7
If proper attachment is not achieved, the voice prosthesis
may come loose from Provox GuideWire, causing failure to
complete the procedure.
• DO NOT load or reload the voice prosthesis if the safety strap
has been cut off or is broken.
1.6 Adverse events and troubleshooting
information
Aspiration of parts of Provox GuideWire or parts of Provox
System – Accidental aspiration of parts of Provox GuideWire
or parts of Provox System may occur. As with any other foreign
body, complications from aspiration of a component may cause
obstruction or infection. Immediate symptoms may include
coughing, wheezing or other abnormal breathing sounds, dyspnea,
and respiratory arrest, partial or inadequate air exchange and/or
asymmetrical chest movement with respiration. Complications
may include pneumonia, atelectasis, bronchitis, lung abscess,
bronchopulmonary fistula and asthma. If the patient can breathe,
coughing may remove the foreign body. Partial airway obstruction
or complete airway obstruction requires immediate intervention
for removal of the object. If aspiration of the object is suspected,
the object should be located and retrieved endoscopically using a
non-toothed grasping forceps.
Ingestion of parts of Provox GuideWire or parts of Provox
System – Accidental ingestion of parts of Provox GuideWire or
parts of Provox System may occur. As with any other foreign body,
the symptoms caused by ingestion of parts of Provox GuideWire
or parts of Provox System, depend largely on size, location, degree
of obstruction (if any) and the length of time it has been present.
Ingested components that have remained in the esophagus may
be removed by esophagoscopy or observed for a short period of
time. The object may pass spontaneously into the stomach. Foreign
bodies that pass into the stomach usually pass through the intestinal
tract. Surgical removal of foreign bodies from the intestinal tract
must be considered when bowel obstruction occurs, bleeding is
present, perforation occurs, or the object fails to pass through the
intestinal tract.
Spontaneous passage of the object may be awaited for 4-6 days.
The patient should be instructed to observe the stools for the
ingested object. If the object does not pass spontaneously, or if
there are signs of obstruction (fever, vomiting, abdominal pain) a
gastroenterologist should be consulted. The device may be retrieved
by using a non-toothed grasping forceps.
Provox GuideWire gets stuck in the pharyngeal mucosal
wall – Provox GuideWire may get stuck in or be interfered by the
pharyngeal mucosal wall. With slight pressure, Provox GuideWire
will generally bend near the tip and slide upwards towards the
pharynx. Stop the procedure if the general bending does not help.
Hemorrhage/Bleeding of the puncture – Slight bleeding from
the edges of the tracheoesophageal (TE) puncture may occur
during intended use of Provox GuideWire and generally resolves
spontaneously. Patients on anti-coagulant therapy, however, should
be carefully evaluated for the risk of hemorrhage.
Rupture of the tracheoesophageal tissue – In case of a rupture
of the TE tissue the TE puncture procedure should be abandoned,
and the rupture should be sutured immediately. TE puncture should
only be repeated after proper healing of the tissues.
Provox GuideWire gets stuck inside the esophagus – If Provox
GuideWire gets stuck inside the esophagus, do not use excessive
force. Attempts to pull out a stuck Proxo GuideWire may cause
tissue damage and/or breaking Provox GuideWire. The device has
to be retrieved with an endoscope.