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Related Concept Videos

Acute Kidney Injury II: Pathophysiology01:29

Acute Kidney Injury II: Pathophysiology

Acute kidney injury (AKI) causes are categorized into three primary categories based on the location of the injury: prerenal, intrarenal (or intrinsic), and postrenal causes. This classification guides clinical management and illustrates how different pathways can impair kidney function.Etiology and Pathophysiology of Acute Kidney Injury1. Prerenal causesEtiology: Prerenal Acute Kidney Injury, the most common type, occurs when reduced blood flow to the kidneys decreases filtration capacity...
Antihypertensive Drugs: Direct Renin Inhibitors01:25

Antihypertensive Drugs: Direct Renin Inhibitors

The renin-angiotensin-aldosterone system (RAAS) is an intricate physiological pathway involving numerous enzymes and hormones, including renin, angiotensin-converting enzyme (ACE), angiotensin I and II, and aldosterone. Imbalances within this system increase the production of angiotensin II and aldosterone. Increased angiotensin II levels promote vasoconstriction and blood pressure elevation. Concurrently, higher aldosterone levels stimulate sodium and water reabsorption in the kidneys,...
Hormonal Regulation01:33

Hormonal Regulation

The renin-aldosterone system is an endocrine system which guides the renal absorption of water and electrolytes, thus managing blood pressure and osmoregulation. Activation of the system begins in the kidneys with a small cluster of cells adjacent to the afferent and efferent blood vessels of the renal corpuscle. As the nephrons are filtering blood, juxtaglomerular cells monitor blood pressure. If they detect a decrease in pressure, they release the hormone renin into the bloodstream.
Acute Kidney Injury IV: Diagnostic Studies and Prevention01:30

Acute Kidney Injury IV: Diagnostic Studies and Prevention

Accurate diagnosis and effective prevention are critical in managing Acute Kidney Injury (AKI), which is linked to high mortality rates ranging from 10% to 80%. Timely recognition of at-risk patients and careful monitoring can significantly reduce the likelihood of kidney damage.Diagnostic Assessments:The diagnostic process starts with a comprehensive medical history to identify prerenal, intrarenal, and postrenal causes.Prerenal causes, such as dehydration, hypotension, or blood loss, should...
Hypertension and Regulation of Blood Pressure01:18

Hypertension and Regulation of Blood Pressure

Hypertension, the most common cardiovascular disease, is diagnosed through repeated measurements of elevated blood pressure. Its risks, including damage to the kidney, heart, and brain, are directly proportional to blood pressure levels. Starting from 115/75 mm Hg, the risk of cardiovascular disease doubles with each increment of 20/10 mm Hg. The diagnosis relies on blood pressure measurements, not on patient symptoms, as hypertension is often asymptomatic until end-organ damage is imminent or...
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Antihypertensive Drugs: Angiotensin-Converting Enzyme Inhibitors

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Related Experiment Video

Updated: Jul 7, 2026

Improved Renal Denervation Mitigated Hypertension Induced by Angiotensin II Infusion
08:35

Improved Renal Denervation Mitigated Hypertension Induced by Angiotensin II Infusion

Published on: May 26, 2022

Intra-abdominal hypertension and the effect on renal function.

J J De Waele1, I De Laet

  • 1Intensive Care Unit, Ghent University Hospital, Gent, Belgium. jan.dewaele@UGent.be

Acta Clinica Belgica
|February 21, 2008
PubMed
Summary

Intra-abdominal hypertension (IAH) and abdominal compartment syndrome (ACS) harm critically-ill patients, particularly the kidneys. Elevated intra-abdominal pressure (IAP) impairs kidney function even before ACS develops, impacting renal blood flow and hormones.

Related Experiment Videos

Last Updated: Jul 7, 2026

Improved Renal Denervation Mitigated Hypertension Induced by Angiotensin II Infusion
08:35

Improved Renal Denervation Mitigated Hypertension Induced by Angiotensin II Infusion

Published on: May 26, 2022

Area of Science:

  • Critical care medicine
  • Nephrology
  • Surgical intensive care

Background:

  • Intra-abdominal hypertension (IAH) and abdominal compartment syndrome (ACS) are prevalent in critically-ill patients.
  • Both conditions are linked to increased mortality and organ dysfunction.
  • The kidney is particularly susceptible to elevated intra-abdominal pressure (IAP).

Purpose of the Study:

  • To review the mechanisms of renal dysfunction in IAH and ACS.
  • To highlight the vulnerability of the kidney to increased IAP.
  • To discuss the impact of IAP on renal function at various pressure levels.

Main Methods:

  • Review of existing animal and human studies.
  • Analysis of evidence on renal impairment mechanisms in IAH/ACS.
  • Synthesis of current understanding of IAP effects on renal physiology.

Main Results:

  • Adverse renal effects of elevated IAP can occur at lower pressure levels, preceding overt ACS.
  • Renal impairment in ACS is multifactorial, involving renal blood flow and hormonal changes.
  • The kidney's anatomical position and blood supply contribute to its vulnerability.

Conclusions:

  • IAH and ACS significantly impact renal function in critically-ill patients.
  • Understanding the mechanisms of renal impairment is crucial for timely intervention.
  • Early recognition of IAP effects on the kidney is vital for improving patient outcomes.