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Hypocapnia: Quiz


Question 1: Deliberate hyperventilation has been unwisely used by underwater breath-hold divers to extend dive time but at the risk of ________, which is a significant cause of drowning.
RebreatherDecompression sicknessShallow water blackoutOxygen toxicity

Question 2: ________, which is often associated with hypocapnia
AgoraphobiaHyperventilation syndromeMyocardial infarctionPanic attack

Question 3: ________, increased level of carbon dioxide
HypercapniaHypoventilationICD-10 Chapter XVIII: Symptoms, signs and abnormal clinical and laboratory findingsPleurisy

Question 4: Self-induced hypocapnia through hyperventilation is the basis for the deadly schoolyard ________.
Syncope (medicine)Shallow water blackoutFainting gameCarotid sinus

Question 5: ________, therapy treating asthma and other disorders by reducing hypocapnia
Hyperventilation syndromeCerebrospinal fluidButeyko methodCarbon dioxide

Question 6: [1] However, hypocapnia causes cerebral vasoconstriction, leading to ________ and this can cause transient dizziness, visual disturbances, and anxiety.
Transient ischemic attackCerebral hypoxiaVascular diseaseCerebrovascular disease

Question 7: Hypocapnia or hypocapnea also known as hypocarbia, sometimes incorrectly called acapnia, is a state of reduced carbon dioxide in the ________.
PlateletBlood plasmaRed blood cellBlood

Question 8: Because the ________ regulates breathing by monitoring the level of blood CO2, hypocapnia can suppress breathing to the point of blackout from cerebral hypoxia.
White matterBrainstemHuman brainGrey matter

Question 9: A low ________ of carbon dioxide in the blood also causes alkalosis (because CO2 is acidic in solution), leading to lowered plasma calcium ions and nerve and muscle excitability.
NitrogenPartial pressureChemistryVapor pressure

Question 10: Hypocapnia is sometimes induced in the treatment of medical emergencies such as intracranial hypertension and ________.
Renal tubular acidosisHyperkalemiaDiabetic ketoacidosisHypokalemia


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