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Introduction:Acute Kidney Injury (AKI) describes a swift decrease in kidney function occurring over hours to days, characterized by the kidneys' failure to remove waste products from the bloodstream. This leads to dangerous complications like metabolic acidosis, fluid overload, and electrolyte imbalances, such as hyperkalemia, which can cause life-threatening arrhythmias. AKI is common in both hospital and outpatient settings, often triggered by dehydration, sepsis, or exposure to nephrotoxic...
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Acute Kidney Injury IV: Diagnostic Studies and Prevention01:30

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Acute Kidney Injury III: Clinical Manifestations01:29

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Acute Kidney Injury (AKI) progresses through distinct clinical phases: the oliguric, diuretic, and recovery phases, each marked by unique manifestations and challenges.Oliguric Phase:The oliguric phase is the initial stage of AKI, typically lasting 10 to 14 days. This phase is marked by a significant reduction in urine output, usually less than 400 mL per day, indicating decreased kidney function. Fluid retention is a prominent feature, leading to symptoms such as edema, hypertension, and...
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A Large Animal Model for Acute Kidney Injury by Temporary Bilateral Renal Artery Occlusion
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Elevated BP after AKI.

Chi-yuan Hsu1, Raymond K Hsu2, Jingrong Yang3

  • 1Departments of Medicine and Division of Research, Kaiser Permanente Northern California, Oakland, California; hsuchi@medicine.ucsf.edu.

Journal of the American Society of Nephrology : JASN
|July 3, 2015
PubMed
Summary
This summary is machine-generated.

Hospitalization-acquired Acute Kidney Injury (AKI) independently increases the risk of developing high blood pressure (BP) within two years post-discharge in adults. Preventing AKI may reduce future hypertension incidence.

Keywords:
BPacute renal failurehypertensionrisk factors

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Area of Science:

  • Nephrology
  • Cardiology
  • Public Health

Background:

  • The relationship between Acute Kidney Injury (AKI) and subsequent blood pressure (BP) elevation remains incompletely understood.
  • Previous studies have not definitively established whether AKI is an independent risk factor for developing hypertension post-hospitalization.

Purpose of the Study:

  • To investigate the independent association between hospital-acquired AKI and the development of elevated BP in previously normotensive adults within two years after discharge.
  • To assess the impact of AKI severity on the risk of subsequent BP elevation.

Main Methods:

  • Retrospective cohort study of 43,611 adult members of Kaiser Permanente Northern California hospitalized between 2008-2011.
  • AKI was identified based on serum creatinine changes during hospitalization; elevated BP was defined as documented readings >140/90 mmHg during outpatient visits.
  • Multivariable regression models were used to adjust for potential confounders and assess the independent association between AKI and elevated BP.

Main Results:

  • A total of 2451 patients experienced AKI during hospitalization.
  • AKI survivors showed a higher incidence of elevated BP compared to those without AKI (46.1% vs. 41.2% at 730 days, P<0.001).
  • AKI was independently associated with a 22% increased odds of developing elevated BP (95% CI, 12% to 33%), with increased odds correlating with AKI severity.

Conclusions:

  • Hospital-acquired AKI is an independent risk factor for the subsequent development of elevated blood pressure.
  • Preventing AKI during hospitalization could offer significant clinical and public health benefits by mitigating future hypertension.
  • These findings underscore the importance of AKI prevention strategies in hospital settings.