Ch. 25 Fluid and Electrolytes – Flashcards
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In one form of metabolic acidosis, a build up of fixed acids causes the concentration of bicarbonate ions to do what?
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fall
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Solutes can be divided into two categories: electrolytes and ________
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nonelectrolytes
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Match the components of the bicarbonate buffer system:
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weak acid --> H2CO3
weak base --> HCO3-
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Fluid balance is maintained by the work of several organ systems working together. Which of the following systems is involved in fluid balance?
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digestive, cardiovascular, and urinary
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Which are common electrolytes found in body fluids?
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Na+, Cl-, K+
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If an acid is added to a solution, the concentration of H+ will ________, and the pH will ________
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increase and decrease
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Most calcium comes from the diet and is lost in ________, _______, and _______
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urine, feces, and sweat
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Match each chemical buffer system with its location:
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Protein --> within cells and blood
phosphate --> within cells
bicarbonate --> within the blood
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Metabolic acids which are derived from metabolic wastes are more commonly referred to as ______ acids
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fixed
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Magnesium ions are predominantly found where in the body?
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bone and within cells
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The percentage of fluid in the body is dependent on the age of the individual and the relative amounts of _______ connective tissue and _______ muscle tissue
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adipose and skeletal
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Respiratory alkalosis occurs when PCO2 levels are ______ than normal
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lower
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A(n) ________ is any substances that dissociates in solution to form cations and anions
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electrolyte
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Match the components of the phosphate buffering system:
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weak acid --> dihydrogen phosphate
weak base --> hydrogen phosphate
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Hormones that play a major role in homeostatic regulation of both electrolytes and fluids include:
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antidiuretic hormone, angiotensin II, and aldosterone
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Which of the following are ways in which we lose fluid from the body?
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breathing, sweating, and urinating
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If an acid-base disturbance has occurred, which buffering systems are no longer capable of compensating for pH changes in the body?
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chemical
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Fluid sequestration differs from other fluid imbalances the total body fluid may be normal but it is distributed ___________
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abnormally
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Carbonic acid is a _______ acid
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vobitile
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The ECF has higher concentrations than the ICF of which of the following ions?
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Ca2+, Cl-, & Na+
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If your arterial blood pH drops below 7.35, you are said to be in a state of physiological ________
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acidosis
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________ occurs when bicarbonate ion levels are above normal
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metabolic alkalosis
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Patients with a COPD, such as chronic bronchitis, cannot fully exhale causing their CO2 levels to increase. Because of this they are often in a state of respiratory _______
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acidosis
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Imbalance in K+ levels in the plasma can lead to neuromuscular changes which can lead to _______ and respiratory arrest and death of the organism
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cardiac
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The water in the body produced from aerobic cellular respiration is referred to as _______ water
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metabolic
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Fluid imbalances can be organized into five categories including which of the following?
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dehydration, fluid sequestration, and hypotonic hydration
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Which of the following can serve as a protein buffer system?
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intracellular proteins, hemoglobin in RBCs, and plasma proteins
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An acid-base imbalance below 7.0 or above 7.7 will result in:
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death within a few hours
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______ is the most abundant electrolyte in bones and teeth
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calcium
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A chemical buffering system is composed of which of the following?
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weak base and weak acid
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All are correct statements about Cl- and its regulation except which one?
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Cl- regulation is completely independent of Na+
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The region of the brain that contains the thirst center is the:
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hypothalamus
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Extracellular fluid includes ________ fluid and ______ _______
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interstitial and blood plasma
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The physiological roles of phosphate include which of the following?
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component of phospholipids and with Ca2+, hardening of extracellular matrix
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Systemic arterial blood should have a pH between:
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7.35 and 7.45
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Metabolic acidosis occurs when aterial blood levels of:
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bicarbonate ion fall below normal
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An increase in which of the following would ultimately or directly result in a decrease in fluid output by the kidneys?
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ADH, aldosterone, and renin
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Insulin _______ blood K+ levels by stimulating ________ in cells
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decreases and Na< K pumps
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Sodium is lost from the body in the ______
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sweat, feces, and urine
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Renin is released by the _______ apparatus in the kidney
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juxtaglomerular
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Place the following events in order:
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1. lactic acid and level rise
2. blood pH drops
3. kidneys reabsrob HCO3
4. blood pH rises
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Hypovenilation leads to ______
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acidosis
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_______ water loss always occurs regardless of the hydration status of the organism
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obligatory
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Which organ is responsible for synthesizing ANP?
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heart
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Which of the following may cause metabolic alkalosis?
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overuse of diuretics, overuse of antacids, and vomiting
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Your father has chronic heart burn and is continually eating antacids as a result. This will ______ the pH of his blood
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increase
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Low levels of Na+ (below the normal physiological levels) is correctly identified as __________
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hypatremia
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Metabolic-induced acid-base disturbances are caused by:
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abnormal concentration of HCO3-
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Which of the following are sources of fixed acids in the body?
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absorption from the GI tract, metabolism of lipids, and metabolic production of lactic acid
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Inside the muscle cells calcium is stored in the _______ _______
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sarcoplasmic reticulum
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Antidiuretic hormone exerts its effects by which of the following?
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increasing water reabsorption in the kidney and increasing thirst in the hypothalamus
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In response to increased blood osmolarity, the osmoreceptors in the hypothalamus are stimulated to release more _______ hormone
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antidiuretic
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Only the ______ form of calcium is physiologically active
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ionized
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True or False: extracellular fluid contains more negatively charged proteins than the intracellular fluid
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false
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The anion is a common buffer in urine and an important intracellular buffer against pH changes
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phosphate
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Which of the following are examples of ways that fluid imbalances with changes in osmolarity can occur?
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water intoxication and profuse sweating
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___________ hormone (vasopressin), which is released from the posterior pituitary gland, increases water reabsorption in the kidneys thereby increasing blood volume and blood pressure
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antidiuretic
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True or False: most Americans consume meat and wheat which act to acidify the blood
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true
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Which of the following can cause respiratory acidosis?
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airway obstruction, pulmonary edema, and emphysema
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Which of the following can result in metabolic acidosis?
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severe diarrhea, increased anaerobic respiration, and excessive alcohol intake
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A ________ is a solute that does not dissociate in solution
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non-electrolyte
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Pleural ________ is the accumulation of fluid in the pleural cavity and is generally associated with lung infections
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effusion
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The normal level of K+ in the extracellular fluid is in the range of which option?
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3.5-5.0 mEq/L
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Which of the following can cause respiratory alkalosis?
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climbing a 14,000 ft peak, congestive heart failure, and hyperventilation
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If the Na+ concentration in the ECF increases due to dehydration then the ECF becomes __________
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hypertonic
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Because osmotic pressure depends on the number of solutes, Na Cl, which dissociates into Na+ and Cl-, exerts _______ osmotic pressure than glucose, which does not dissoicate
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more
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Water moves between fluid compartments by what process?
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osmosis
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Angiotensin II causes which of the following effects?
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vasoconstriction, increased thirst, and increased ADH secretion
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An increase in aldosterone levels results in the increased reabsoprtion of what ion?
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Na+
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ADH levels increase due to nerve stimulation from what type of receptors in the carotid arteries?
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baroreceptors
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A decreased glomerulus filtration rate will _______ blood angiotension II levels
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increase
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In the ECF, the blood _______ has a higher concentration of protein than the interstitial fluid
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plasma
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ADH secretion is stimulated by which of the following?
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high blood osmolarity and low blood pressure
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Your two year old brother throws a temper tantrum and holds his breath. This eventually will cause CO2 levels to _______ his blood pH to ______
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increase and decrease
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Fluid movement between compartments occurs because of changes to the relative _______
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osmolarity
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An increase in stretch of the adrenal cortex is stimulated by _______ blood pressure, and ______ Na+ plasma levels
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low and low
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Because they are smaller in size and unable to offload CO2 as effectively, babies are more prone to respiratory _______ than adults
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acidosis
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A decrease in Na+ concentration in the ECF due to low salt diet would result in which of the following options?
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decreased blood volume levels and decreased blood pressure
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Patients with diabetes mellitus often suffer from a pH imbalance known as ________ due to the breakdown of lipids instead of carbohydrates
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ketoacidosis
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ANP exerts its physiological effects in which of the following ways?
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decreasing renin release and decreasing vasoconstriction inperipheral blood vessels
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A baby that has chronic severe diarrhea may develop metabolic _______
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acidosis
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Renal compensation _______ blood bicarbonate levels
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increases or decreases
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Your baby has had severe diarrhea for days and is going into metabolic acidosis. Her respiratory system will attempt to compensate by _______ the respiratory rate
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increasing
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All of the following options are physiological roles of calcium except?
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establishing the resting membrane potential
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The respiratory system can compensate for metabolic acidosis or alkalosis by:
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changing the respiratory rate
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An increase in ANP in the body causes a(n) ______ loss of Na+ ions in the urine
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increased