Lung–kidney system ↗Perfusion can fall
Low effective circulating volume, hypotension, sepsis, heart dysfunction, vascular changes, and medicines can reduce filtration pressure.
KIDNEYS / 10
Acute loss and chronic decline
interact.
AKI develops over hours to days and has many possible mechanisms. CKD is persistent damage or reduced function over time. Each raises vulnerability to the other.
Intrinsic tissue can be injured
Ischemia, toxins, inflammation, glomerular disease, vascular injury, or interstitial disease can damage different nephron structures.
Obstruction can raise tubular pressure
Blockage from stones, prostate disease, tumors, clots, or other causes can oppose filtration and injure kidneys.
Homeostatic outputs can fail quickly
Potassium, acid, fluid, nitrogenous wastes, and medication exposure can change even when some urine continues.
Recovery is cause-dependent
Removing the insult and supporting physiology may permit recovery, but residual damage and recurrent risk can remain.
Damage or reduced function persists
Diabetes, hypertension, immune, genetic, obstructive, toxic, vascular, and prior acute injuries are among many possible causes.
Remaining nephrons adapt
Single-nephron filtration and workload can rise as reserve falls, temporarily preserving function while altering long-term stress.
Albuminuria and eGFR show different dimensions
Urine albumin reflects damage risk while estimated filtration reflects function; trends and cause matter.
Systemic complications emerge unevenly
Pressure, fluid, potassium, acid–base, anemia, mineral-bone, cardiovascular, nutritional, and medication issues can appear.
Clearance and insulin metabolism change
Reduced renal elimination and insulin degradation can change exposure and hypoglycemia risk, requiring individualized medication review.