CHT EXAM SCRIPT 2026 FULL QUESTIONS
AND CORRECT ANSWERS ALREADY PASSED
◉ Bert. Answer: Father of pressure physiology
◉ 1906. Answer: Haldane - staged decompression tables
◉ 1937. Answer: Benke - O2 tolerance limits
◉ 1932. Answer: Behnke - lethal air embolism from shallow ascent
◉ 1960. Answer: Compression therapy for sever altitude dives
◉ 1967. Answer: UMS
◉ 1986. Answer: UHMS
◉ 1889. Answer: Compression therapy for caisson workers
◉ 1841. Answer: M Triger 1st caisson used in France for coal mining
,◉ M Triger. Answer: Describes pain /paralysis and relief from
recompression
◉ Brooklyn bridge. Answer: 110 dcs/2 fatal
◉ 1878. Answer: P Bert - caissons disease
Bubble theory of dcs
Oxygen toxicity
◉ Hudson river. Answer: 1st recompression chamber in USA
◉ 1690. Answer: 1st diving bell E Hadley
◉ 1825. Answer: W James - 1st SCUBA
◉ 1662. Answer: N Henshaw - domicilum
◉ P Bert. Answer: High altitude hypoxia
dcs
Oxygen toxicity
,◉ 1928. Answer: H Timkin - hyperbaric hotel
◉ Churchill-Davidson. Answer: Acrylic port for radiation therapy
◉ Boyle's Law. Answer: PV=PV
◉ Charles' Law. Answer: V/T=V/T
◉ Gay-Lussac's Law. Answer: P/T=P/T
◉ General Gas Law. Answer: PV/T=PV/T
◉ Henry's Law. Answer: as pressure increases, the gas in liquids
increases, and as temperature increases, the gas in liquids decreases
◉ 1960. Answer: Boerema - life without blood removed blood cells
from pigs
◉ Rapture of the Deep. Answer: Nitrogen Narcosis
◉ Nitrogen Narcosis. Answer: Breathing in an increases partial pressure
of nitrogen above 2000mmHg
, ◉ Central nervous system oxygen toxicity. Answer: Seizure caused by
breathing an increased partial pressure of oxygen
◉ Dalton's Law. Answer: in a mixture of non-reacting gasses, the total
pressure exerted is equal to the sum of the partial pressures of the
individual gases.
◉ Pascal's Law. Answer: pressure exerted anywhere in a confined
incompressible fluid is transmitted equally in all directions throughout
the fluid such that the pressure variations (initial differences) remain the
same
◉ Graham's Law. Answer: the rate of effusion or of diffusion of a gas is
inversely proportional to the square root of its molecular weight.
◉ Inspired pO2. Answer: =pTotal x fiO2
◉ Alveolar pO2. Answer: [(pTotal-pH2O) x fiO2]-pCO2
◉ pH2O. Answer: 47mmHg (water vapor produced in lung)
◉ pCO2. Answer: 50mmHg produced by lung breathing air
40mmHg produced by lung breathing oxygen
AND CORRECT ANSWERS ALREADY PASSED
◉ Bert. Answer: Father of pressure physiology
◉ 1906. Answer: Haldane - staged decompression tables
◉ 1937. Answer: Benke - O2 tolerance limits
◉ 1932. Answer: Behnke - lethal air embolism from shallow ascent
◉ 1960. Answer: Compression therapy for sever altitude dives
◉ 1967. Answer: UMS
◉ 1986. Answer: UHMS
◉ 1889. Answer: Compression therapy for caisson workers
◉ 1841. Answer: M Triger 1st caisson used in France for coal mining
,◉ M Triger. Answer: Describes pain /paralysis and relief from
recompression
◉ Brooklyn bridge. Answer: 110 dcs/2 fatal
◉ 1878. Answer: P Bert - caissons disease
Bubble theory of dcs
Oxygen toxicity
◉ Hudson river. Answer: 1st recompression chamber in USA
◉ 1690. Answer: 1st diving bell E Hadley
◉ 1825. Answer: W James - 1st SCUBA
◉ 1662. Answer: N Henshaw - domicilum
◉ P Bert. Answer: High altitude hypoxia
dcs
Oxygen toxicity
,◉ 1928. Answer: H Timkin - hyperbaric hotel
◉ Churchill-Davidson. Answer: Acrylic port for radiation therapy
◉ Boyle's Law. Answer: PV=PV
◉ Charles' Law. Answer: V/T=V/T
◉ Gay-Lussac's Law. Answer: P/T=P/T
◉ General Gas Law. Answer: PV/T=PV/T
◉ Henry's Law. Answer: as pressure increases, the gas in liquids
increases, and as temperature increases, the gas in liquids decreases
◉ 1960. Answer: Boerema - life without blood removed blood cells
from pigs
◉ Rapture of the Deep. Answer: Nitrogen Narcosis
◉ Nitrogen Narcosis. Answer: Breathing in an increases partial pressure
of nitrogen above 2000mmHg
, ◉ Central nervous system oxygen toxicity. Answer: Seizure caused by
breathing an increased partial pressure of oxygen
◉ Dalton's Law. Answer: in a mixture of non-reacting gasses, the total
pressure exerted is equal to the sum of the partial pressures of the
individual gases.
◉ Pascal's Law. Answer: pressure exerted anywhere in a confined
incompressible fluid is transmitted equally in all directions throughout
the fluid such that the pressure variations (initial differences) remain the
same
◉ Graham's Law. Answer: the rate of effusion or of diffusion of a gas is
inversely proportional to the square root of its molecular weight.
◉ Inspired pO2. Answer: =pTotal x fiO2
◉ Alveolar pO2. Answer: [(pTotal-pH2O) x fiO2]-pCO2
◉ pH2O. Answer: 47mmHg (water vapor produced in lung)
◉ pCO2. Answer: 50mmHg produced by lung breathing air
40mmHg produced by lung breathing oxygen
