet Weight ◽  
Wistar Kyoto ◽  
Total Body

Body fluid volumes were examined in young spontaneously hypertensive rats (SHR) and in two strains of age-matched normotensive controls to ascertain whether expanded plasma volume (PV) or extracellular fluid volume (ECFV) was associated with onset of spontaneous hypertension. Mean arterial pressure (MAP) was measured in conscious male SHR, Wistar-Kyoto normotensive (WKY), and American Wistar normotensive (NR) rats 3 h after arterial cannulation. At age 10-14 days no differences in MAP or PV (determine with 125I-albumin) were found between SHR and WKY. At age 18-43 days, SHR had elevated MAP and a small but significant elevation in total body water volume (TBWV; wet weight minus dry weight) compared to WKY and NR; no differences among the three groups were found in PV or ECFV (estimated with inulin). These results provide no evidence that expanded PV or ECFV plays a role in the pathogenic mechanisms of spontaneous hypertension, but do not exclude the possibility of altered vascular compliance. The slightly elevated TBWV in SHR may be related to reduced body fat in SHR.

scholarly journals Peculiarities of tissue water fractional composition in case of experimental whole-body hyperthermia

2015 ◽  
Vol 6 (2) ◽  
pp. 97-102
Author(s):  
O. V. Kuznetsova
Keyword(s):  
Relaxation Rate ◽  
Renal Cortex ◽  
Fractional Composition ◽  
Relaxation Times ◽  
Extracellular Fluid ◽  
Whole Body ◽  
T2 Relaxation ◽  
Tissue Water ◽  
Whole Body Hyperthermia ◽  
Group 2

The present study, using proton nuclear magnetic resonance relaxation (NMR) method, was undertaken to compare the water fractional composition in nature tissues (group 1) with those damaged by experimental whole-body hyperthermia (group 2). We measured longitudinal or “spin-lattice” (T1) and transverse or “spin-spin” (T2) relaxation times of protons of tissues (brain, the atria of the heart, the kidneys and the renal cortex) from adult Wistar rats. The differences in T1, T2 and percentage of the intra- and extracellular water between group 1 and 2 were studied to help understand how the water moves in tissues at hyperthermia. The results of this study and the literature data allow to make conclusions about tissue water fractional composition in case of experimental whole-body hyperthermia: (1) fractional composition of water and the distribution of intra- and extracellular fluid in the tissue of the atria of the heart did not change (T1 and T2 relaxation times remained unchanged); (2) the crystalline water fraction increased in brain (longer T1 relaxation rate and shorter T2 relaxation rate). This is obstructing the exchange of protons between free and bound water in brain. Thus, loss of water by brain cells is prevented. The distribution between intra- and extracellular fluid in brain remained unchanged; (3) fraction of free water increased in renal tissue (simultaneous longer T1 and T2 relaxation rates) by reducing the volume of extracellular fluid; (4) thick hydration layer of water (longer T1 relaxation rate, T2 remained unchanged) was formed in the extracellular fluid of renal cortex. This water layer is formed around the sodium ions which concentration is increased in renal cortex tissue of rats from group 2. Аs a result, the amount of fluid secreted by kidneys is reduced, i.e. there is a retention of water in the body. The relevance of our research for the understanding of high temperatures’ adaptation mechanisms is discussed in this paper. 

scholarly journals Long-term effect of full-body pulsed electromagnetic field and exercise protocol in the treatment of men with osteopenia or osteoporosis: A randomized placebo-controlled trial

F1000Research ◽  
2021 ◽  
Vol 10 ◽  
pp. 649
Author(s):  
Anwar Ebid ◽  
Mohamed El-boshy ◽  
Shamekh El-Shamy ◽  
Ali Thabet ◽  
Mohamed Abedalla ◽  
...  
Keyword(s):  
Type I Collagen ◽  
Bone Markers ◽  
Whole Body ◽  
Type I ◽  
Exercise Protocol ◽  
Group 3 ◽  
Group 2 ◽  
Pulsed Electromagnetic ◽  
Group 1 ◽  
Full Body

Background: Osteoporosis is the most prevalent metabolic disease affecting bones. Objective: To investigate the long-term effect of pulsed electromagnetic field (PEMF) combined with exercise protocol on bone mineral density (BMD) and bone markers in men with osteopenia or osteoporosis. Methods: Ninety-five males with osteopenia or osteoporosis (mean age, 51.26 ± 2.41 years; mean height, 176 ± 2.02 cm; mean weight, 83.08 ± 2.60 kg; mean body–mass index (BMI), 26.08 ± 1.09 kg/m2) participated in the study, and they were randomly assigned to one of three groups: Group 1 received a full-body PEMF and exercise protocol (PEMF +EX), Group 2 received a placebo full-body PEMF and exercise protocol (PPEMF +EX), and Group 3 received a full-body PEMF alone (PEMF). PEMF was applied for the whole body using a full-body mat three times per week for 12 weeks, with an exercise protocol that includes flexibility, aerobic exercise, strengthening, weight-bearing, and balance exercises followed by whole-body vibration (WBV) training. Outcome measures include BMD of total hip and lumbar spine and bone markers [serum osteocalcin (s-OC), Serum amino-terminal cross-linking telopeptide of type I collagen (s-NTX), Serum carboxy-terminal cross-linking telopeptide of type I collagen (s-CTX), Parathyroid hormones (PTH), Bone-specific Alkaline Phosphatase (BSAP), and 25-hydroxy vitamin D (Vit D)]. Results: The BMD of total hip and lumbar spine was significantly increased post-treatment in all groups, and more so in Group 1 and Group 2 than Group 3. There was a significant difference in bone markers in all groups, more so in Group 1 and Group 2 than in Group 3. Conclusion: PEMF combined with exercise protocol exerts a potent role for treating OP, is more effective than exercise and PEMF alone for increasing BMD and enhancing bone formation, and suppresses bone-resorption markers after 12-weeks of treatment with the impact lasting up to 6 months.

Tissue and whole-body extracellular, red blood cell and albumin spaces in the rainbow trout as a function of time: a reappraisal of the volume of the secondary circulation

1998 ◽  
Vol 201 (9) ◽  
pp. 1381-1391 ◽  
Author(s):  
P G Buschnell ◽  
D J Conklin ◽  
D W Duff ◽  
K R Olson
Keyword(s):  
Rainbow Trout ◽  
Blood Volume ◽  
Body Mass ◽  
Extracellular Fluid ◽  
Secondary Circulation ◽  
Whole Body ◽  
Secondary System ◽  
Tissue Mass ◽  
Tissue Samples ◽  
Rainbow Trout Oncorhynchus Mykiss

[58Co]EDTA, [51Cr]RBC and [125I]albumin spaces in the whole body and 28 tissue samples were examined at timed intervals over 16 h in rainbow trout Oncorhynchus mykiss. [58Co]EDTA space (which approximates extracellular fluid volume; ECF) in fins, skin, gallbladder and eye are reported for the first time. After a 16 h equilibration, ECF volume was large (376-726 microl g-1 wet tissue mass) in kidney, swimbladder, skin and fins, moderate (219-313 microl g-1 wet tissue mass) in stomach, skull, spleen, liver, intestine, gills, eye and cecum, and small (53-181 microl g-1 wet tissue mass) in red muscle, fat, brain, gallbladder and white muscle. Whole-body ECF was 387+/-10.6 microl g-1 (mean +/- s.e.m.; N=11). [51Cr]RBC space relative to [58Co]EDTA space was large in spleen, liver, intestine and gill, and low in skin, fins, stomach and skull. Whole-body [51Cr]RBC space was 9.9+/-0.6 microl g-1 body mass (N=17). Blood volume calculated from [51Cr]RBC space at 16 h and a dorsal aortic hematocrit of 24.5 % was 40.4 microl g-1 body mass. Whole-body [125I]albumin space at 16 h was 118.0+/-7.4 microl g-1 body mass (N=6), which resulted in an estimated blood volume of 156. 6 microl g-1 body mass, nearly four times that estimated from the [51Cr]RBC space. Tissue hematocrits, calculated from [125I]albumin and [51Cr]RBC spaces, were significantly lower than dorsal aortic hematocrit in all tissues except spleen, kidney and liver. [58Co]EDTA and [51Cr]RBC spaces reached equilibrium in nearly all tissues within 1 h, whereas [125I]albumin continued to accumulate in many tissues up 24 h. The disparity between [125I]albumin distribution kinetics compared with the kinetics of [58Co]EDTA and [51Cr]RBC distribution, as well as the accumulation of [125I]albumin in tissues not known to have a secondary circulation, indicates that [125I]albumin is a poor marker of plasma volume in trout and that previous studies based on [125I]albumin clearance from the plasma have overestimated both the volume and the turnover rate of the secondary system. Revised estimates of secondary circulation volume, based on [58Co]EDTA distribution rate, indicate that it is no more than 10-20 % of the volume of the primary circulation. &lt;P&gt;

Blood Volume, Intracellular and Extracellular Fluid Spaces in Normal Dogs and in Dogs With Ascites Secondary to Severe Tricuspid Insufficiency

1956 ◽  
Vol 184 (2) ◽  
pp. 282-286 ◽  
Author(s):  
Basdeo Balkissoon ◽  
Mitchell W. Spellman ◽  
Edward W. Hawthorne
Keyword(s):  
Blood Volume ◽  
Rose Bengal ◽  
Extracellular Fluid ◽  
Hepatic Function ◽  
Intracellular Space ◽  
Tricuspid Insufficiency ◽  
Rose Bengal Dye ◽  
Total Body ◽  
Surgically Induced ◽  
The Rose

Twenty-two normal and 12 dogs with ascites secondary to surgically induced isolated, total tricuspid insufficiency or a combination of tricuspid insufficiency with bilateral arteriovenous fistulae in the hind extremities were studied. In the ascitic animals: a) the blood volume, as determined by the use of rose bengal dye, increased secondary to an elevation in the plasma volume. b) The total body water, as measured by use of antipyrine, remained unchanged but the thiocyanate space increased and the calculated intracellular space was comparably diminished. c) The excretory hepatic function as evaluated by the rose bengal dye method was significantly depressed whereas the capacity of the liver to excrete bromsulfalein was not impaired. This investigation provides a basis for evaluating the influences of adrenalectomy among a similar group of ascitic dogs with tricuspid insufficiency.

scholarly journals Practical Aspects of Volume Control in Chronic Kidney Disease Using Whole Body Bioimpedance

2015 ◽  
Vol 39 (1-3) ◽  
pp. 32-36 ◽  
Author(s):  
Elizabeth L. Oei ◽  
Stanley L. Fan
Keyword(s):  
New Technologies ◽  
Fluid Management ◽  
Dry Weight ◽  
Residual Renal Function ◽  
Left Ventricular ◽  
Whole Body ◽  
Volume Control ◽  
Dialysis Patients ◽  
Additional Information ◽  
Total Body

Background: Fluid status is an independent predictor of mortality in dialysis patients. Current methods of fluid assessment have several limitations. Summary: An ideal method should be cheap, portable, easy to perform without extensive training, reproducible and determines patients' excess or deficit of total body water. Bioimpedance analysis (BIA) fulfils many of these criteria and can give additional information on fat and lean tissue composition. The accuracy and precision of BIA has been shown to be equivalent to the ‘gold standard' direct estimation techniques. Key Messages: Although there remains some concern about its validity in dialysis patients, fluid overload determined by BIA has been shown to predict mortality. BIA-guided fluid management appears superior to conventional fluid management in achieving clinically important outcomes such as reduction in blood pressure, left ventricular mass index, and arterial stiffness. Accurate setting of dry weight might also help preserve residual renal function by limiting episodes of dehydration. Nevertheless, as with all new technologies, there are issues that still need to be resolved. This will be achieved only with larger prospective interventional studies to explore its specific roles in dialysis cohorts.

scholarly journals Metabolically active portion of fat-free mass: a cellular body composition level modeling analysis

2007 ◽  
Vol 292 (1) ◽  
pp. E49-E53 ◽  
Author(s):  
ZiMian Wang ◽  
Stanley Heshka ◽  
Jack Wang ◽  
Dympna Gallagher ◽  
Paul Deurenberg ◽  
...  
Keyword(s):  
Water Distribution ◽  
Cell Mass ◽  
Extracellular Fluid ◽  
Multiple Linear Regression Model ◽  
Resting Energy Expenditure ◽  
Cellular Level ◽  
Fat Free Mass ◽  
Whole Body ◽  
Total Body

The proportion of fat-free mass (FFM) as body cell mass (BCM) is highly related to whole body resting energy expenditure. However, the magnitude of BCM/FFM may have been underestimated in previous studies. This is because Moore's equation [BCM (kg) = 0.00833 × total body potassium (in mmol)], which was used to predict BCM, underestimates BCM by ∼11%. The aims of the present study were to develop a theoretical BCM/FFM model at the cellular level and to explore the influences of sex, age, and adiposity on the BCM/FFM. Subjects were 112 adults who had the following measurements: total body water by2H2O or3H2O dilution; extracellular water by NaBr dilution; total body nitrogen by in vivo neutron activation analysis; and bone mineral by dual-energy X-ray absorptiometry. FFM was calculated using a multicomponent model and BCM as the difference between FFM and the sum of extracellular fluid and solids. The developed theoretical model revealed that the proportion of BCM to FFM is mainly determined by water distribution (i.e., E/I, the ratio of extracellular to intracellular water). A significant correlation ( r = 0.90, P < 0.001) was present between measured and model-predicted BCM/FFM for all subjects pooled. Measured BCM/FFM [mean (SD)] was 0.584 ± 0.041 and 0.529 ± 0.041 for adult men and women ( P < 0.001), respectively. A multiple linear regression model showed that there are independent significant associations of sex, age, and fat mass with BCM/FFM.

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