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Hepatic Hemodynamics in Portal Hypertension

2005· book-chapter· en· W88375361 on OpenAlexaff
W. Wayne Lautt, Zhi Ming

Bibliographic record

VenueHumana Press eBooks · 2005
Typebook-chapter
Languageen
FieldMedicine
TopicLiver Disease and Transplantation
Canadian institutionsUniversity of Manitoba
Fundersnot available
KeywordsPortal hypertensionMedicineHemodynamicsBlood flowVasoconstrictionHomeostasisHyperdynamic circulationPortal venous pressureCirrhosisCardiologyInternal medicine

Abstract

fetched live from OpenAlex

This chapter will discuss some consequences of the hepatic hemodynamic disturbances that accompany portal hypertension. Fibrosis or other mechanisms that lead to a restriction of blood flow through the liver have enormous consequences to the entire cardiovascular system, endocrine processing system, and metabolic homeostasis in general. Many systems have evolved to compensate for the disturbances that result from portal hypertension but some regulatory systems result in a worsening of homeostasis as a result of confusion at the afferent end of the signaling process. For example, does the liver respond to a decrease in portal blood flow the same if the decrease is caused by vasoconstriction of the superior mesenteric artery and subsequent reduction in intestinal blood flow as it does if blood flow to the hepatic parenchymal cells is reduced because of portacaval shunt formation? This chapter represents a conceptual focus on our own areas of expertise with no attempt to provide a detailed literature review. Although the references arc few, more detailed references are available in the cited reviews and original articles. The approach taken is to evaluate the effects of increases and decreases in intra-hepatic portal flow on four vital hepatic areas: the hepatic blood reservoir, hepatic arterial blood flow, the hepatorenal reflex, and liver cell mass.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Theoretical or conceptual · Consensus signal: none
GenreCandidate signal: Other · Consensus signal: Other
Teacher disagreement score0.721
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.045
GPT teacher head0.250
Teacher spread0.205 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

Study designTheoretical or conceptual
Domainnot available
GenreOther

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations2
Published2005
Admission routes1
Has abstractyes

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