2020
Physiologic heart rate dependency of the PQ interval and its sex differences
TOMAN, Ondřej, Kateřina HNÁTKOVÁ, Peter SMETANA, Katharina M. HUSTER, Martina ŠIŠÁKOVÁ et. al.Základní údaje
Originální název
Physiologic heart rate dependency of the PQ interval and its sex differences
Autoři
TOMAN, Ondřej (203 Česká republika, domácí), Kateřina HNÁTKOVÁ (203 Česká republika), Peter SMETANA (620 Portugalsko), Katharina M. HUSTER (276 Německo), Martina ŠIŠÁKOVÁ (203 Česká republika, domácí), Petra BARTHEL (276 Německo), Tomáš NOVOTNÝ (203 Česká republika, domácí), Georg SCHMIDT (276 Německo) a Marek MALÍK (203 Česká republika, garant)
Vydání
Scientific Reports, London, Nature Publishing Group, 2020, 2045-2322
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
30201 Cardiac and Cardiovascular systems
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 4.379
Kód RIV
RIV/00216224:14110/20:00116357
Organizační jednotka
Lékařská fakulta
UT WoS
000562888500027
Klíčová slova anglicky
physiologic heart rate dependency; PQ interval; sex differences
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 10. 9. 2020 09:11, Mgr. Tereza Miškechová
Anotace
V originále
On standard electrocardiogram (ECG) PQ interval is known to be moderately heart rate dependent, but no physiologic details of this dependency have been established. At the same time, PQ dynamics is a clear candidate for non-invasive assessment of atrial abnormalities including the risk of atrial fibrillation. We studied PQ heart rate dependency in 599 healthy subjects (aged 33.5 +/- 9.3 years, 288 females) in whom drug-free day-time 12-lead ECG Holters were available. Of these, 752,517 ECG samples were selected (1256 +/- 244 per subject) to measure PQ and QT intervals and P wave durations. For each measured ECG sample, 5-minute history of preceding cardiac cycles was also obtained. Although less rate dependent than the QT intervals (36 +/- 19% of linear slopes), PQ intervals were found to be dependent on underlying cycle length in a highly curvilinear fashion with the dependency significantly more curved in females compared to males. The PQ interval also responded to the heart rate changes with a delay which was highly sex dependent (95% adaptation in females and males after 114.9 +/- 81.1 vs 65.4 +/- 64.3 seconds, respectively, p < 0.00001). P wave duration was even less rate dependent than the PQ interval (9 +/- 10% of linear QT/RR slopes). Rate corrected P wave duration was marginally but significantly shorter in females than in males (106.8 +/- 8.4 vs 110.2 +/- 7.9 ms, p < 0.00001). In addition to establishing physiologic standards, the study suggests that the curvatures and adaptation delay of the PQ/cycle-length dependency should be included in future non-invasive studies of atrial depolarizations.