Difference between revisions of "MediaWiki:Gadget-calculator-anatomyPhysiology.js"
From WikiAnesthesia
Chris Rishel (talk | contribs) |
Chris Rishel (talk | contribs) |
||
| Line 500: | Line 500: | ||
'ebv', | 'ebv', | ||
'fluidMaintenanceRate', | 'fluidMaintenanceRate', | ||
'maxAbl' | 'maxAbl', | ||
'minUop' | |||
], | ], | ||
css: { | css: { | ||
Revision as of 17:35, 31 July 2021
( function() {
var moduleId = 'patientStats';
mw.calculators.addUnitsBases( {
hgb: {
toString: function( units ) {
units = units.replace( 'hgbperdL', '/dL' );
units = units.replace( 'pcthct', '%' );
return units;
}
}
} );
mw.calculators.addUnits( {
pcthct: {
baseName: 'hgb'
},
ghgbperdL: {
baseName: 'hgb',
prefixes: 'short',
definition: '3 pcthct'
}
} );
mw.calculators.addVariables( {
caseDuration: {
name: 'Case duration',
type: 'number',
abbreviation: 'Duration',
maxLength: 3,
units: [
'hr',
'min'
]
},
hct: {
name: 'Current hematocrit',
type: 'number',
abbreviation: 'Current hct',
defaultValue: '45 pcthct',
maxLength: 4,
units: [
'pcthct',
'ghgbperdL'
]
},
minHct: {
name: 'Minimum hematocrit',
type: 'number',
abbreviation: 'Min hct',
defaultValue: '21 pcthct',
maxLength: 4,
units: [
'pcthct',
'ghgbperdL'
]
}
} );
mw.calculators.addCalculations( {
bladeMacSize: {
name: 'Laryngoscope blade size (MAC)',
abbreviation: 'Blade (MAC)',
data: {
variables: {
required: [ 'age' ]
}
},
type: 'string',
references: [
'Smith\'s Anesthesia for Infants and Children. 8e. p356'
],
calculate: function( data ) {
var age = data.age.toNumber( 'yo' );
if( age >= 6 ) {
return '3';
} else if( age >= 1 ) {
// ( age + 16 ) / 4
// To nicely display in increments of 0.5, double the calculation, round (floor), then divide by 2
return '2';
} else {
return '-';
}
}
},
bladeMillerSize: {
name: 'Laryngoscope blade size (Miller)',
abbreviation: 'Blade (Miller)',
data: {
variables: {
required: [ 'age' ]
}
},
type: 'string',
references: [
'Smith\'s Anesthesia for Infants and Children. 8e. p356'
],
calculate: function( data ) {
var age = data.age.toNumber( 'yo' );
if( age >= 2 ) {
return '2';
} else if( age >= 1 / 12 ) {
return '1';
} else if( age >= 0 ) {
return '0-1';
} else {
return '0';
}
}
},
bmi: {
name: 'Body mass index',
abbreviation: 'BMI',
data: {
variables: {
required: [ 'weight', 'height' ]
}
},
digits: 0,
units: 'kg/m^2',
formula: '<math>\\mathrm{BMI} = \\frac{\\text{mass}_\\text{kg}}{{\\text{height}_\\text{m}}^2}</math>',
link: '[[Body mass index]]',
references: [],
calculate: function( data ) {
return data.weight.toNumber( 'kgwt' ) / Math.pow( data.height.toNumber( 'm' ), 2 );
}
},
bsa: {
name: 'Body surface area',
abbreviation: 'BSA',
data: {
variables: {
required: [ 'weight', 'height' ]
}
},
digits: 2,
units: 'm^2',
formula: '<math>\\mathrm{BSA} = \\sqrt{\\frac{\\mathrm{Weight_{kg}}*\\mathrm{Height_{cm}}}{3600}}</math>',
link: false,
references: [
'Mosteller RD. Simplified calculation of body-surface area. N Engl J Med. 1987 Oct 22;317(17):1098. doi: 10.1056/NEJM198710223171717. PMID: 3657876.'
],
calculate: function( data ) {
return Math.sqrt( data.height.toNumber( 'cm' ) * data.weight.toNumber( 'kgwt' ) / 3600 );
}
},
ebv: {
name: 'Estimated blood volume',
abbreviation: 'EBV',
data: {
variables: {
required: [ 'weight', 'age' ]
}
},
digits: 0,
units: 'mL',
formula: '',
references: [
'Morgan & Mikhail\'s Clinical Anesthesiology. 5e. p1168'
],
calculate: function( data ) {
var weight = data.weight.toNumber( 'kgwt' );
var age = data.age.toNumber( 'yo' );
var ebvPerKg;
if( age >= 1 ) {
if( data.gender === 'F' ) {
ebvPerKg = 65;
} else {
ebvPerKg = 75;
}
} else if( age >= 1/12 ) {
ebvPerKg = 80;
} else if( age >= 0 ) {
ebvPerKg = 85;
} else {
ebvPerKg = 95;
}
return weight * ebvPerKg;
}
},
ettDepth: {
name: 'Endotracheal tube depth',
abbreviation: 'ETT depth',
data: {
variables: {
required: [ 'age' ]
}
},
type: 'string',
references: [
'Smith\'s Anesthesia for Infants and Children. 8e. p356'
],
calculate: function( data ) {
var age = data.age.toNumber( 'yo' );
var depth;
if( age >= 12 ) {
depth = '20+';
} else if( age >= 2 ) {
// ( age / 2 ) + 12
depth = Math.round( age / 2 + 12 );
} else if( age >= 1 ) {
depth = 12;
} else if( age >= 0.5 ) {
depth = 11;
} else if( age >= 0 ) {
depth = 9;
} else {
depth = '7-8';
}
return depth + ' cm from teeth';
}
},
ettSize: {
name: 'Endotracheal tube size',
abbreviation: 'ETT size',
data: {
variables: {
required: [ 'age' ]
}
},
type: 'string',
references: [
'Smith\'s Anesthesia for Infants and Children. 8e. p356'
],
calculate: function( data ) {
var age = data.age.toNumber( 'yo' );
var size;
if( age >= 12 ) {
size = '6+';
} else if( age >= 1 ) {
// ( age + 16 ) / 4
// To nicely display in increments of 0.5, double the calculation, round (floor), then divide by 2
size = String( Math.floor( 2 * ( ( age + 16 ) / 4 ) ) / 2 );
} else if( age >= 0.5 ) {
size = '3.5-4';
} else if( age >= 0 ) {
size = '3-3.5';
} else {
size = '2.5-3';
}
return size + ' mm (ID)';
}
},
fluidMaintenanceRate: {
name: 'Fluid maintenance rate',
abbreviation: 'Fluid maint.',
data: {
variables: {
required: [ 'weight' ]
}
},
digits: 0,
units: 'mL/hr',
formula: '',
references: [
'Miller\'s Anesthesia 7e, section IV, pg. 1728'
],
calculate: function( data ) {
var weight = data.weight.toNumber( 'kgwt' );
// Uses 4-2-1 rule
var maintenanceRate = 4 * Math.min( weight, 10 );
if( weight > 10 ) {
maintenanceRate += 2 * Math.min( weight - 10, 10 );
}
if( weight > 20) {
maintenanceRate += weight - 20;
}
return maintenanceRate;
}
},
ibw: {
name: 'Ideal body weight',
abbreviation: 'IBW',
data: {
variables: {
required: [ 'height', 'gender' ]
}
},
units: 'kg',
link: 'https://en.wikipedia.org/wiki/Human_body_weight#Ideal_body_weight',
references: [
'Devine BJ. Gentamicin therapy. Drug Intell Clin Pharm. 1974;8:650–655.'
],
calculate: function( data ) {
if( data.height.toNumber( 'cm' ) < 152 ) {
throw new Error( 'Ideal body weight may only be applied to persons 152 cm (60 inches) or taller' );
}
var baseWeight = data.gender === 'F' ? 45.5 : 50;
// baseWeight + 2.3 kg for every inch over 5 feet
return baseWeight + 2.3 * ( data.height.toNumber( 'in' ) - 60 );
}
},
lbw: {
name: 'Lean body weight',
abbreviation: 'LBW',
data: {
variables: {
required: [ 'gender', 'height', 'weight' ]
}
},
units: 'kg',
link: 'https://en.wikipedia.org/wiki/Lean_body_mass',
references: [
'Janmahasatian S, Duffull SB, Ash S, Ward LC, Byrne NM, Green B. Quantification of lean bodyweight. Clin Pharmacokinet. 2005; 44(10): 1051-65.'
],
calculate: function( data ) {
if( data.gender === 'F' ) {
return 9270 * data.weight.toNumber( 'kgwt' ) / ( 8780 + 244 * data.weight.toNumber( 'kgwt' ) / Math.pow( data.height.toNumber( 'm' ), 2 ) );
} else {
return 9270 * data.weight.toNumber( 'kgwt' ) / ( 6680 + 216 * data.weight.toNumber( 'kgwt' ) / Math.pow( data.height.toNumber( 'm' ), 2 ) );
}
}
},
lmaSize: {
name: 'Laryngeal mask airway size',
abbreviation: 'LMA size',
data: {
variables: {
required: [ 'weight' ]
}
},
type: 'string',
references: [
'Smith\'s Anesthesia for Infants and Children. 8e. p356'
],
calculate: function( data ) {
var weight = data.weight.toNumber( 'kgwt' );
var size;
if( weight > 100 ) {
size = '6';
} else if( weight > 70 ) {
size = '5';
} else if( weight > 50 ) {
size = '4';
} else if( weight > 30 ) {
size = '3';
} else if( weight > 20 ) {
size = '2.5';
} else if( weight > 10 ) {
size = '2';
} else if( weight > 5 ) {
size = '1.5';
} else {
size = '1';
}
return size;
}
},
maxAbl: {
name: 'Maximum allowable blood loss',
abbreviation: 'Max ABL',
data: {
calculations: {
required: [ 'ebv' ]
},
variables: {
required: [ 'weight', 'age', 'hct', 'minHct' ]
}
},
digits: 0,
units: 'mL',
formula: '',
references: [
'Morgan & Mikhail\'s Clinical Anesthesiology. 5e. p1168'
],
calculate: function( data ) {
var currentHct = data.hct.toNumber( 'pcthct' );
var minHct = data.minHct.toNumber( 'pcthct' );
if( currentHct < minHct ) {
return '-';
}
return data.ebv.toNumber( 'mL' ) * ( currentHct - minHct ) / currentHct;
},
onRendered: function( $selector ) {
var extraClass = 'calculator-calculation-extra-maxAbl';
if( !$( '.' + extraClass ).length ) {
var $extraContainer = $( '<div>', {
class: extraClass
} ).css( 'margin-left', '1rem' );
$extraContainer.append( mw.calculators.createInputGroup( [
'hct',
'minHct'
] ) );
$selector.after( $extraContainer );
}
}
},
minUop: {
name: 'Minimum urine output',
abbreviation: 'Min UOP',
data: {
variables: {
required: [ 'weight', 'age' ],
optional: [ 'caseDuration' ]
}
},
type: 'string',
formula: '',
references: [
'Klahr S, Miller SB. Acute oliguria. N Engl J Med. 1998 Mar 5;338(10):671-5. doi: 10.1056/NEJM199803053381007. PMID: 9486997.',
'Arant BS Jr. Postnatal development of renal function during the first year of life. Pediatr Nephrol. 1987 Jul;1(3):308-13. doi: 10.1007/BF00849229. PMID: 3153294.'
],
calculate: function( data ) {
var weight = data.weight.toNumber( 'kgwt' );
var age = data.weight.toNumber( 'yo' );
var caseDuration = data.caseDuration ? data.caseDuration.toNumber( 'hr' ) : null;
var minUop;
if( age > 1 ) {
minUop = 0.5 * weight;
} else {
minUop = 1 * weight;
}
if( caseDuration ) {
minUop = minUop * caseDuration + ' mL';
} else {
minUop = minUop + ' mL/hr';
}
return minUop;
},
onRendered: function( $selector ) {
var extraClass = 'calculator-calculation-extra-minUop';
if( !$( '.' + extraClass ).length ) {
var $extraContainer = $( '<div>', {
class: extraClass
} ).css( 'margin-left', '1rem' );
$extraContainer.append( mw.calculators.createInputGroup( [
'caseDuration'
] ) );
$selector.after( $extraContainer );
}
}
}
} );
var tableMaxWidth = 600;
mw.calculators.addCalculators( moduleId, {
anatomy: {
name: 'Patient statistics',
calculations: [
'bmi',
'bsa',
'ibw',
'lbw'
],
css: {
'max-width': tableMaxWidth
},
table: true
},
airway: {
name: 'Airway management',
calculations: [
'bladeMacSize',
'bladeMillerSize',
'ettSize',
'ettDepth',
'lmaSize'
],
css: {
'max-width': tableMaxWidth
},
table: true
},
fluidManagement: {
name: 'Fluid management',
calculations: [
'ebv',
'fluidMaintenanceRate',
'maxAbl',
'minUop'
],
css: {
'max-width': tableMaxWidth
},
table: true
}
} );
}() );