For a patient experiencing metabolic acidosis, the body will compensate by:
Hyperventilating
Water movement between the ICF and ECF compartments is determined by:
Osmotic forces
Which patient should the FNP assess for both hyperkalemia and metabolic
acidosis?
Renal failure
Why are infants susceptible to significant losses in total body water (TBW)?
Because infant kidneys are not mature enough to count the fluid losses
When thirst is experienced, how are Osmoreceptors activated?
By an increase in the osmotic pressure of the plasma
Thirst is experienced when water loss equals 2% of an individual's body weight or
when there is an increase in osmolality. Dry mouth, hyperosmolality, and plasma
volume depletion activate Osmoreceptors (neurons located in the hypothalamus are
stimulated by increased osmolality)
What is the major determinant of the resting membrane potential necessary for
transmission of nerve impulses?
The ratio between intracellular K+ and extracellular K+
The ratio of K + in the ICF to K + in the ECF is the major determinant as a resting
membrane potential, which is necessary for the transmission and conduction of
nerve impulses, maintenance of normal cardiac rhythms, and skeletal and smooth
muscle contraction
Physiologic pH is maintained around 7.4 because bicarbonate (HCO3)and carbonic
acid (H2CO3)exist in a ratio of
20:1
What are indications of dehydration?
Tachycardia and weight loss
Marked water deficit is manifested by symptoms of dehydration: headache, thirst,
dry skin and mucous membranes, elevated temperature, weight loss, and decreased
or concentrated urine (with the exception of diabetes insipidus ).Skin turgor may
be normal or decreased. Symptoms of hypovolemia , including tachycardia, with
pulses, and postural hypotension May be present
Chvostek sign and Trousseau sign indicate
Hypocalcemia
How does the loss of chloride doing vomiting cause metabolic alkalosis?
Loss of chloride causes retention of bicarbonate to maintain the anion balance
When acid losses caused by vomiting with depletion of ECF and chloride, renal
compensation is not very effective because the volume depletion and lots of
electrolytes simulate a paradoxical response by the kidneys. The kidneys increase
sodium and bicarbonate reabsorption with excretion of hydrogen. Bicarbonate is
ribs are up to maintain an anionic balance because the ECF chloride concentration
is decreased
In ARDS, alveoli and respiratory bronchioles fill with fluid as a result of the:
activation of surfactant in the impairment of type two alveolar cells
Lung formation and injury damages the alveolar epithelium and the vascular
endothelium. Surfactant is an activated, and it's production by type II alveolar cells
is impaired as alveoli and respiratory bronchioles fill with fluid or collapse
Which plural abnormality involves the site of Plearle ruptured that act as a oneway valve, permitting air to enter on inspiration by preventing its
escape by closing during expiration?
Tension pneumothorax
Tension pneumothorax, this site of pleural rupture acts as a one-way valve,
permitting air to enter on inspiration but preventing its escape by closing up during
expiration. As more and more air enters the plural space, air pressure in the
pneumothorax begins to exceed barometric pressure
Kussmaul respirations May be characterized as a respiratory pattern:
With a slightly increased ventilatory rate, large tidal volumes, and no expiratory
pause
Pulmonary Edema usually begins at a pulmonary capillary wedge pressure or left
atrial pressure of _________ mm Hg
20 mm Hg
_____________ Is a fulminant form of respiratory failure characterized by acute
lung inflammation and diffuse alveocapillary injury
Acute respiratory distress syndrome
ARDS
Dyspnea is not a result of
Decreased blood flow to the medulla oblongata
High-altitude may produce hypoxemia through
Decreased inspired oxygen
The first factors the presence of adequate oxygen content of the inspired air
Oxygen content is lessened at high altitude's
Clinical manifestations that include unexplained weight loss, dyspnea on exertion,
use of accessory muscles, and tachypnea with prolonged expiration are indicative
of:
Emphysema
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