def test_form_rejects_empty_string(self):
form = CRIMetoclopramideForm(data={'weight': '',
'rate': '',
'volume': '',
'infusion': '',
'inc_volume': 100,
'inc_infusion': 1})
self.assertFalse(form.is_valid())
def test_increase_volume_and_infusion_fields_are_optional(self):
form = CRIMetoclopramideForm(data={'weight': 4.0,
'rate': 10,
'volume': 100,
'infusion': 4,
'inc_volume': '',
'inc_infusion': ''})
self.assertTrue(form.is_valid())
def test_form_rejects_non_numeric_input(self):
form = CRIMetoclopramideForm(data={'weight': 'wait',
'rate': 'eight',
'volume': 'volume',
'infusion': 'fusion',
'inc_volume': 'volume',
'inc_infusion': 'fusion'})
self.assertFalse(form.is_valid())
def calc_cri_metoclopramide(request):
"""Calculates CRI dosages for metoclopramide
GET parameters:
weight: weight in kg
rate: current rate
volume: current iv volume in mLs
infusion: target infusion rate
Context:
rx: calculated cri dosages rounded to 3 decimal places
"""
form = CRIMetoclopramideForm()
rx = dict()
if request.method == 'GET' and request.is_ajax():
form = CRIMetoclopramideForm(data=request.GET)
if form.is_valid():
weight = float(request.GET['weight'])
rate = float(request.GET['rate'])
volume = float(request.GET['volume'])
infusion = float(request.GET['infusion'])
dose = (weight * infusion / 5)/(rate * 24) * volume
rx = {'maint': round((weight * 2.2 * 30)/24, 3),
'maint_plus': round((weight * 30 + 70)/24, 3),
'dose': round(dose, 3),
'concentration': round(dose * 5 / volume, 3)}
if request.GET['inc_infusion'] and request.GET['inc_volume']:
inc_volume = float(request.GET['inc_volume'])
inc_infusion = float(request.GET['inc_infusion'])
dose_inc_infusion = inc_infusion + infusion
rx['inc_infusion'] = round(dose_inc_infusion, 3)
rx['inc_dose'] = round(((dose_inc_infusion * weight / (rate * 24)) - (dose * 5 / volume)) * inc_volume / 5, 3)
rx['inc_rate'] = round((dose_inc_infusion * weight)/((dose * 5)/volume)/24, 3)
return render(request, 'calc/cri_metoclopramide.html', {'navbar': 'calc',
'form': form,
'rx': rx})
