Beds maternity ward
What is a bed on a maternity ward¶
A bed on a maternity ward is a hospital bed used for the ongoing care, treatment, recovery, and overnight stay of pregnant or postnatal patients admitted for maternity care.
Capacity outputs¶
- MATERNITY_WARD_BEDS
Conversion archetype¶
- bed occupancy — FRM_BED_OCCUPANCY
Operational constraint¶
- Continuous occupancy over 24-hour operational periods
Activity classification logic¶
Maternity birth spells typically consist of:
- prenatal admission
- time in delivery room or time in theatre (C-section)
- postnatal time in ward bed
All spells with a birth episode flag are categorised by type of delivery to one of four groups. Zero-day admissions require special treatment as these admissions don't generate overnight bed-days.
| Subgroup | Classification IDs |
|---|---|
| normal delivery | CLASS_MATERNITY, CLASS_BIRTH_EVENT, CLASS_BIRTH_NORMAL |
| assisted delivery | CLASS_MATERNITY, CLASS_BIRTH_EVENT, CLASS_BIRTH_ASSISTED |
| elective C-section | CLASS_MATERNITY, CLASS_BIRTH_EVENT, CLASS_BIRTH_ELECTIVE_C_SECTION |
| non-elective C-section | CLASS_MATERNITY, CLASS_BIRTH_EVENT, CLASS_BIRTH_NON_ELECTIVE_C_SECTION |
Also included are overnight spells on a maternity ward with no recorded birth event.
| Subgroup | Classification IDs |
|---|---|
| overnight no birth event | CLASS_MATERNITY, CLASS_NON_ZERO_LOS, CLASS_NO_BIRTH_EVENT |
Workload derivation¶
Primary workload unit: ward bed days
\[\text{zero day bed days} = \text{zero day spells} \times \frac{\text{zero day LOS hours}} {24}\]
\[\text{birth related ward bed days} = \text{birth spell overnight bed days} + \text{zero day bed days} - \text{birth room bed days}\]
\[\text{no birth ward bed days} = \text{no birth spell overnight bed days}\]
\[\text{total ward bed days} = \text{birth related ward bed days} + \text{no birth ward bed days}\]
Capacity conversion¶
\[\text{required maternity ward beds} = \frac{\text{total ward bed days}} {\text{annual operational days} \times \text{occupancy}}\]
Assumptions¶
| Subgroup | Assumption | Category | Assumption ID |
|---|---|---|---|
| normal delivery | zero day LOS | workload | MATERNITY_WARD_NORMAL_DELIVERY_ZERO_DAY_LOS |
| assisted delivery | zero day LOS | workload | MATERNITY_WARD_ASSISTED_DELIVERY_ZERO_DAY_LOS |
| elective C-section | zero day LOS | workload | MATERNITY_WARD_ELECTIVE_CSECTION_ZERO_DAY_LOS |
| non-elective C-section | zero day LOS | workload | MATERNITY_WARD_NON_ELECTIVE_C_SECTION_ZERO_DAY_LOS |
| all groups | occupancy | operational | MATERNITY_WARD_OCC |
| all groups | annual operational days | operational | MATERNITY_WARD_ANNUAL_OPERATIONAL_DAYS |
Known issues / limitations¶
- LDR/LDRP service models may alter the allocation of time between birthing rooms and maternity ward beds.
Dependencies¶
- Birth room bed-days are calculated in ROOMS_MATERNITY_BIRTH and deducted from birth-related maternity ward workload to avoid double-counting.