Olympus BF-P190 Instructions Manual page 58

4.1 Warnings and cautions: operation
Ch.4
52
WARNING
• Transnasal insertion is accompanied by the risk of bleeding in the nasal cavity. Be
sure to be prepared to deal with any bleeding. When withdrawing the endoscope,
observe the inside of the nasal cavity to ensure that there is no bleeding. Even
when the endoscope has been withdrawn without bleeding, do not allow the patient
to blow his or her nose strongly because this could cause it to start bleeding.
• Before transnasal insertion, apply the appropriate pretreatment and lubrication to
the patient to enlarge the nasal cavity. Otherwise, patient injury can result or the
endoscope could become lodged and be difficult to withdraw. When applying a
pretreatment agent through a tube, insert the tube into the same path as the path
planned for the endoscope's insertion. Otherwise, the treatment will have no effect.
The effects of the pretreatment agent and lubricant will decrease as the procedure
lasts longer. Apply the pretreatment agent or lubricant as required during the
procedure – for example, when withdrawal seems to be difficult.
• If any of the following conditions occur during an examination, immediately stop the
examination and withdraw the endoscope from the patient as described in
Section 5.3, "Withdrawal of the endoscope with an irregularity".
 If any irregularity is observed with the functionality of the endoscope.
 If the endoscopic image on the monitor disappears or freezes unexpectedly.
 If the endoscopic image on the monitor appears blurry or foggy unexpectedly.
 If the angulation control lever does not move.
 If the angulation control mechanism is not functioning properly.
Continued use of the endoscope under these conditions could result in patient
injury, bleeding, and/or perforation.
• If an abnormal endoscopic image appears or an abnormal function occurs but
quickly corrects itself, the endoscope may have malfunctioned. In this case, stop
using the endoscope because the irregularity can occur again and the endoscope
may not return to its normal condition. Stop the examination immediately and
slowly withdraw the endoscope while viewing the endoscopic image. Otherwise,
patient injury, bleeding, and/or perforation can result.
• The endoscopic image may be disturbed while switching between WLI observation
mode and NBI observation mode. Therefore, do not perform any endoscopic
operation or treatment while switching between WLI observation mode and NBI
observation mode. Injury in the body cavity may result.
• Turn the video system center ON to operate the light source's automatic brightness
function. When the video system center is OFF, it cannot operate the light source's
automatic brightness function, and the light intensity may be set to the maximum
level. In this case, the distal end of the endoscope can become hot and could
cause operator and/or patient burns.
BF-190 Series OPERATION MANUAL