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Questions

Question 1

According to Table 31-4, which of the following conditions is associated with a normal anion gap (hyperchloremic) metabolic acidosis?

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Question 2

What is the primary mechanism of action for most clinically used diuretics?

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Question 3

How do osmotic diuretics like mannitol decrease water reabsorption?

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Question 4

Furosemide, a powerful loop diuretic, exerts its effect by blocking which transporter in the thick ascending loop of Henle?

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Question 5

Thiazide diuretics such as hydrochlorothiazide primarily inhibit sodium and chloride reabsorption in which part of the renal tubule?

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Question 6

What is a predictable disadvantage of using carbonic anhydrase inhibitors like acetazolamide as diuretics?

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Question 7

Spironolactone and eplerenone are classified as potassium-sparing diuretics because they block the effects of which hormone?

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Question 8

Acute Kidney Injury (AKI) resulting from severe hemorrhage and diminished blood volume is classified into which main category?

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Question 9

What is the most common cause of postrenal Acute Kidney Injury (AKI)?

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Question 10

Acute glomerulonephritis, a type of intrarenal AKI, is typically caused by what mechanism?

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Question 11

What is the most serious immediate physiological threat to patients with Acute Kidney Injury (AKI)?

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Question 12

Chronic Kidney Disease (CKD) is defined as the presence of kidney damage or decreased kidney function that persists for at least how long?

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Question 13

According to Table 32-5, what are the two leading causes of End-Stage Renal Disease (ESRD), accounting for more than 70 percent of all cases?

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Question 14

What is the primary cause of anemia in patients with severe Chronic Kidney Disease (CKD)?

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Question 15

The condition of isosthenuria in Chronic Kidney Disease (CKD) refers to the inability of the kidney to do what?

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Question 16

In the context of Chronic Kidney Disease (CKD), osteomalacia is caused by a combination of phosphate retention and decreased production of what substance?

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Question 17

What is the primary mechanism of amiloride and triamterene as potassium-sparing diuretics?

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Question 18

At what point does the number of functional nephrons typically have to fall below normal before serious clinical symptoms of Chronic Kidney Disease (CKD) appear?

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Question 19

What is the term for the condition in Chronic Kidney Disease where waste products like urea and creatinine accumulate in the blood?

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Question 20

According to Figure 32-3, by what approximate percentage does the number of functional glomeruli decrease by the age of 80?

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Question 21

What is the defining characteristic of nephrotic syndrome?

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Question 22

What is the primary reason that substances like creatinine accumulate in the body fluids in proportion to the number of destroyed nephrons in Chronic Kidney Disease (CKD)?

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Question 23

In a patient with a 75 percent loss of functional nephrons, how must each surviving nephron adapt to maintain sodium and volume balance according to Table 32-6?

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Question 24

Which specific tubular disorder is characterized by a failure of the kidneys to reabsorb glucose despite normal blood glucose levels?

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Question 25

What is the underlying genetic defect in Liddle syndrome?

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Question 26

In the context of dialysis, why is there no phosphate, urea, or creatinine in the dialyzing fluid?

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Question 27

What is the primary reason the effect of most diuretics on salt and water output subsides within a few days?

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Question 28

Uncontrolled diabetes mellitus can lead to polyuria because the excess filtered glucose acts as what type of diuretic?

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Question 29

What is the term for total cessation of urine output that can occur if renal blood flow is markedly reduced?

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Question 30

What is tubular necrosis, a cause of intrarenal acute renal failure?

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Question 31

In a patient with complete anuria from severe AKI, death will occur in approximately how many days unless kidney function is restored or dialysis is used?

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Question 32

What is the term for the 'vicious cycle' where an initial kidney injury leads to progressive deterioration and further nephron loss, ultimately terminating in end-stage renal disease (ESRD)?

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Question 33

What is the most important risk factor for the two main causes of ESRD, diabetes and hypertension?

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Question 34

The condition where bacterial infection of the renal interstitium and renal pelvis occurs, often originating from the lower urinary tract, is known as what?

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Question 35

According to the text, a child with minimal-change nephropathy can lose as much as 40 grams of plasma protein into the urine each day, leading to a fall in colloid osmotic pressure from a normal of 28 mm Hg to what level?

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Question 36

Why do patients with CKD develop uremia?

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Question 37

Which genetic disorder results in a failure of the kidneys to reabsorb phosphate, leading to a form of rickets that is refractory to vitamin D therapy?

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Question 38

Bartter syndrome is a rare kidney disorder caused by mutations that impair the function of which specific transporter?

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Question 39

What is the primary purpose of adding heparin to the blood during dialysis with an artificial kidney?

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Question 40

Under acute conditions, what is the maximum urine output that a loop diuretic can cause, relative to normal?

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Question 41

In a patient with Chronic Kidney Disease, how are plasma concentrations of sodium and chloride ions typically maintained even with severe decreases in GFR?

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Question 42

What is pyelonephritis primarily characterized by?

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Question 43

What is the primary mechanism through which loop diuretics impair the kidney's ability to concentrate urine?

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Question 44

In a case of acute renal failure due to tubular necrosis, what happens if the basement membrane of the tubule remains intact?

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Question 45

Which condition must be ruled out before diagnosing renal glycosuria, a relatively benign condition?

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Question 46

The total cardiac output is supplied to the kidneys by approximately what percentage?

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Question 47

In a patient with prerenal AKI, how far can renal blood flow fall below normal before the AKI is no longer easily reversible?

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Question 48

What is the primary mechanism of action of acetazolamide as a diuretic?

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Question 49

According to the text, what percentage of adults in the United States in 2018 were estimated to have chronic kidney disease?

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Question 50

Gitelman syndrome is an autosomal-recessive disorder of which specific transporter in the distal tubules?

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Other chapters

Functional Organization of the Human Body and Control of the “Internal Environment”The Cell and Its FunctionsGenetic Control of Protein Synthesis, Cell Function, and Cell ReproductionTransport of Substances Through Cell MembranesMembrane Potentials and Action PotentialsContraction of Skeletal MuscleExcitation of Skeletal Muscle: Neuromuscular Transmission and Excitation-Contraction CouplingExcitation and Contraction of Smooth MuscleCardiac Muscle; The Heart as a Pump and Function of the Heart ValvesRhythmical Excitation of the HeartThe Normal ElectrocardiogramCardiac Arrhythmias and Their Electrocardiographic InterpretationThe Circulation: Overview of the Circulation; Medical Physics of Pressure, Flow, and ResistanceVascular Distensibility and Functions of the Arterial and Venous SystemsThe Microcirculation and the Lymphatic System: Capillary Fluid Exchange, Interstitial Fluid, and Lymph FlowLocal and Humoral Control of Tissue Blood FlowNervous Regulation of the Circulation and Rapid Control of Arterial PressureCardiac Output, Venous Return, and Their RegulationMuscle Blood Flow and Cardiac Output During Exercise; the Coronary Circulation and Ischemic Heart DiseaseCardiac FailureCirculatory Shock and Its TreatmentThe Body Fluid Compartments: Extracellular and Intracellular Fluids; Interstitial Fluid and EdemaUrine Formation by the Kidneys: I. Glomerular Filtration, Renal Blood Flow, and Their ControlUrine Formation by the Kidneys: II. Tubular Reabsorption and SecretionRenal Regulation of Potassium, Calcium, Phosphate, and Magnesium; Integration of Renal Mechanisms for Control of Blood Volume and Extracellular Fluid VolumeRegulation of Acid-Base BalanceRed Blood Cells, Anemia, and PolycythemiaResistance of the Body to Infection: I. Leukocytes, Granulocytes, the Monocyte-Macrophage System, and InflammationResistance of the Body to Infection: II. Immunity and AllergyBlood Types; Transfusion; Tissue and Organ TransplantationHemostasis and Blood CoagulationPulmonary VentilationPrinciples of Gas Exchange; Diffusion of Oxygen and Carbon Dioxide Through the Respiratory MembraneTransport of Oxygen and Carbon Dioxide in Blood and Tissue FluidsRespiratory Insufficiency—Pathophysiology, Diagnosis, Oxygen TherapyPhysiology of Deep-Sea Diving and Other Hyperbaric ConditionsOrganization of the Nervous System, Basic Functions of Synapses, and NeurotransmittersSensory Receptors, Neuronal Circuits for Processing InformationThe Eye: I. Optics of VisionThe Eye: II. Receptor and Neural Function of the RetinaCortical and Brain Stem Control of Motor FunctionContributions of the Cerebellum and Basal Ganglia to Overall Motor ControlCerebral Cortex, Intellectual Functions of the Brain, Learning, and MemoryBehavioral and Motivational Mechanisms of the Brain—The Limbic System and the HypothalamusStates of Brain Activity—Sleep, Brain Waves, Epilepsy, PsychosesThe Autonomic Nervous System and the Adrenal MedullaCerebral Blood Flow, Cerebrospinal Fluid, and Brain MetabolismGeneral Principles of Gastrointestinal Function—Motility, Nervous Control, and Blood CirculationPropulsion and Mixing of Food in the Alimentary TractSecretory Functions of the Alimentary TractMetabolism of Carbohydrates and Formation of Adenosine TriphosphateLipid MetabolismProtein MetabolismThe Liver as an OrganDietary Balances; Regulation of Feeding; Obesity and Starvation; Vitamins and MineralsEnergetics and Metabolic RateBody Temperature Regulation and FeverIntroduction to EndocrinologyPituitary Hormones and Their Control by the HypothalamusThyroid Metabolic HormonesAdrenocortical HormonesInsulin, Glucagon, and Diabetes MellitusParathyroid Hormone, Calcitonin, Calcium and Phosphate Metabolism, Vitamin D, Bone, and Teeth