Grand Sumo Tournaments and Out‐of‐Hospital Cardiac Arrests in Tokyo

Abstract

BackgroundSumo wrestling is a demanding sport. Although watching sumo wrestling may have cardiovascular effects, no studies of this relationship have been performed. Thus, we aimed to evaluate the association between sumo wrestling tournaments and the rate of out‐of‐hospital cardiac arrests.Methods and ResultsWe counted the daily number of patients aged 18 to 110 years who had an out‐of‐hospital cardiac arrest of presumed‐cardiac origin in the Tokyo metropolis between 2005 and 2014. A Poisson regression was used to model out‐of‐hospital cardiac arrests of presumed‐cardiac origin per day. Exposure days were the days on which a sumo tournament was held and broadcast, whereas control days were all other days. Events that occurred on exposure days were compared with those that occurred on control days. Risk ratios for out‐of‐hospital cardiac arrests on Grand Sumo tournaments days compared with control days were estimated. In total, 71 882 out‐of‐hospital cardiac arrests met the inclusion criteria. We recorded a 9% increase in the occurrence of out‐of‐hospital cardiac arrests on the day of a sumo tournament compared with control days. In patients aged 75 to 110 years, we found a 13% increase in the occurrence of out‐of‐hospital cardiac arrests on the day of a sumo tournament compared with control days.ConclusionsWe found a significant increase in the occurrence of out‐of‐hospital cardiac arrests on the days of sumo tournaments compared with control days in the Tokyo metropolis between 2005 and 2014. Further studies are needed to verify these initial findings on sumo tournaments and cardiovascular events.

Long-term course of phrenic nerve injury after cryoballoon ablation of atrial fibrillation

“…This is consistent with previous reports 1 , 4 , 5 , 14 , 15 . However, this rate was higher than that in recent studies reporting on data obtained using contemporary techniques 11 , 16 , 17 . The incidence of PNP can be decreased by increased operator experience to avoid deep seating of the cryoballoon in PV, and improved techniques that allow the early detection of PNP.…”

“…The PN runs in front of the distal right PV; thus, cooling at a deeper position increases the risk of PNP 4 . In previous studies, the distance from the RSPV ostium to the right peri-cardiophrenic bundles 15 , the larger RSPV ostial area 5 , 11 and the external RSPV-left atrium angle 5 were predictors of PNP during cryoballoon PVI. In this study, the time to − 30 °C, time to − 40 °C and the nadir balloon temperature did not differ to a statistically significant extent and the PV size and length of the PV trunk measured by preoperative CT did not differ between the two groups to a statistically significant extent.…”

“…The durability of PV isolation was lower for PVs with earlier double stop due to CMAP reduction. A previous study showed 50% of RSPVs were reconnected during the second procedure 11 . They also conclude that 1-min freezes seem to be insufficient, however, 2-min freezes might be sufficient to obtain good durability.…”

“…To avoid phrenic nerve injury, the diaphragmatic compound motor action potentials (CMAPs) were monitored during right phrenic nerve pacing, as previously described 6 , 11 , 12 . A standard decapolar catheter or a circumferential 20-pole catheter was placed in the superior vena cava (SVC) cranial to the RSPV in order to pace the PN, in recent cases, the circular catheter was generally positioned in the subclavian vein in order to achieve better stability and a more reliable PN capture in comparison to the SVC.…”

It is not just a game. Do soccer matches affect cardiovascular events?

“…Some single studies analyzing the influence of individual sports are also available. In a study on sumo wrestling, the national Japanese sport, a 9% increase in the occurrence of out-of-hospital cardiac arrests was noted on the tournament day, and in the case of patients aged over 75 years, there was a 13% increase compared to the control days [28].…”