Poids prédit … et plus

Prédiction du poids, de la ventilation par minute, de l’espace mort et calcul du ratio ventilatoire

Poids et ventilation prédite

import { resultSpan } from "@progrt/utilitaires"

function pbwDevine(cm, sexe = "M") {
  let a = { M: 50, F: 45.5 };
  let p =  a[sexe] + 0.9 * (cm - 152);
  return Math.max(p, 0);
}

viewof sexe =  Inputs.radio(["M", "F"], { label: "Sexe", value: null });
viewof taille = Inputs.number({label: 'Taille (cm)', value: null});

pbw = pbwDevine(taille, sexe);
resultSpan(pbw, 0, 'Poids prédit', 'kg');

ventPredite = 0.1 * pbw;
resultSpan(ventPredite, 1, 'Ventilation prédite', 'l/m');

function vtbl(pbw, t=d3.ticks(4, 8, 4)){
    let factors = d3.ticks(4, 8, 4);
    let vts = factors.map(f=> Math.round(pbw*f));

    const tbl = html`<table class='table'>
    <tr>
    ${factors.map(f=>`<th>${f} ml/kg</th>`)}
    </tr>
    <tr>
    ${vts.map(v=>`<td>${Math.round(1000 * ventPredite/v)} x ${v} ml</td>`)}
    </tr>
    </table>`;
    return tbl;
}

isNaN(pbw) || pbw <= 0 ? html`` : vtbl(pbw);

Espace mort prédit

function cpt(taille, poids, age, sexe){
  const f = {
    M: {a: -4.73, b: .0776, c: -0.019, d: 0},
    F: {a: -6.35, b: .0738, c: 0, d: -0.016}
  };
  if(taille && poids && age && sexe){
    
    let {a, b, c, d} = f[sexe];
    return a + b * taille + c * poids + d * age;
  }

}

function VDphys(CPT, Vc, age) {
  return -65.2 + 11.6 * CPT + 0.173 * Vc + 1.33 * age;
} 
function VDaw(CPT, Vc) {
  return 4.9 + 11.3 * CPT + 0.062 * Vc;
}
viewof poids =  Inputs.number({label: "Poids (kg)", value: null });

viewof age = Inputs.number({label: 'Âge (Années)', value: null});

viewof vc = Inputs.number({label: 'Volume courant (ml)', value: null});

cptPredite = cpt(taille, poids, age, sexe);
resultSpan(cptPredite, 3, 'CPT prédite', 'l');

resultSpan(VDphys(cptPredite, vc, age), 0, 'EM<sub>phys</sub> prédit', 'ml', vc);

resultSpan(VDaw(cptPredite, vc), 0, 'EM<sub>anat</sub> prédit', 'ml', vc);

Ratio ventilatoire

function ratioVent (ventMinute, PCO2, pbw) {
  const PCO2pred = 37.5;
  return (ventMinute * PCO2)/(.1 * pbw * PCO2pred);
}

viewof vact =  Inputs.number({label: "Ventilation actuelle (l/m)", value: null });
viewof pact = Inputs.number({label: 'PCO₂ actuelle (mmHg)', value: null});

resultSpan(ratioVent(vact, pact, pbw), 2, 'Ratio rentilatoire')