Table I.
Clinical data of apogeotropic posterior canal BPPV patients.
| Patient # | Sex | Age | Right dh nystagmus | Sitting Nystagmus | Left dh nystagmus | Sitting Nystagmus | S-HH-P nystagmus | Diagnosis | Therapeutic manoeuvre | Nr MANs | Outcome | Diagnostic grade |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | F | 50 | CW +++ | CCW+ | CCW++ | CCW++ | CW ++++ | Left APC | QLR from left to right | 2 | Left TPC | Certain |
| 2 | M | 42 | - | - | CCW ++ DB+ |
- | - | Left APC | QLR from left to right | 1 | Left TPC | Certain |
| 3 | M | 48 | CW ++ | - | CCW++ | - | - | Right APC | QLR from right to left | 1 | Right TPC | Certain |
| 4 | M | 43 | CW +++ | - | CCW++ | - | - | Right APC | QLR from right to left | 1 | Right TPC | Certain |
| 5 | M | 60 | CCW++ | CW++ | CCW++ | CW ++ | CCW+ DB+ |
Left APC | QLR from left to right | 2 | Left TPC | Certain |
| 6 | M | 65 | CCW++ | CW + | CCW+ | CW +++ | CCW+ | Left APC | QLR from left to right | 3 | Left TPC | Certain |
| 7 | M | 54 | - | - | CCW++++ DB++ |
CW++++ | DB+++ | Left APC | QLR from left to right | 2 | Left TPC | Certain |
| 8 | M | 40 | CCW + | - | CCW++ | - | DB+ | Left APC | QLR from left to right | 2 | Left TPC | Certain |
| 9 | M | 43 | CW + | - | CW+ | - | - | Right APC | QLR from right to left | 1 | Right TPC | Certain |
| 10 | F | 70 | CW++ | - | CW++ | - | CW ++ | Right APC | QLR from right to left | 3 | Right TPC | Certain |
| 11 | F | 61 | CW ++ DB ++ |
- | CW ++ DB+ |
- | CW ++ DB+ |
Right APC | QLR from right to left | 1 | Right TPC | Certain |
| 12 | F | 62 | CW ++++ DB+++ |
- | CW +++ DB++ |
- | CW + DB ++ |
Right APC | QLR from right to left | 5 | Right TPC | Certain |
| 13 | M | 60 | CCW+++ DB + |
- | CCW++ DB+ |
- | CCW+++ DB+ |
Left APC | QLR from left to right | 2 | Left TPC | Certain |
| 14 | F | 64 | CW + DB+ |
CW+ | CW++ DB++ |
CW++ DB+ |
CW++ DB+ |
Right APC | QLR from right to left | 1 | Right TPC | Certain |
| 15 | M | 66 | CW ++ | - | CW ++ | - | - | Right APC | QLR from right to left | 2 | Direct resolution |
Probable |
| 16 | F | 30 | CW ++ DB++ |
- | CW + | - | CW + | Right APC | QLR from right to left | 1 | Direct resolution |
Probable |
| 17 | F | 51 | CCW ++ | CW+++ | CCW + | - | - | Left APC | QLR from left to right | 2 | Direct resolution |
Probable |
| 18 | F | 60 | CW + DB + |
CCW+ | CW + | - | - | Right APC | QLR from right to left | 2 | Direct resolution |
Probable |
| 19 | M | 59 | CCW ++ | - | CCW + | - | CW ++ DB+ |
Left APC | QLR from left to right | 1 | Direct resolution |
Pprobable |
| 20 | M | 52 | CCW+ | - | CCW++ | - | CCW+ | Left APC | QLR from left to right | 2 | Direct resolution |
Probable |
| 21 | F | 45 | CCW++ DB + |
- | CCW++ DB + |
CCW++ DB + |
CCW++ DB + |
Left APC | QLR from left to right | 3 | Direct resolution |
Probable |
| 22 | F | 55 | CCW+++ DB+ |
CCW+ | CCW+++ DB+ |
CCW+ | CCW+++ DB++ |
Left APC | QLR from left to right | 1 | Direct resolution |
Probable |
| 23 | F | 34 | - | - | CCW++ | CW +++ | CCW++ | Left APC | QLR from right to left | 2 | Lost to follow-up |
Possible |
Legend: DH: Dix-Hallpike positioning test; S-HH-P: Straight Head Hanging Positioning test; Nr Mans: Number of manoeuvres; F: Female; M: Male; CW: Clockwise; CCW: Counter-clockwise; DB: Down-beating; APC: Apogeotropic Posterior Canal BPPV; QLR: Quick Liberatory Rotation Manoeuvre; TPC: Typical Posterior Canal BPPV; Grading of Nystagmus: from + (the least) to +++++ (the greatest)