Titre : Mesure du volume sanguin

Mesure du volume sanguin : Questions médicales fréquentes

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volume sanguin", "description": "Comment mesure-t-on le volume sanguin ?\nQuels tests sont utilisés pour évaluer le volume sanguin ?\nQuand faut-il mesurer le volume sanguin ?\nLe volume sanguin est-il constant ?\nQuels indicateurs sont liés au volume sanguin ?", "url": "https://questionsmedicales.fr/mesh/D001811?page=5#section-diagnostic" }, { "@type": "MedicalWebPage", "name": "Symptômes", "headline": "Symptômes sur Mesure du volume sanguin", "description": "Quels symptômes indiquent un volume sanguin faible ?\nComment un volume sanguin élevé se manifeste-t-il ?\nLe volume sanguin affecte-t-il la respiration ?\nQuels signes indiquent une déshydratation ?\nPeut-on détecter des anomalies par des tests sanguins ?", "url": "https://questionsmedicales.fr/mesh/D001811?page=5#section-symptômes" }, { "@type": "MedicalWebPage", "name": "Prévention", "headline": "Prévention sur Mesure du volume sanguin", "description": "Comment prévenir un volume sanguin anormal ?\nLe suivi médical est-il important ?\nQuels modes de vie favorisent un bon volume sanguin ?\nLes maladies chroniques affectent-elles le volume sanguin ?\nLes examens réguliers sont-ils nécessaires ?", "url": "https://questionsmedicales.fr/mesh/D001811?page=5#section-prévention" }, { "@type": "MedicalWebPage", "name": "Traitements", "headline": "Traitements sur Mesure du volume sanguin", "description": "Comment traiter un volume sanguin faible ?\nQuelles sont les options pour un volume sanguin élevé ?\nLes médicaments affectent-ils le volume sanguin ?\nComment la nutrition impacte-t-elle le volume sanguin ?\nLes traitements varient-ils selon l'âge ?", "url": "https://questionsmedicales.fr/mesh/D001811?page=5#section-traitements" }, { "@type": "MedicalWebPage", "name": "Complications", "headline": "Complications sur Mesure du volume sanguin", "description": "Quelles complications peuvent survenir avec un volume sanguin faible ?\nUn volume sanguin élevé peut-il causer des problèmes ?\nComment le volume sanguin affecte-t-il la circulation ?\nLes complications sont-elles réversibles ?\nQuels sont les risques d'une transfusion sanguine ?", "url": "https://questionsmedicales.fr/mesh/D001811?page=5#section-complications" }, { "@type": "MedicalWebPage", "name": "Facteurs de risque", "headline": "Facteurs de risque sur Mesure du volume sanguin", "description": "Quels facteurs augmentent le risque d'hypovolémie ?\nLes personnes âgées sont-elles à risque ?\nLe sexe influence-t-il le volume sanguin ?\nLes maladies chroniques augmentent-elles le risque ?\nL'alimentation joue-t-elle un rôle ?", "url": "https://questionsmedicales.fr/mesh/D001811?page=5#section-facteurs de risque" } ] }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Comment mesure-t-on le volume sanguin ?", "position": 1, "acceptedAnswer": { "@type": "Answer", "text": "Le volume sanguin peut être mesuré par des méthodes comme la dilution isotopique ou la photopléthysmographie." } }, { "@type": "Question", "name": "Quels tests sont utilisés pour évaluer le volume sanguin ?", "position": 2, "acceptedAnswer": { "@type": "Answer", "text": "Des tests comme la mesure du volume plasmatique et des marqueurs de dilution sont couramment utilisés." } }, { "@type": "Question", "name": "Quand faut-il mesurer le volume sanguin ?", "position": 3, "acceptedAnswer": { "@type": "Answer", "text": "Il est mesuré lors de conditions comme le choc hypovolémique ou les maladies cardiaques." } }, { "@type": "Question", "name": "Le volume sanguin est-il constant ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "Non, il varie selon l'âge, le sexe, l'état de santé et l'hydratation." } }, { "@type": "Question", "name": "Quels indicateurs sont liés au volume sanguin ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "Des indicateurs comme l'hématocrite et l'hémoglobine peuvent refléter le volume sanguin." } }, { "@type": "Question", "name": "Quels symptômes indiquent un volume sanguin faible ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Des symptômes incluent la fatigue, des étourdissements, et une pâleur de la peau." } }, { "@type": "Question", "name": "Comment un volume sanguin élevé se manifeste-t-il ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "Un volume sanguin élevé peut causer une hypertension, des maux de tête et des nausées." } }, { "@type": "Question", "name": "Le volume sanguin affecte-t-il la respiration ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "Oui, un volume sanguin anormal peut entraîner des difficultés respiratoires." } }, { "@type": "Question", "name": "Quels signes indiquent une déshydratation ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Des signes incluent la soif intense, la sécheresse de la peau et une urine foncée." } }, { "@type": "Question", "name": "Peut-on détecter des anomalies par des tests sanguins ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des tests sanguins peuvent révéler des anomalies du volume sanguin et des électrolytes." } }, { "@type": "Question", "name": "Comment prévenir un volume sanguin anormal ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "Maintenir une bonne hydratation et une alimentation équilibrée aide à prévenir les anomalies." } }, { "@type": "Question", "name": "Le suivi médical est-il important ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des contrôles réguliers peuvent aider à détecter des problèmes de volume sanguin tôt." } }, { "@type": "Question", "name": "Quels modes de vie favorisent un bon volume sanguin ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "Un mode de vie actif, une alimentation saine et une hydratation adéquate favorisent un bon volume sanguin." } }, { "@type": "Question", "name": "Les maladies chroniques affectent-elles le volume sanguin ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des maladies comme le diabète ou les maladies cardiaques peuvent influencer le volume sanguin." } }, { "@type": "Question", "name": "Les examens réguliers sont-ils nécessaires ?", "position": 15, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des examens réguliers aident à surveiller le volume sanguin et à prévenir des complications." } }, { "@type": "Question", "name": "Comment traiter un volume sanguin faible ?", "position": 16, "acceptedAnswer": { "@type": "Answer", "text": "Le traitement peut inclure des transfusions sanguines et des fluides intraveineux." } }, { "@type": "Question", "name": "Quelles sont les options pour un volume sanguin élevé ?", "position": 17, "acceptedAnswer": { "@type": "Answer", "text": "Le traitement peut inclure des diurétiques et des modifications du régime alimentaire." } }, { "@type": "Question", "name": "Les médicaments affectent-ils le volume sanguin ?", "position": 18, "acceptedAnswer": { "@type": "Answer", "text": "Oui, certains médicaments comme les antihypertenseurs peuvent influencer le volume sanguin." } }, { "@type": "Question", "name": "Comment la nutrition impacte-t-elle le volume sanguin ?", "position": 19, "acceptedAnswer": { "@type": "Answer", "text": "Une alimentation équilibrée aide à maintenir un volume sanguin adéquat et une bonne hydratation." } }, { "@type": "Question", "name": "Les traitements varient-ils selon l'âge ?", "position": 20, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les traitements peuvent différer selon l'âge et les conditions médicales sous-jacentes." } }, { "@type": "Question", "name": "Quelles complications peuvent survenir avec un volume sanguin faible ?", "position": 21, "acceptedAnswer": { "@type": "Answer", "text": "Des complications incluent le choc hypovolémique, l'insuffisance organique et la mort." } }, { "@type": "Question", "name": "Un volume sanguin élevé peut-il causer des problèmes ?", "position": 22, "acceptedAnswer": { "@type": "Answer", "text": "Oui, il peut entraîner des complications comme l'hypertension et des maladies cardiaques." } }, { "@type": "Question", "name": "Comment le volume sanguin affecte-t-il la circulation ?", "position": 23, "acceptedAnswer": { "@type": "Answer", "text": "Un volume sanguin anormal peut perturber la circulation sanguine et causer des douleurs." } }, { "@type": "Question", "name": "Les complications sont-elles réversibles ?", "position": 24, "acceptedAnswer": { "@type": "Answer", "text": "Certaines complications peuvent être réversibles avec un traitement approprié et rapide." } }, { "@type": "Question", "name": "Quels sont les risques d'une transfusion sanguine ?", "position": 25, "acceptedAnswer": { "@type": "Answer", "text": "Les risques incluent des réactions allergiques, des infections et des erreurs de compatibilité." } }, { "@type": "Question", "name": "Quels facteurs augmentent le risque d'hypovolémie ?", "position": 26, "acceptedAnswer": { "@type": "Answer", "text": "Des facteurs incluent la déshydratation, les saignements importants et certaines maladies." } }, { "@type": "Question", "name": "Les personnes âgées sont-elles à risque ?", "position": 27, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les personnes âgées sont plus susceptibles de souffrir de variations du volume sanguin." } }, { "@type": "Question", "name": "Le sexe influence-t-il le volume sanguin ?", "position": 28, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les hommes ont généralement un volume sanguin plus élevé que les femmes en moyenne." } }, { "@type": "Question", "name": "Les maladies chroniques augmentent-elles le risque ?", "position": 29, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des maladies comme le diabète et les maladies cardiaques peuvent augmenter le risque." } }, { "@type": "Question", "name": "L'alimentation joue-t-elle un rôle ?", "position": 30, "acceptedAnswer": { "@type": "Answer", "text": "Oui, une mauvaise alimentation peut affecter le volume sanguin et la santé globale." } } ] } ] }

Sources (10000 au total)

The effect of time-delayed contrast-enhanced scanning in determining the gross tumor target volume in large-volume brain metastases.

To assess the variation in large-volume brain metastases (BMs) boundaries and shapes using enhanced magnetic resonance (MR) scanning with different delay times and to provide a basis for determining t... We prospectively enrolled 155 patients initially diagnosed with BMs (561 lesions >1 cm). Contrast-enhanced (CE) T1-weighted imaging scans were performed 1, 3, 5, 10, 18, and 20 min after gadolinium-ba... GTV... Enhanced MR scans with different delay times show significant differences in the boundaries and shapes of large-volume BMs, and time-delayed multi-phase CE scanning should be used in GTV determination...

The effect of hepatic steatosis on liver volume determined by proton density fat fraction and deep learning-measured liver volume.

We aimed to evaluate the effect of hepatic steatosis (HS) on liver volume and to develop a formula to estimate lean liver volume correcting the HS effect.... This retrospective study included healthy adult liver donors who underwent gadoxetic acid-enhanced MRI and proton density fat fraction (PDFF) measurement from 2015 to 2019. The degree of HS was graded... The study population included 1038 donors (mean age, 31 ± 9 years; 689 men). Mean liver volume to SLV ratio increased according to PDFF grades (ρ = 0.234, p < 0.001). The multivariable analysis indica... HS increases liver volume. The formula to estimate lean liver volume may be useful to adjust for the effect of HS on liver volume.... • Hepatic steatosis increases liver volume. • The presented formula to estimate lean liver volume using MRI-measured proton density fat fraction and liver volume may be useful to adjust for the effect...

Point-of-Care Verification of Blood Culture Volume in Neonates: A Feasibility Trial.

Blood cultures remain the gold standard for the diagnosis of sepsis. However, volumes of blood submitted for cultures often do not match the recommended values. We propose a simple intervention aimed ... This study was conducted at a neonatal department in Warsaw, Poland, over a period of eight months (May to December 2020). Before starting the study, we undertook an educational intervention focused o... During the study period, 244 blood samples were collected for culture, out of which 205 samples were weighed (84.0%, CI... The point-of-care verification of blood culture volume using a scale was feasible to implement. Since we have met our pre-established criterion for success, a future, definitive trial is likely to pro...

Validation of a clinically applicable device for fast and accurate quantification of blood volume.

Determination of blood volume (BV) using the dual-isotope (e.g.,... We investigated the reliability and accuracy of a semi-automated CO-rebreathing device by comparing it against the dual-isotope methodology and its ability to detect a known blood removal. In study A,... A good correlation was observed between both the CO-rebreathing protocols (r... This study emphasizes that the semi-automated device accurately determines small changes (i.e., 2%) in BV and that a high correlation with the dual-isotope methodology exists. The findings are clinica...

Low Volume Blood Product Transfusion Patterns And Ratios After Injury.

The benefit of a balanced resuscitation in low volume transfusions remains unclear This study is aimed at characterizing blood product ratios in this cohort.... A retrospective analysis (2017-2019) of the ACS TQIP was performed to identify adult trauma patients who received ≥1 unit of packed red blood cells (pRBCs) 4 and 24 h after admission. Blood products r... Plasma and platelet ratios were closer to the target 1:1 ratio for ≤4 units pRBCs. Plasma and platelet ratios increased for those receiving ≤10 units pRBCs, demonstrating increasingly unbalanced resus... Transfusion ratios were closer to the desired transfusion ratio for low volume blood product resuscitation. In those receiving ≥5 units pRBC, plasma and platelet ratios were not balanced. The optimal ...

Atherosclerosis and Hippocampal Volumes in Older Adults: The Role of Age and Blood Pressure.

Lower hippocampal volume is associated with late-life cognitive decline and is an important, but nonspecific marker for clinical Alzheimer's dementia. Cerebrovascular disease may also be associated wi... Data came from 765 community-based older people (91 years old on average at death; 72% women), from 2 ongoing clinical-pathologic cohort studies. Participants completed baseline assessment, annual sta... Atherosclerosis severity is associated with lower hippocampal volume, independent of neurodegenerative and other cerebrovascular pathologies. Higher systolic blood pressures and advanced age attenuate...

Age-Related Changes in Blood Volume Pulse Wave at Fingers and Ears.

The decline in vascular elasticity with aging can be manifested in the shape of pulse wave. The study investigated the pulse wave features that are sensitive to age and the pattern of these features c... Five features were proposed and extracted from the photoplethysmography (PPG)-based pulse wave or its first derivative wave. The correlation between these PPG features and ages was studied in 100 heal... The proposed PPG features obtained from the finger showed a strong and significant correlation with age (with r = 0.76 - 0.77, p < 0.01), indicating higher sensitivity to age changes compared to the P... The proposed PPG features showed a high correlation with chronological age in healthy subjects and exhibited a similar age-related change trend as PWV.... With the convenience of PPG measures, the proposed age-related features have the potential to be used as biomarkers for vascular aging and estimating the risk of cardiovascular disease....