Anaesthesia of myotonia congenita Becker

A patient comes for preoperative examination for planned arthroscopy to your consulting room. According to his personal history he suffers from myotonia congenita Becker and a hiatal hernia. What will be your next step?
We will proceed with usual preoperative examination.
We will consult the preoperative examination with a gastroenterologist.
Examination by a neurologist should be a part of the preoperative examination.
45
years
182
cm
87
kg
man
RR
12 /min
HR
70 /min
SpO2
98 %
BP
120/73 (89) mmHg
EKG
rythm: sinus
action: regular
Examination
TT: 19 s
Glycaemia
Gly
4,2  mmol/L
Complete blood count
HGB
155  g/L
HTC
0,43
ERC
4,5  x1012/L
LEU
6,3  x109/L
PLT
330  x109/L
Coagulation
aPTT
27 s
PT
12,5 s
Biochemical analysis
Na
140  mmol/L
K
4,2  mmol/L
Cl
103  mmol/L
Mg
0,9  mmol/L
Ca
2,42  mmol/L
P
0,8  mmol/L
Glycaemia
Take a sample
Complete blood count
Take a sample
Coagulation
Take a sample
Biochemical analysis
Take a sample