Anticoagulation
Heparin stock concentration
Used to calculate syringe draw volumes for all heparin dosing at this center.
Default syringe volume
Centers using a dilute heparin stock (1,000 U/mL) should generally choose 20 mL. Otherwise higher doses automatically move to a 20 mL preparation on a per-session basis when needed.
Heparin stop time for catheter patients
For patients on a tunneled or temporary catheter. Fistula and graft patients are not affected (they stop 30 min before the end). Any patient's time can still be changed on their session screen.
Fluid removal
Dry-weight step
How far the dry weight moves each time the prescription changes it.
Fixed: 0.5 kg per step.
Weight-based: 1% of dry weight, rounded to 0.1 kg (min 0.3, max 0.8 kg).
Fixed: 0.5 kg per step.
Weight-based: 1% of dry weight, rounded to 0.1 kg (min 0.3, max 0.8 kg).
Maximum UF rate
The ceiling, not the target: sessions are still planned at 13 wherever time allows.
mL/kg/hr · whole numbers, 8–25 (13 unless changed)
Volume ceiling
For centers whose patients arrive with very large gains. It does not scale with body weight. Ordinary sessions only; low-blood-pressure and long-gap sessions keep their own, gentler limits. Anything beyond the limit carries to the next session.
Minimum UF rate for profiling
The lowest UF rate at which the machine will run a profile.
mL/hr · 0–500, in steps of 50
Dialysate sodium
Sodium in the A bag and the B bag
As printed on each bag, after mixing. Added together, they give this center's base sodium.
A bag · B bag, mEq/L
Machine's sodium adjustment range
How far above and below the base sodium the machine can adjust the dialysate sodium.
± mEq/L · 5–20
Default dialysate sodium
The dialysate sodium set at this center.
mEq/L · 135–145
Machine's operating sodium range
The lowest and highest sodium the machine runs.
lowest · highest, mEq/L
Sodium range while a profile runs
The lowest and highest sodium the machine runs during a sodium profile.
lowest · highest, mEq/L
Dialyzer reuse
Reuse dialyzers at this center
Off: every patient is single use. Turn it on if this center reuses dialyzers. Each patient can then be set to reuse on their own Edit patient screen.
Study data export
This center's saved sessions, one row each: what was entered, what the app proposed, what was
given, whether it was followed or changed (and the reason), the flags and the engine version. Patient codes only — no names.
HDscript
Hemodialysis clinical decision support
Patient data in.A complete prescription out.
Standardized, evidence-based hemodialysis prescriptions built for real-world practice.
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Uses the patient's own dataFluid status, labs, access and clinical context for an individualized prescription.
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Evidence-based and standardizedAligned with current guidelines and best practice.
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Built-in safety checksAlerts for fluid, electrolytes, anticoagulation and access-related risks.
HDscript
Hemodialysis clinical decision support
Final prescription responsibility rests with the treating nephrologist.
At least 8 characters. Use something not used elsewhere.
Type the code from the authenticator app on your phone
Who they are
Centers this account can open
More than one chosen: they pick a center after signing in, like master does.
Permissions (master only)
Sign-in
Changes to this account
From the audit log — every change here is recorded with who made it.
Add new center
Short code, no spaces. Cannot be changed later. For a chain, its letters and a number: APL-001, APL-002.
Clinical decision support tool. Final prescription responsibility rests with the treating nephrologist.
Patient
Patient ID
Filled in automatically. Change it only if this center uses its own numbering.
Full name
Demographics
Age at registration
years
Sex
Dialysis start date
The full date, the month and year, or the year alone.
/, - and . all work as the separator.Clinical baseline
Dry weight
kg
Dialysis frequency
Vascular access type
Heart failure
Yes
No
On oral anticoagulant (OAC)?
No unless the patient takes one — it can be changed at any session.
Yes
No
Dialyzer and reuse
Dialyzer
Decides the base heparin dose — reuse carries a higher base in every weight tier.
Single use
Reuse
Session history
Patient settings
Saved to the patient details as soon as you press Save.
Frequency
Twice weekly
Thrice weekly
Heart failure
Yes
No
On oral anticoagulant (OAC)?
Yes
No
Dialyzer
Single use
Reuse
Max
Orders for the next session
Each box and tile starts at what is running now. Any edit made to a box or tile is a manual override, even if the same number is typed again, and it becomes an order for the next session. Typing in a box releases its freeze; it can be frozen again.
Dry weight
kg
Freeze
UF free
Set UF free
Needle gauge
17G
16G
15G
Blood flow (Qb)
mL/min
Freeze
Duration
h:mm
Freeze
Heparin dose
mL
Freeze
Heparin stop time
min
Freeze
Dialysate sodium
mEq/L
Freeze
Profile
Off
DDS
Sodium · DDS
±mEq/L
Hypovolemia — choose one
Sodium / UF
Sodium + UF
±mEq/L
Low sodium dialysate
Off
mEq/L
Low sodium dialysate
Dialysate temperature
Off
−0.5 °C
−1.0 °C
Levocarnitine
Off
Levocarnitine
25% Dextrose
Off
25% Dextrose
Hypertonic agents
Off
3% Saline
20% Mannitol
What will happen
Acute pulmonary edema
Activate if patient presents with severe respiratory distress at rest
Inactive
Pre-session data
kg — before this session
mL — blood or IV drugs
mmHg
systolic / diastolic
°F
before session start
mEq/L
×10³/µL
can the session extend?
Volume overload — since previous session
Leg swelling
Breathlessness
Cough on lying
Uncontrolled BP
Hypovolemic symptoms — since previous session
Hypotension (SBP<100)
Nausea / vomiting
Muscle cramps
Post-dialysis fatigue
BP medications before dialysis ● REQUIRED
Taken before HD
Not taken before HD
Blood flow (Qb)
Blood flow issues — since previous session
Low arterial pressure
High venous pressure
Headache
Confusion / DDS
+ Override blood flow rate (optional)
mL/min
Sets this session's blood flow directly. Later sessions start from it; a value above the needle's recommended flow applies to this session only.
Dialysate flow rate (Qd) — machine type
Autoflow — Yes
Autoflow — No
Session duration
Previous session: —
+ Override duration (optional)
h:mm
Sets this session's duration directly. Duration below 3 or above 4 hours is set for this session only, unless frozen.
min
L
Duration and volume for an isolated-UF phase.
Anticoagulation
Single use
Reuse
Bleeding & clotting issues
Systemic bleed
Prolonged AVF bleed
Recent surgery
Circuit clot
+ Override anticoagulation (optional)
mL
Enter as 4-hour session equivalent — e.g. 1 mL drawn (5,000 U): 1500 U bolus + 1000 U/hr infusion for 3 h 30 m. Override is used directly; chip adjustments do not apply.
min before end
Minutes to stop heparin before session end. Overrides the default (30 min) and any bleed-related early stop.
On oral anticoagulant (OAC)?
Yes
No
Profile and interventions
+ Override interventions (optional)
Switch on to take control of an intervention; switch off to stop one the app is running.
mEq/L
Within ± 2 mEq/L of the app’s value, later sessions keep it. Beyond ± 2, it is this session only. Freeze keeps it every session.
Low sodium dialysate
Off
Low sodium dialysate
mEq/L
Flat — leave blank for the app's value.
Profile
Off
Profile
DDS
Sodium · DDS
±mEq/L
Hypovolemia — choose one
Sodium / UF
Sodium + UF
±mEq/L
Spread (±): the same value in both boxes — changing one changes the other. Leave blank for the app's value.
Hypertonic agents
Off
Hypertonic agents
3% Saline
20% Mannitol
Low dialysate temperature
Off
Dialysate temperature
−0.5 °C
−1.0 °C
Levocarnitine
Off
Levocarnitine
25% Dextrose
Off
25% Dextrose
Random blood sugar ● REQUIRED
mg/dL
Read-only view of a saved session · Final prescription responsibility rests with the treating nephrologist.