Glomeruläre Filtrationsrate (GFR)
<script language="javascript" type="text/javascript"><!-- [et_pb_line_break_holder] --><!-- <!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->function inter_gfr(gfr)<!-- [et_pb_line_break_holder] -->{<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] --> inter = "";<!-- [et_pb_line_break_holder] --> if (gfr >= 90) { inter = "Stadium G1: Normale Nierenfunktion."; }<!-- [et_pb_line_break_holder] --> if (gfr < 90) { inter = "Stadium G2: Nierenfunktionseinschränkung. Evtl. renale Anämie. Kleines Blutbild? Albumin i. Urin (evtl. Mikroalbuminurie)?"; }<!-- [et_pb_line_break_holder] --> if (gfr < 60) { inter = "Stadium G3a: Mittelgradige Niereninsuffizienz. Evtl. renale Anämie, renaler Hypertonus."; }<!-- [et_pb_line_break_holder] --> if (gfr < 45) { inter = "Stadium G3b: Mittelgradige Niereninsuffizienz, moderat bix hochgradig eingeschränkt. Evtl. renale Anämie, renaler Hypertonus."; }<!-- [et_pb_line_break_holder] --> if (gfr < 30) { inter = "Stadium G4: Hochgradige Niereninsuffizienz. Es liegen regelmäßig deutliche Symptome vor, die Leistungsfähigkeit nimmt deutlich ab."; }<!-- [et_pb_line_break_holder] --> if (gfr < 15) { inter = "Stadium G5: Terminales Nierenversagen. Klinische Zeichen einer Harnvergiftung?"; }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] --> return inter;<!-- [et_pb_line_break_holder] -->}<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->function reset() {<!-- [et_pb_line_break_holder] --> document.rechner.krea.value = "";<!-- [et_pb_line_break_holder] --> document.rechner.alter.value = "";<!-- [et_pb_line_break_holder] --> document.rechner.ergebnis.value = "";<!-- [et_pb_line_break_holder] -->}<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->function round(wert, dez) {<!-- [et_pb_line_break_holder] --> wert = parseFloat(wert);<!-- [et_pb_line_break_holder] --> if (!wert) return 0;<!-- [et_pb_line_break_holder] --> dez = parseInt(dez);<!-- [et_pb_line_break_holder] --> if (!dez) dez=0;<!-- [et_pb_line_break_holder] --> var umrechnungsfaktor = Math.pow(10,dez);<!-- [et_pb_line_break_holder] --> return Math.round(wert * umrechnungsfaktor) / umrechnungsfaktor;<!-- [et_pb_line_break_holder] -->} <!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->function go() { <!-- [et_pb_line_break_holder] -->var krea = document.rechner.krea.value;<!-- [et_pb_line_break_holder] -->var tmp_alter = document.rechner.alter.value;<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->if ( (tmp_alter.trim()=="") || (krea.trim()=="") ) {<!-- [et_pb_line_break_holder] --> alert("Überprüfen Sie Ihre Eingaben zu Alter und gemessener Kreatininkonzentration.");<!-- [et_pb_line_break_holder] --> return;<!-- [et_pb_line_break_holder] -->}<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->krea = krea.replace(",", ".");<!-- [et_pb_line_break_holder] -->var kreatinin = parseFloat(Number(krea)); <!-- [et_pb_line_break_holder] -->var alter = parseFloat(Number(tmp_alter)); <!-- [et_pb_line_break_holder] -->var rasse; <!-- [et_pb_line_break_holder] -->var geschlecht; <!-- [et_pb_line_break_holder] -->if (document.rechner.einheit_alter[1].checked == true) { <!-- [et_pb_line_break_holder] -->var DatumAktuell = new Date();<!-- [et_pb_line_break_holder] -->var JahrAktuell = DatumAktuell.getFullYear();<!-- [et_pb_line_break_holder] -->alter = JahrAktuell - Number(document.rechner.alter.value); <!-- [et_pb_line_break_holder] -->}<!-- [et_pb_line_break_holder] -->if (document.rechner.einheit_krea[0].checked == false) { kreatinin = kreatinin * 0.011; }<!-- [et_pb_line_break_holder] -->if (document.rechner.geschlecht[1].checked == true) { geschlecht = 144; geschlecht2 = 0.7; faktor = 0.329; faktor2 = 1;} // weiblich<!-- [et_pb_line_break_holder] -->if (document.rechner.geschlecht[0].checked == true) { geschlecht = 141; geschlecht2 = 0.9; faktor = 0.411; faktor2 = 1.018;} // männlich<!-- [et_pb_line_break_holder] -->if (document.rechner.hautfarbe[1].checked == true) { rasse = 1; } // Wenn diese Checkbox markiert ist. dann WEISS sonst SCHWARZ<!-- [et_pb_line_break_holder] -->if (document.rechner.hautfarbe[1].checked == false) { rasse = 1.159; }<!-- [et_pb_line_break_holder] --> <!-- [et_pb_line_break_holder] -->if (isNaN(kreatinin)) {gfr = "Fehler beim Kreatinin - Überprüfen Sie Ihre Eingabe"; } <!-- [et_pb_line_break_holder] -->if (isNaN(alter)) {gfr = "Fehler beim Alter - Überprüfen Sie Ihre Eingabe"; } <!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->/* gfr = round(geschlecht * (Math.pow(kreatinin,-1.209)/(geschlecht2)) * Math.pow(0.993, alter),1);<!-- [et_pb_line_break_holder] -->document.rechner.ergebnis.value = gfr; */<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->var kreatinin_min = Math.min( (kreatinin/geschlecht2) ,1);<!-- [et_pb_line_break_holder] -->var kreatinin_max = Math.max( (kreatinin/geschlecht2) ,1);<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->gfr = round(geschlecht * Math.pow(kreatinin_min, faktor * (-1)) * Math.pow(kreatinin_max, -1.209) * Math.pow(0.993, alter) * faktor2 * rasse, 2);<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->document.rechner.ergebnis.value = gfr;<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->if ((alter > 120) && (document.rechner.einheit_alter[0].checked == true)) { document.rechner.ergebnis.value = "Alter überprüfen..."; }<!-- [et_pb_line_break_holder] -->if ((Number(document.rechner.alter.value) < 1890) && (document.rechner.einheit_alter[0].checked == false)) { document.rechner.ergebnis.value = "Geburtsjahr überprüfen..."; }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->document.rechner.inter.value = inter_gfr(gfr);<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->}<!-- [et_pb_line_break_holder] -->//--><!-- [et_pb_line_break_holder] --></script><form action="" name="rechner">
Abschätzung nach CKD-EPI-Formel
Für die Beurteilung der renalen Filtrationsleistung rsp. der Ablkärung renaler Dysfunktion wird die Glomeruläre Filtrationsrate (GFR) herangezogen. Hier können Sie mit der CKD-EPI-Formel für Erwachsene die GFR abschätzen.
Die Berechnung erfolgt nach der Formel: GFR=[m:141/w:144]*(Min([S-Kreatinin]/{m:0,7/f:0,9},1))^{m:-0,411/w:-0,329}*(Max([S-Kreatinin]/{m:0,9/w:0,7},1))^(-1.209) * 0.993^(Lebensalter) * {m:1,018/w:1} * {hell:1/dunkel:1,159}
Einschränkungen der Formel (siehe Quelle): „The sample contained a limited number of elderly people and racial and ethnic minorities with measured GFR.“
<form action="" name="rechner"><!-- [et_pb_line_break_holder] --><table><!-- [et_pb_line_break_holder] --><tbody><!-- [et_pb_line_break_holder] --><tr><!-- [et_pb_line_break_holder] --><td>Kreatinin</td><!-- [et_pb_line_break_holder] --><td><input id="krea" name="krea" type="text"><input checked="checked" name="einheit_krea" value="mg" type="radio">mg/dl<input name="einheit_krea" value="mol" type="radio">µmol/l</td><!-- [et_pb_line_break_holder] --></tr><!-- [et_pb_line_break_holder] --><tr><!-- [et_pb_line_break_holder] --><td>Alter</td><!-- [et_pb_line_break_holder] --><td><input id="alter" name="alter" type="text"><input name="einheit_alter" value="la" type="radio">Alter<input checked="checked" name="einheit_alter" value="gd" type="radio">Geburtsjahr</td><!-- [et_pb_line_break_holder] --></tr><!-- [et_pb_line_break_holder] --><tr><!-- [et_pb_line_break_holder] --><td><strong>Geschlecht</strong></td><!-- [et_pb_line_break_holder] --><td><input checked="checked" name="geschlecht" value="männlich" type="radio">männlich<input name="geschlecht" value="weiblich" type="radio">weiblich</td><!-- [et_pb_line_break_holder] --></tr><!-- [et_pb_line_break_holder] --><tr><!-- [et_pb_line_break_holder] --><td><strong>Schwarze Hautfarbe</strong></td><!-- [et_pb_line_break_holder] --><td><input name="hautfarbe" value="ja" type="radio">Ja<input checked="checked" name="hautfarbe" value="nein" type="radio">Nein</td><!-- [et_pb_line_break_holder] --></tr><!-- [et_pb_line_break_holder] --><tr><!-- [et_pb_line_break_holder] --><td colspan="2"><input style="background: #0058a2; color: white;" onclick="go()" value="Berechnen" type="button"> <input onclick="reset()" style="background: #c4104a; color: white;" value="Zurücksetzen" type="button"></td><!-- [et_pb_line_break_holder] --></tr><!-- [et_pb_line_break_holder] --></tbody><!-- [et_pb_line_break_holder] --></table><!-- [et_pb_line_break_holder] --> <!-- [et_pb_line_break_holder] --><table><!-- [et_pb_line_break_holder] --><tbody><!-- [et_pb_line_break_holder] --><tr><!-- [et_pb_line_break_holder] --><td><!-- [et_pb_line_break_holder] --><h4>Ergebnis</h4><!-- [et_pb_line_break_holder] --></td><!-- [et_pb_line_break_holder] --><td><input id="ergebnis" style="font-weight: bold; font-size: 15px; color: #333333; border: 1px solid #333333;" name="ergebnis" value="" type="text"></td><!-- [et_pb_line_break_holder] --></tr><!-- [et_pb_line_break_holder] --><tr><!-- [et_pb_line_break_holder] --><td colspan="2">Interpretation (lt. Quelle):<!-- [et_pb_line_break_holder] --><textarea style="font-size: 15px; background: #FFFFFF; font-weight: 600; color: #0058a2; width: 100%;" name="inter" rows="5"></textarea></td><!-- [et_pb_line_break_holder] --></tr><!-- [et_pb_line_break_holder] --></tbody><!-- [et_pb_line_break_holder] --></table><!-- [et_pb_line_break_holder] --></form>