Konventionelle und intrakardiale Elektrokardiographie

ECG abnormalities in myopathies, coronary heart disease and controls

“…PP-interval distinctly shorter than RR-interval, no fusion beats -Junctional ectopic beats [4,10]: premature QRS with preceding or following negative P in li, III and aV F or without P in > 10% of the recorded beats Junctional rhythm li0]: regular QRS with missing P of inverted P in II, lII and aVF, preceding or fo[lowing the QRS Alternans phenomenon [6]: constant PP]PRlPQ-interval, but changing S/ST/T-morphotogy from beat to beat WPW-syndrome [10]: PR-interval < 0.12 s, slurring of the QRS' upstroke or downstroke (+'delta wave") proIonging the QRS to > 0.ts LGL syndrome [10]: PR-interval < 0.12 s but normal QRS Simple AV-dissociation [6]: intermittently PP-interval stightty longer than RR-interval, intermittently inconstant PP/PR/RRinterval, positive P Complete AV-dissoeiation [6]: PP-interval permanently longer than RR-interval. varying PP/PR/RR-interval, no normally conducted P of fusion beats Incomplete AV-dissociation -interference dissociation [6]: like complete AV-dissociation but normally conducted sinus beats and fusion beats may occur Parasystolic beats [6]: regular ectopic ventricular beats without constant latency to the previous normal QRS, there is a constant interval of a multiple of it between the parasystolic beats, occasionalty, fusion beats may occur Ventricular ectopic beats [4,10]: premature, wide, notched or slurred QRS unpreceded by P in > 10% of the recorded beats Couplet …”

“…An explanation for the observation of a normal ECG but increased electrocardiographic myopathy indices in 6 healthy subjects might be Limitations of the study were the small group sizes, the lack of a neurologic examination in healthy subjects and patients with coronary heart disease and the lack of : heart rate > 100/ruin SA-block IIa [10]: progressive shortening of the PP-interval until a P fails to appear -SA-block IIb [10]: pauses without P, interval between P before and after the pause is a multiple of the normal PP-interval -SA-bloek III [10]: pauses without P, reappearanee of P not after a multiple of the normal PP-interval, subsidiary AV-pacemaker possible -Supraventricular ectopic beats [4,10]: premature P followed by a normal, aberrant or blocked QRS in > 10% of the recorded beats -Wandering atrial pacemaker [10]: varying P-morphology and PP/PR-interval but constant QRS/ST/T-morphology -Atrial tachycardia [10]: atrial tate of 160 to 220/min with either constant or varying P-morphology and/or PP/PR-interval -Atrial flutter [10]: at¡ rhythm with a tate of 260 to 320/min mostly combined with either regular of irregular AV-blocking, typical "sawtooth'" P in II, III and aV v -Atrial fibrillation [6]: missing P, fibrillation waves at a frequency o f 350 to 600/min mainly in V~ and either regular of irregular ventricular tate -AV-block I [61: PQ > 0.2 s -AV-block IIa [10]: cyclic progressive lengthening of the PR-interval until a P fails to appear -AV-block IIb [101: P not followed by a QRS in a regular or irregular sequence, for conducted P the PR-interval is consistent -AV-block III [10]: dissociated rhythmic of arrhythmic P and rhythmic QRS, the atrial rhythm may be sinus or any atrial arrhythmia. PP-interval distinctly shorter than RR-interval, no fusion beats -Junctional ectopic beats [4,10]: premature QRS with preceding or following negative P in li, III and aV F or without P in > 10% of the recorded beats Junctional rhythm li0]: regular QRS with missing P of inverted P in II, lII and aVF, preceding or fo[lowing the QRS Alternans phenomenon [6]: constant PP]PRlPQ-interval, but changing S/ST/T-morphotogy from beat to beat WPW-syndrome [10]: PR-interval < 0.12 s, slurring of the QRS' upstroke or downstroke (+'delta wave") proIonging the QRS to > 0.ts LGL syndrome [10]: PR-interval < 0.12 s but normal QRS Simple AV-dissociation [6]: intermittently PP-interval stightty longer than RR-interval, intermittently inconstant PP/PR/RRinterval, positive P Complete AV-dissoeiation [6]: PP-interval permanently longer than RR-interval. varying PP/PR/RR-interval, no normally conducted P of fusion beats Incomplete AV-dissociation -interference dissociation [6]...…”