Renal System Flashcards
Renal System Contents
Kidney
Ureters
Artery, Veins, and Nerves
Renal System: Kidneys
2 Kidneys containing millions of nephrons
Filters and returns fluid to blood ~150-200 quarts/24 hours, ~1-2 quarts removed as urine
Removes waste and balances body fluids
Renal System: Ureters
Muscular tubes connecting kidneys to bladder
Renal System: Vascular and Nerve Supply
Renal Artery and Vein
Renal Plexus innervates
Metabolic Acidosis
Diabetic Ketoacidosis, Diarrhea, Renal Failure, Shock, Sepsis, Lactic Acidosis
Metabolic Acidosis S/S
Bicarbonate Deficit, Hyperventilation, Headache, Mental Dullness, Deep Respiration, Stupor, Coma, Hyperkalemia, Tachycardia, Cardiac Arrythmia
Respiratory Acidosis
Hypoventilation, Chest Trauma, Pulmonary Edema and CHF, COPD, or other Obstructive d/o’s obstructive sleep apnea
Respiratory Acidosis S/S
Headache, Visual Disturbance, Confusion, Dorwsiness, Tremor, Asterixis, Depressed Tendon Reflexes, Hyperkalemia
Metabolic Alkalosis
Loss of Gastric secretions, antacids, diuretics, or hypervolemia (too much fluid): CHF, Cirrhosis, Cushing’s
Metabolic Alkalosis S/S
Headaches, Lethargy, Tetany, Depressed Respirations, Mental Confusion, Dizziness, Seizure, Hypokalemia, Cardiac Arrhythmia
Respiratory Alkalosis
Hyperventilation due to anxiety, high altitude, pregnancy, fever, hypoxia, pneumonia, PE, sepsis, Liver Disease, Hyperthyroidism
Respiratory Alkalosis S/S
Hypocapnia, lightheaded, paresthesia, cramps, syncope, tetany, convulsions, hypokalemia, cardiac arrhythmia
Arterial Blood Gas
Examines the acid-base balance (pH), ventilation
(CO2, O2 levels)
Arterial Blood Gas: pH
Acid = <7.35
Normal = 7.35 - 7.45
Alkaline = >7.45
Arterial Blood Gas: PaCO2
Acid = >45
Normal = 35-45
Alkaline = <35
Arterial Blood Gas: HCO3
Acid = <22
Normal = 22-28
Alkaline = >28
6 Steps to ABG Analysis
- Is the pH normal
- Is the CO2 normal
- Is the HCO3 normal
- Match the CO2 or the HCO3 with the pH
- Does the CO2 or the HCO3 go the opposite direction of the pH?
Arterial Blood Gas: Respiratory System
Controls the PaCO2
If breathing is rapid = CO2 blown off
The blood becomes less acidic and pH increases
If breathing is ineffective = CO2 retained
The blood becomes more acidic
Arterial Blood Gas: Kidneys
Referred to as the metabolic system in the context of ABG measurement, controls the bicarbonate level
Arterial Blood Gas: Bicarbonate
Acts as a base
The Kidneys assist in the amount of HCO3 in the blood and extracellular fluid through increased production or reabsorption of these ions
Arterial Blood Gas: Urine
Kidneys regulate the pH by changing the amount of hydrogen ions in the urine
Metabolic Conditions
Metabolic Alkalosis:
pH UP & HCO3 UP
Metabolic Acidosis:
pH DOWN & HCO3 DOWN
Respiratory Conditions
Respiratory Alkalosis:
pH UP & PaCO2 DOWN
Respiratory Acidosis:
pH DOWN & PaCO2 UP
Kidney Disease
Kidney disease affects ~37 million
90% asymptomatic
Leading cause of death in the US