Ambu Oval Plus, Instructions For Use Manual

Page: 10 / 220

10
Patient use
- Clear the patient’s mouth and airway using recommended techniques.
Use recommended techniques to position the patient correctly to open
the airway and to hold the mask firmly against the face. (2.1)
- Slide you hand (Adult Version) or ring and middle finger (Paediatric version)
under the support strap. The infant version does not have a support strap.
Ventilation without using the support strap can be achieved by turning
the bag. (2.2)
- Ventilate the patient. During insufflation observe the rise of the patient’s chest.
Release the bag abruptly and listen for the expiratory flow from the patient
valve and observe lowering of the chest.
- If continued resistance to insufflation is encountered, check the airway for
obstruction or correct the backward tilt of the head.
- If the patient vomits during mask ventilation, immediately clear the patient’s
airway and then freely compress the bag a few times before resuming ventilation.
- The patient valve may be disassembles and cleaned if excessive amount of
vomitus are obstructing the air flow. For details review the cleaning section of
this manual.
5.2 Manometer port

WARNING
Use only for monitoring pressure. The cap must always be put on the connector
when pressure is not being monitored.
A pressure gauge can be connected to the manometer port on the top of
the patient valve. (This only applies to the version with manometer port).
Remove the cap (3.1) and connect pressure manometer or the tube for
the pressure gauge (3.2).
5.3 Pressure limitation system

WARNING
Never override the pressure-limiting valve (if available) unless medical and
professional assessment indicates the necessity. High ventilation pressures
may cause lung rupture to certain patients. If the pressure-limiting valve is
overridden in patients with a bodyweight less than 10 kg (22 lbs.), a manometer
must be used to monitor the ventilation pressure to avoid the possibility of a
lung rupture.
If the resuscitator is equipped with a pressure limiting valve, the valve is set to
open at 40 cm H
2
O (4.0kPa) (4.1).
If medical and professional assessment indicates a pressure above 40 cm H
2
O is
required pressure limiting valve can be overridden by pressing the override cap
onto the valve (4.2). Alternatively the pressure limiting valve can be overwritten by
placing the index finger on the blue button while squeezing the bag.
6. Oxygen administration
Administer Oxygen according to medical indication.
Examples of O
2
percentages, which can be obtained with different volumes and
frequencies, can be seen in

. Adult (5.1), Pediatric (5.2), Infant (5.3).
VT: Ventilation volume, f: Frequency
Note: If high ventilation pressure is used, a higher O
2
flow settings is needed
because part of the stroke volume is vented from the pressure-limiting valve.
For infant version, use of supplementary Oxygen without reservoir attached will
limit the oxygen concentration to 60-80 % at 15 L/min.