OB-GYN and maternity clinic software with a real antenatal case sheet
Avinya Plus is configurable OB-GYN and maternity clinic software. It ships a real antenatal case sheet: LMP capture with a who-and-when audit trail, EDD by Naegele's rule (LMP + 280 days), live gestational age and trimester, G-P-A-L, and Rh-negative prompts surfaced in the consult. The case sheet is off by default and enabled per clinic; we don't claim obstetric expertise.
Antenatal care lives across a register, a due-date wheel, and a scan file
Run a maternity practice and one mother's pregnancy is scattered everywhere. The LMP sits in a paper register, the due date gets spun on a plastic wheel and copied wrong, gestational age is recounted by hand at every visit, and the Rh-negative status hides on a lab report nobody re-reads. Weight gain is a column of numbers with no band to judge it against. Most EMRs were built for a single walk-in visit, not a pregnancy that has to be read as one continuous story across a dozen antenatal visits. You need LMP, dating, history, Rh, and weight gain in one sheet that recomputes itself, and the whole pregnancy on one timeline.
Built for how clinics actually work.
LMP capture with a built-in audit trail
The antenatal case sheet captures Last Menstrual Period as a real dated field with a Certain/Uncertain toggle, and every LMP entry stamps who recorded it and when. An out-of-range LMP (in the future, or more than 42 weeks / 294 days ago) raises a 'please verify' warning instead of silently dating a pregnancy wrong. Mark the LMP uncertain and the sheet flags the EDD as an estimate and nudges first-trimester ultrasound dating.
EDD by Naegele's rule and live gestational age
Enter the LMP and the sheet computes the estimated due date as LMP + 280 days (Naegele's rule), the same way every time, with no plastic wheel. It also shows a due-date window of 39–41 weeks (LMP + 273 to + 287 days), live gestational age as weeks-and-days (for example 28w 3d), and the trimester. Gestational age recomputes against today's date, so it's right at every visit without anyone counting.
Rh-negative and rule-based prompts, surfaced — never deciding for you
If the patient's blood type is Rh-negative, the sheet raises an Rh− flag so it isn't missed at an antenatal visit. From data already on the sheet it surfaces rule-based prompts: adolescent pregnancy (under 18), advanced maternal age (35+, very-advanced 40+), grand multiparity (para 5+), and recurrent pregnancy loss (3+), each with a one-line rationale drawn from widely-taught definitions. These prompts are derived and never persisted, and the clinician's own 'flag high-risk' switch is stored separately as judgement. The sheet assists documentation; it is not clinical decision support.
Maternal weight-gain tracking against the IOM band
Enter pre-pregnancy weight and height once and the sheet plots cumulative weight gain over gestational age against the recommended IOM 2009 band for that BMI category (for a normal-BMI singleton, 11.5–16 kg total). Current weight is read from recorded vitals, not re-typed; each visit lands as a point on the chart, and the headline reads on, below, or above target. An implausible entry (a net loss beyond 5 kg or a gain beyond 40 kg) asks you to verify the pre-pregnancy weight, and an above-target trend is flagged for you to review.
The whole pregnancy on one timeline, and pregnancy status on the hub
The case sheet is part of the consultation workflow, so LMP, dating, history, Rh, and weight gain attach to each antenatal visit and sit with that mother's scans, labs, and prescriptions on one date-ordered record. A Pregnancy card on the patient hub surfaces the latest snapshot (trimester, gestational age, EDD, G-P-A-L, and Rh) so anyone on the team sees pregnancy context before opening a consult. It appears only once an LMP is recorded.
Off by default, enabled per clinic: honest and configurable
Avinya Plus is a generic, configurable platform. The OB-GYN case sheet is a real shipped feature that's off by default and turns on per clinic: automatically for clinics registered as Obstetrics & Gynecology or Reproductive Medicine, or toggled on in Settings by a user with feature-management permission. The risk thresholds use widely-taught obstetric definitions, not proprietary clinical expertise; the tool assists documentation, the clinician decides. Underneath sits the same shared platform: GST invoicing, appointments, role-based access.
At a glance
- The antenatal case sheet computes EDD as LMP + 280 days (Naegele's rule), a 39–41-week due-date window, gestational age in weeks-and-days, and trimester, all recomputed against today's date.
- Every LMP entry stamps who recorded it and when; an LMP in the future or more than 42 weeks (294 days) ago raises a verify-this warning, and an Uncertain toggle marks the EDD an estimate.
- Rule-based prompts are derived and never persisted: adolescent pregnancy (<18), advanced maternal age (35+, very-advanced 40+), grand multiparity (para 5+), recurrent loss (3+). The clinician's manual high-risk flag is stored separately.
- Maternal weight gain is assessed against the IOM 2009 band by pre-pregnancy BMI (normal 11.5–16 kg total); current weight is read from recorded vitals, and a net loss beyond 5 kg or gain beyond 40 kg triggers a data-entry verification prompt.
- The OB-GYN case sheet ships off by default and enables via specialty registration (Obstetrics & Gynecology or Reproductive Medicine) or a permissioned Settings toggle; it's one capability on a platform with 40+ configurable specialties.
See how it stacks up.
| Feature | Paper / Excel | Legacy EMR | Avinya Plus |
|---|---|---|---|
| LMP recorded with who-and-when audit trail | Paper register | Partial | Built-in |
| EDD by Naegele's rule (LMP + 280 days) | Due-date wheel | Partial | Yes |
| Live gestational age + trimester, recomputed each visit | Counted by hand | Partial | Yes |
| Rh-negative flag surfaced in the consult | Buried in lab report | No | Yes |
| Rule-based high-risk prompts (age, parity, prior loss) | From memory | No | Yes |
| Weight gain vs IOM band over gestation | Column of numbers | No | Yes |
| Whole pregnancy on one date-ordered timeline | Scattered files | Partial | Yes |
Questions, answered.
Does Avinya Plus actually compute EDD and gestational age, or is it a blank form?
It computes them. Enter the LMP and the antenatal case sheet calculates the estimated due date as LMP + 280 days (Naegele's rule), a due-date window of 39–41 weeks, live gestational age as weeks-and-days, and the trimester. Gestational age recomputes against today's date, so it's correct at every visit without anyone counting. Mark the LMP uncertain and the EDD is flagged an estimate with a nudge toward first-trimester ultrasound dating.
How does it handle Rh-negative and high-risk pregnancies?
If the blood type is Rh-negative, the case sheet raises an Rh− flag so it isn't missed at an antenatal visit. From data already on the sheet it surfaces high-risk prompts: adolescent pregnancy (under 18), advanced maternal age (35+, very-advanced 40+), grand multiparity (5+), and recurrent loss (3+), each with a short rationale from widely-taught definitions. These prompts assist documentation; they're never saved on their own, and the clinician's own high-risk flag is stored separately as judgement.
Is Avinya Plus an OB-GYN-specialist EMR?
No, and we won't pretend otherwise. Avinya Plus is a generic, configurable clinic platform. The OB-GYN case sheet is a real shipped feature that's off by default and enabled per clinic. The risk thresholds use widely-taught obstetric definitions, not proprietary clinical expertise; it assists documentation and is not clinical decision support. The platform assists; the clinician decides.
Can I track maternal weight gain properly?
Yes. Enter pre-pregnancy weight and height once and the sheet plots cumulative gain over gestational age against the IOM 2009 band for that pre-pregnancy BMI: for a normal-BMI singleton, 11.5–16 kg total. Current weight is read from recorded vitals, so each visit becomes a point on the chart and the headline reads on, below, or above target. An implausible entry (a net loss beyond 5 kg or a gain beyond 40 kg) asks you to verify the pre-pregnancy weight; an above-target trend is flagged for your review.
Where do all the antenatal visits end up?
In one place. The obstetric case sheet is part of the consultation, so LMP, dating, G-P-A-L, Rh, and weight gain attach to each antenatal visit and sit with that mother's scans, labs, and prescriptions on one date-ordered record. A Pregnancy card on the patient hub surfaces the latest snapshot (trimester, gestational age, EDD, G-P-A-L, Rh) so anyone on the team sees pregnancy context before opening a consult.
Does it cost extra, and who turns the OB-GYN feature on?
It's part of the platform and in early access. The OB-GYN case sheet ships off by default and enables automatically for clinics registered as Obstetrics & Gynecology or Reproductive Medicine; otherwise it's toggled on in Settings by a user with feature-management permission. The same login also runs GST invoicing, appointments, and role-based access, so maternity care and the rest of the clinic live in one tool.
Run your clinic on Avinya Plus.
Patient records, billing, and scheduling in one system your team will actually use.