ng ck, o wh, lit mpk, lee kh, chan hf, chan yc, cheung yf, hui … · 2013. 5. 24. · hmv clinic...
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Dr. CK NG
Department of Medicine
Queen Elizabeth Hospital
Kowloon Central Cluster
Ng CK, O WH, Lit MPK, Lee KH, Chan HF, Chan YC, Cheung YF,
Hui YT, Chu S, Chong HM, Yu David, Chan JHM and Chan JWM
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Shneerson JM. Eur Respir J 2002; 20: 480–487
Neuromuscular Diseases (NMD)
Rapidly progressive
• Motor neuron disease/ ALS
Variable progression
• DMD • Limb girdle MD • Myopathies
• Nemaline • Metabolic
• Merosin negative congential dystrophy
Slowly progressive or non- progressive
• Previous poliomyelitis • Facio-scapulo-humeral
MD • Type III SMA • Central hypoventilation • Spinal cord injury
Pulmonary complications and respiratory failure account for 84% of death
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• Unplanned intubation and ventilation
• Prolonged hospital stay
• Excessive death
• Different expectations between relatives and staff
• Conflicts between relatives and staff
• Long term ventilation plan
• Priming and palliative care plan
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Multi-disciplinary home ventilation
programme
Pulmonologists
Palliative care
physicians
ENT surgeons
Respiratory
nurses
Physiotherapists
Gastroenterologists
Neurologists
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Reduce unplanned intubations and
mechanical ventilations
Assist and prepare patients and carers to prepare for
HMV before onset of respiratory failure
Regular and comprehensive monitoring
of disease progressions
Regular assessment of complications associated and compliance to ventilation
Provide advance care planning and
palliative care if necessary
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Early referral of NMD patients to HMV
clinic by neurologist
(before onset of respiratory failure)
Respiratory failure
Refuse home ventilation
Palliative care team
Respiratory failure
Accept home ventilation
Pulmonologist for
NIV or T-IPPV
Respiratory nurse for
education
Regular assessment for compliance,
complications and disease progression
Gastroenterologist
for PEG feeding
ENT surgeon for
tracheostomy
Physiotherapist,
occupational therapist,
and social workers
Not yet respiratory
failure
Priming for possible
development of
respiratory failure
Regular monitoring (symptoms
and physiology) with
neurologist
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All consecutive patients that
were recruited prospectively
to the program since 2007
were included
Data were retrieved from
hospital records and analyzed
with SPSS software
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39 NMD patients attended the HMV programme since service establishment
Baseline Demographics NMD Patients
(n=39)
Age [years] 56.13 ± 16.59
Male Sex [number (%)] 24 (61.5)
Smoking history [number(%)] 8 (20.5)
Underlying NMD [number %)]
• MND
• DMD/SMA
• Critical illness neuropathy
• Others
28 (71.8)
3 (7.7)
2 (5.1)
6 (15.4)
Bulbar symptoms [number (%)] 17 (43.6)
Riluzole tried [number (%)] 10 (25.6)
Co-morbidities [number (%)] 16 (41.0)
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•Ventilated before HMV clinic assessment= 12/12
(100%)
•Ventilated despite HMV clinic assessment = 4/8
(50%) (p= 0.014)
Unplanned intubation
and ventilation
• Before HMV clinic assessment = 4/12 (33.3%)
• After HMV clinic assessment = 6/8 (75.0%)
(p= 0.17)
Early use of non- invasive ventilation
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Number of patients
Crude mortality rate [number (%)] 21 (53.8%)
Causes of mortality [number (%)]
Respiratory failure ± pneumonia
Aspiration pneumonia
Upper GI tract bleeding
Acute myocardial infarction
Stroke
Intestinal obstruction
13 (61.9)
3 (14.3)
2 (9.4)
1 (4.8)
1 (4.8)
1 (4.8)
Disease-specific mortality [number (%)]
MND
Critical illness neuropathy
DMD/SMA
19 (90.5)
2 (9.5)
0 (0)
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Ventilated group
n= 20
Non ventilated group
n= 10
Difference
(Log rank test)
Medians survival (months) 31.5 (IQR 16.4-84.7) 4.6 (IQR 2.8- 11.9) 0.005
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• Complications associated with HMV were usually minor
and related mostly to face masks or tracheostomy wound
Complications [Number (%)] Frequency
n=20
Mask interface 4 (20)
Pressure sores 5 (25)
Dry mouth 2 (10)
Machine breakdown 0(0)
Tracheostomy related 5 (25)
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agreed ventilation care plan in case of
deterioratn are listed for easy reference
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29 new cases after service set up
26 assessed at HMV clinic
18 had NEWLY developed respiratory
failure
9 opted for ventilation
6 ventilated 3 not ventilated
9 refused ventilation
2 ventilated 7 not ventilated
8 had NOT developed respiratory failure
3 patients ventilated before
assessment
Compliance to planning
= 13/18 (72.2%)
Priming and education on
HMV were offered to all
patients by pulmonologists
and respiratory nurses.
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• To prevent aspiration and provide
nutritional support
• PEG feeding was successfully initiated
in 14(70%) of the ventilated patients
by gastroenterologist.
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1
• Home ventilation service significantly reduced unplanned intubations and invasive mechanical ventilation
2 • Improved survival in those with appropriate ventilation support
3 • Patients were primed & closely monitored before development of ARF
4 • Optimize feeding with PEG
5
• Enhanced monitoring on compliance, complications and disease progressions
6 • Provision of palliative care
Key to success is
Multi-disciplinary
engagement and
seamless
collaboration
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Department of Medicine
• Dr. John HM Chan (Neurology)
• Dr. Johnny WM Chan (Pulmonology)
• Dr. W H O (Pulmonology)
• Dr. YF Cheung (Neurology)
• Dr. YT Hui (Gastroenterology)
• Dr. HF Chan (Neurology)
• Dr. YC Chan (Neurology)
• Dr. Stephanie Chu (Palliative Medicine)
• Ms. Maggie PK Lit (Respiratory APN)
• Ms. KH Lee (Respiratory APN)
Department of ENT
• Dr. HM Chong
Department of
Physiotherapy
• Mr. David Yu