HYPERBARIC STUDY QUESTIONS AND
ANSWERS
Pressure xis xdefined xas x- xcorrect xanswers x-The xforce xper xunit xarea xacting xon xa
xsurface xin xa xdirection xperpendicular xto xthat xsurface
Gas xis xdefined xas x- xcorrect xanswers x-A xphase xof xmatter
In xthe xgas xphase, xthe xatoms xor xmolecules xbasically xmove x- xcorrect xanswers x-
Randomly
Liquids xchange xto xa xgas xat x- xcorrect xanswers x-their xrespective xboiling xpoints
Hydraulics xis xa xbranch xof xscience xand xengineering xconcerned xwith xthe
xmechanical xproperties xof x- xcorrect xanswers x-Liquids
,When xapplying xpressure xto xa xfluid, xthe xpressure xis xexerted x- xcorrect xanswers x-In
xall xdirections xequally
A xmechanical xgauge xis xused xwhen xmeasuring xgas xpressure xin xa xsealed
xcontainer. xFor xall xcommon xpressure xgauges, xthe xpressure xindicated xon xthe
xgauge xis x- xcorrect xanswers x-Less xthan xabsolute xpressure xbecause xgauges x(and
xgauge xpressures) xignore xthe xambient x(barometric) xpressure xaround xus. xThey
xony xmeasure xthe xextra xpressure xin xthe xcontainer.
Absolute xpressure xcan xbe xdefined xas x- xcorrect xanswers x-The xamount xof
xpressure xwithin xthe xsealed xvessel x+ xthe xamount xof xpressure xoutside xthe xsealed
xvessel
Absolute xpressure xcan xalso xbe xdefined xas x- xcorrect xanswers x-Gauge xpressure x+
xatmosphere, xtotal xpressure xand,true xpressure.
1 xatmosphere xequals x- xcorrect xanswers x-760 xmmHg<br>14.7 xpsi<br>33 xfsw
The xbarometric xpressure xin xDenver x(elevation x5000 xft) xis xless xthan xbarometric
xpressure xat xsea xlevel x- xcorrect xanswers x-True
To xconvert xfrom xATA xto xfsw x- xcorrect xanswers x-subtract x1, xthen xmultiply xby x33
To xconvert xATA xto xmmHg x- xcorrect xanswers x-multiply xby x760 xmmHg
To xconvert xATA xto xPSI x- xcorrect xanswers x-subtract x1, xthen xmultiply xby x14.7
To xconvert xFSW xto xATA x- xcorrect xanswers x-divide xby x33, xthen xadd x1
Boyle's xlaw xis xabout xthe x- xcorrect xanswers x-pressure-volume xrelationship
Which xgas xlaw xhas xan xinversely xproportional xrelationship x- xcorrect xanswers x-
Boyle's xlaw
According xto xBoyle's xlaw, x(assuming xthe xtemperature xremains xconstant) xwhen xthe
xpressure xincreases, xthe xvolume x- xcorrect xanswers x-Decreases xproportionally
When xapplying xboyle's xLaw xto xthe xhuman xbody, xwe xworry xabout xair-filled xspaces
xbeing xshrunk x(or xsqueezed) xwhen xpressure xaround xthe xbody xincreases. xThis
xparticular xtype xof xdamage xis xknown xas. x- xcorrect xanswers x-Barotrauma
Boyle's xEquation xis x- xcorrect xanswers x-P1xV1= xP2xV2
Charles xlaw xis xabout xthe x- xcorrect xanswers x-temperature-volume xrelationship
,According xto xCharle's xlaw, xthe xvolume xin xa xflexible xcontainer,like xa xballoon, xwill
x________ xwhen xthe xtempature xincreases x(assuming xthe xpressure xremains
xconstant). x- xcorrect xanswers x-Increase xproportionally
According xto xCharle's xlaw, xthe xtemperature xin xa xflexible xcontainer, xlike xa xballoon,
xwill______ xwhen xthe xvolume xincreases x(assuming xthe xpressure xremains
xconstant) x- xcorrect xanswers x-Increase xproportionally
Gay-Lussac's xlaw xis xabout x- xcorrect xanswers x-Temperature-pressure xrelationship
According xto xGay-Lussac's xlaw, xthe xtemperature xin xa xrigid xcontainer, xlike xa
xscuba xtank xor xa xhyperbaric xchamber, xwill______ xwhen xthe xpressure xincreases
x(assuming xthe xvolume xremains xconstant) x- xcorrect xanswers x-Increase
xproportionally
According xto xGay-Lussac's xlaw, xthe xtemperature xin xa xrigid xcontainer,like xa xscuba
xtank xor xa xhyperbaric xchamber, xwill x_______ xwhen xthe xpressure xdecreases
x(assuming xthe xvolume xremains xconstant) x- xcorrect xanswers x-Decrease
xproportionally
Gay-Lussac's xLaw x(in xthe xhyperbaric xchamber) xis ximportant xto xunderstand
xbecause xwhen xwe xstart xincreasing xthe xpressure xin xthe xchamber, xthe xpatient xis
xlikely xto x- xcorrect xanswers x-Complain xof xbeing xhot
Gay-Lussac's xLaw x(in xthe xhyperbaric xchamber) xis ximportant xto xunderstand
xbecause xwhen xwe xstart xdecreasing xthe xpressure xin xthe xchamber, xthe xpatient xis
xlikely xto x- xcorrect xanswers x-Complain xof xbeing xcold
"Adiabatic xheating" xand x"adiabatic xcooling" xrefer xto x- xcorrect xanswers x-The
xtemperature xrise xand xtemperature xdrop xwhen xchamber xpressure xchanges
GAy-Lussac's xLaw x(in xscuba xdiving) xis ximportant xto xunderstand xbecause xwhen
xwe xstart xincreasing xthe xpressure xin xa xscuba xtank x(during xa xrefill xat xthe xscuba
xshop), xthe xtank xwill xget x_____ xduring xthe xrefill_____ xwhile xit xsits xat xroom
xtemperature. xThis xwill xcause xthe xpressure xof xgas xin xthe xcylinder xto x_______ x-
xcorrect xanswers x-Warmer;cool;decrease
Gay-Lussac's xLaw x( xin xscuba xdiving) xis ximportant xto xunderstand xbecause xwhen
xwe xlet xa xfull xscuba xcyllinder xlay xin xthe xsun xand xheat xup, xthe xpressure xin xthe
xtank xwill x_______. xThis xcould xpotentially xcause_____. x- xcorrect xanswers x-
Increase; xthe xscuba xcyllinder xto xrupture
When xworking xmathematical xproblems xinvolving xCharles' xlaw xlaw xor xGay-Lussac's
xlaw, xit xis xnecessary xto xconvert xthe xtemperature xfrom xcelcius xto x_____. xTo xdo
xthis xyou x_______ x- xcorrect xanswers x-Kelvin; xadd x237 xdegrees
, When xworking xmathematical xproblems xinvolving xCharles' xlaw xor xGay-Lussac's
xlaw, xit xis xnecessary xto xconvert xthe xtemperature xfrom xfahrenheit xto______. xTo
xdo xthis xyou______ x- xcorrect xanswers x-Rankine; xadd x460 xdegrees
Henry's xlaw xis xabout x- xcorrect xanswers x-Gas xin xsolution
A xcommon xexample xof xHenry's xlaw xis x- xcorrect xanswers x-A xnewly xopened xbottle
xof xsoda
Henry's xlaw xis xinvolved xin xall xof xthe xfollowing xexcept; x- xcorrect xanswers x-
Increased xintracrainal xpressure
The xfamous xstudy xthat xused xthe xtheory xbehind xHenry's xLaw xto xkeep xpigs xalive
xby xdissolving xoxygen xin xthe xplasma xof xthe xblood xafter xall xthe xred xblood xcells
xhad xbeen xremoved xwas xdone xby x- xcorrect xanswers x-Boerema xin x1960
Nitrogen xnicrosis xis xoften xreferred xto xas x- xcorrect xanswers x-Rapture xof xthe xdeep
true xor xfalse; xNitrogen xnarcosis xis xcaused xby xbreathing xan xincreased xpartial
xpressure xof xnitrogen xabove x2,000 xmmHg x- xcorrect xanswers x-true
true xor xfalse; xCentral xnervous xsystem xoxygen xtoxicity xis xcaused xby xbreathing xan
xincreased xpartial xpressure xof xoxygen x- xcorrect xanswers x-True
true xor xfalse; xDalton's xlaw xstates xthat xthe xtotal xpressure xexerted xby xa xmixture
xwill xincrease xproportionally xas xthe xtotal xpressure xincreases x- xcorrect xanswers x-
True
Pascal's xlaw xis xabout x- xcorrect xanswers x-Hydraulic xpressure
"A xbubble xdeep xwithin xthe xbody's xtissues xresponds xto xthe xpressure xapplied
xoutside xthe xbody" xis xa xstatement xthat xexemplifies x- xcorrect xanswers x-Pascal's
xLaw
Graham's xlaw xis xabout x- xcorrect xanswers x-Diffusion xof xgases
Diffusion xcan xbe xdefined xas x- xcorrect xanswers x-the xmovement xof xparticles xfrom
xhigher xconcentration xto xlower xconcentration
The xmaximum xpressure xacheived xduring xa xhyperbaric xexposure xis xcommonaly
xcalled xthe x"depth" xor xthe x"treatment xpressure", xor x"the xbottom". xThis xis xtypically
xmeasured xin x- xcorrect xanswers x-absolute xatmospheres x(ATA) xfeet xof xsea xwater
x(FSW) xor xmillimeters xof xmercury x(mmHg)
The xcomponents xof xgases xin xair xis x- xcorrect xanswers x-79% xnitrogen xand x21%
xoxygen
ANSWERS
Pressure xis xdefined xas x- xcorrect xanswers x-The xforce xper xunit xarea xacting xon xa
xsurface xin xa xdirection xperpendicular xto xthat xsurface
Gas xis xdefined xas x- xcorrect xanswers x-A xphase xof xmatter
In xthe xgas xphase, xthe xatoms xor xmolecules xbasically xmove x- xcorrect xanswers x-
Randomly
Liquids xchange xto xa xgas xat x- xcorrect xanswers x-their xrespective xboiling xpoints
Hydraulics xis xa xbranch xof xscience xand xengineering xconcerned xwith xthe
xmechanical xproperties xof x- xcorrect xanswers x-Liquids
,When xapplying xpressure xto xa xfluid, xthe xpressure xis xexerted x- xcorrect xanswers x-In
xall xdirections xequally
A xmechanical xgauge xis xused xwhen xmeasuring xgas xpressure xin xa xsealed
xcontainer. xFor xall xcommon xpressure xgauges, xthe xpressure xindicated xon xthe
xgauge xis x- xcorrect xanswers x-Less xthan xabsolute xpressure xbecause xgauges x(and
xgauge xpressures) xignore xthe xambient x(barometric) xpressure xaround xus. xThey
xony xmeasure xthe xextra xpressure xin xthe xcontainer.
Absolute xpressure xcan xbe xdefined xas x- xcorrect xanswers x-The xamount xof
xpressure xwithin xthe xsealed xvessel x+ xthe xamount xof xpressure xoutside xthe xsealed
xvessel
Absolute xpressure xcan xalso xbe xdefined xas x- xcorrect xanswers x-Gauge xpressure x+
xatmosphere, xtotal xpressure xand,true xpressure.
1 xatmosphere xequals x- xcorrect xanswers x-760 xmmHg<br>14.7 xpsi<br>33 xfsw
The xbarometric xpressure xin xDenver x(elevation x5000 xft) xis xless xthan xbarometric
xpressure xat xsea xlevel x- xcorrect xanswers x-True
To xconvert xfrom xATA xto xfsw x- xcorrect xanswers x-subtract x1, xthen xmultiply xby x33
To xconvert xATA xto xmmHg x- xcorrect xanswers x-multiply xby x760 xmmHg
To xconvert xATA xto xPSI x- xcorrect xanswers x-subtract x1, xthen xmultiply xby x14.7
To xconvert xFSW xto xATA x- xcorrect xanswers x-divide xby x33, xthen xadd x1
Boyle's xlaw xis xabout xthe x- xcorrect xanswers x-pressure-volume xrelationship
Which xgas xlaw xhas xan xinversely xproportional xrelationship x- xcorrect xanswers x-
Boyle's xlaw
According xto xBoyle's xlaw, x(assuming xthe xtemperature xremains xconstant) xwhen xthe
xpressure xincreases, xthe xvolume x- xcorrect xanswers x-Decreases xproportionally
When xapplying xboyle's xLaw xto xthe xhuman xbody, xwe xworry xabout xair-filled xspaces
xbeing xshrunk x(or xsqueezed) xwhen xpressure xaround xthe xbody xincreases. xThis
xparticular xtype xof xdamage xis xknown xas. x- xcorrect xanswers x-Barotrauma
Boyle's xEquation xis x- xcorrect xanswers x-P1xV1= xP2xV2
Charles xlaw xis xabout xthe x- xcorrect xanswers x-temperature-volume xrelationship
,According xto xCharle's xlaw, xthe xvolume xin xa xflexible xcontainer,like xa xballoon, xwill
x________ xwhen xthe xtempature xincreases x(assuming xthe xpressure xremains
xconstant). x- xcorrect xanswers x-Increase xproportionally
According xto xCharle's xlaw, xthe xtemperature xin xa xflexible xcontainer, xlike xa xballoon,
xwill______ xwhen xthe xvolume xincreases x(assuming xthe xpressure xremains
xconstant) x- xcorrect xanswers x-Increase xproportionally
Gay-Lussac's xlaw xis xabout x- xcorrect xanswers x-Temperature-pressure xrelationship
According xto xGay-Lussac's xlaw, xthe xtemperature xin xa xrigid xcontainer, xlike xa
xscuba xtank xor xa xhyperbaric xchamber, xwill______ xwhen xthe xpressure xincreases
x(assuming xthe xvolume xremains xconstant) x- xcorrect xanswers x-Increase
xproportionally
According xto xGay-Lussac's xlaw, xthe xtemperature xin xa xrigid xcontainer,like xa xscuba
xtank xor xa xhyperbaric xchamber, xwill x_______ xwhen xthe xpressure xdecreases
x(assuming xthe xvolume xremains xconstant) x- xcorrect xanswers x-Decrease
xproportionally
Gay-Lussac's xLaw x(in xthe xhyperbaric xchamber) xis ximportant xto xunderstand
xbecause xwhen xwe xstart xincreasing xthe xpressure xin xthe xchamber, xthe xpatient xis
xlikely xto x- xcorrect xanswers x-Complain xof xbeing xhot
Gay-Lussac's xLaw x(in xthe xhyperbaric xchamber) xis ximportant xto xunderstand
xbecause xwhen xwe xstart xdecreasing xthe xpressure xin xthe xchamber, xthe xpatient xis
xlikely xto x- xcorrect xanswers x-Complain xof xbeing xcold
"Adiabatic xheating" xand x"adiabatic xcooling" xrefer xto x- xcorrect xanswers x-The
xtemperature xrise xand xtemperature xdrop xwhen xchamber xpressure xchanges
GAy-Lussac's xLaw x(in xscuba xdiving) xis ximportant xto xunderstand xbecause xwhen
xwe xstart xincreasing xthe xpressure xin xa xscuba xtank x(during xa xrefill xat xthe xscuba
xshop), xthe xtank xwill xget x_____ xduring xthe xrefill_____ xwhile xit xsits xat xroom
xtemperature. xThis xwill xcause xthe xpressure xof xgas xin xthe xcylinder xto x_______ x-
xcorrect xanswers x-Warmer;cool;decrease
Gay-Lussac's xLaw x( xin xscuba xdiving) xis ximportant xto xunderstand xbecause xwhen
xwe xlet xa xfull xscuba xcyllinder xlay xin xthe xsun xand xheat xup, xthe xpressure xin xthe
xtank xwill x_______. xThis xcould xpotentially xcause_____. x- xcorrect xanswers x-
Increase; xthe xscuba xcyllinder xto xrupture
When xworking xmathematical xproblems xinvolving xCharles' xlaw xlaw xor xGay-Lussac's
xlaw, xit xis xnecessary xto xconvert xthe xtemperature xfrom xcelcius xto x_____. xTo xdo
xthis xyou x_______ x- xcorrect xanswers x-Kelvin; xadd x237 xdegrees
, When xworking xmathematical xproblems xinvolving xCharles' xlaw xor xGay-Lussac's
xlaw, xit xis xnecessary xto xconvert xthe xtemperature xfrom xfahrenheit xto______. xTo
xdo xthis xyou______ x- xcorrect xanswers x-Rankine; xadd x460 xdegrees
Henry's xlaw xis xabout x- xcorrect xanswers x-Gas xin xsolution
A xcommon xexample xof xHenry's xlaw xis x- xcorrect xanswers x-A xnewly xopened xbottle
xof xsoda
Henry's xlaw xis xinvolved xin xall xof xthe xfollowing xexcept; x- xcorrect xanswers x-
Increased xintracrainal xpressure
The xfamous xstudy xthat xused xthe xtheory xbehind xHenry's xLaw xto xkeep xpigs xalive
xby xdissolving xoxygen xin xthe xplasma xof xthe xblood xafter xall xthe xred xblood xcells
xhad xbeen xremoved xwas xdone xby x- xcorrect xanswers x-Boerema xin x1960
Nitrogen xnicrosis xis xoften xreferred xto xas x- xcorrect xanswers x-Rapture xof xthe xdeep
true xor xfalse; xNitrogen xnarcosis xis xcaused xby xbreathing xan xincreased xpartial
xpressure xof xnitrogen xabove x2,000 xmmHg x- xcorrect xanswers x-true
true xor xfalse; xCentral xnervous xsystem xoxygen xtoxicity xis xcaused xby xbreathing xan
xincreased xpartial xpressure xof xoxygen x- xcorrect xanswers x-True
true xor xfalse; xDalton's xlaw xstates xthat xthe xtotal xpressure xexerted xby xa xmixture
xwill xincrease xproportionally xas xthe xtotal xpressure xincreases x- xcorrect xanswers x-
True
Pascal's xlaw xis xabout x- xcorrect xanswers x-Hydraulic xpressure
"A xbubble xdeep xwithin xthe xbody's xtissues xresponds xto xthe xpressure xapplied
xoutside xthe xbody" xis xa xstatement xthat xexemplifies x- xcorrect xanswers x-Pascal's
xLaw
Graham's xlaw xis xabout x- xcorrect xanswers x-Diffusion xof xgases
Diffusion xcan xbe xdefined xas x- xcorrect xanswers x-the xmovement xof xparticles xfrom
xhigher xconcentration xto xlower xconcentration
The xmaximum xpressure xacheived xduring xa xhyperbaric xexposure xis xcommonaly
xcalled xthe x"depth" xor xthe x"treatment xpressure", xor x"the xbottom". xThis xis xtypically
xmeasured xin x- xcorrect xanswers x-absolute xatmospheres x(ATA) xfeet xof xsea xwater
x(FSW) xor xmillimeters xof xmercury x(mmHg)
The xcomponents xof xgases xin xair xis x- xcorrect xanswers x-79% xnitrogen xand x21%
xoxygen
