ライフサイエンスコーパス: pacing

1 ejection fraction <=40% during steady-state pacing.

2 left atrium simulated AF induction via rapid pacing.

3 ker-dependent patients received asynchronous pacing.

4 zyme types are necessary for circadian clock pacing.

5 ECG criteria for correction with His bundle pacing.

6 ter defibrillator shocks and antitachycardia pacing.

7 ic and enables drug testing under electrical pacing.

8 sensing and thresholds suited for temporary pacing.

9 g antegrade conduction with TBX18 biological pacing.

10 al model with reversible dyssynchrony due to pacing.

11 icular conduction, but these required atrial pacing.

12 an Africa, completely lack access to cardiac pacing.

13 ociated with an increased risk for permanent pacing.

14 lear-to-cytosolic HDAC4 shift caused by 3-Hz pacing.

15 ges and calcium transients during electrical pacing.

16 propagation with responsiveness to drugs and pacing.

17 has eluded translation is long-term cardiac pacing.

18 e likely to receive benefit from physiologic pacing.

19 lues leading to APD alternans under constant pacing.

20 polarization, demonstrated here for cardiac pacing.

21 g flush solution composition and transvenous pacing.

22 monstrated correction of QRS with His bundle pacing.

23 patients benefit from upfront biventricular pacing.

24 dle pacing, and endocardial left ventricular pacing.

25 options, with particular focus on His-bundle pacing.

26 ross the valve ring during rapid ventricular pacing.

27 plemented controls during physiological 1-Hz pacing.

28 inotropic agents, volume resuscitation, and pacing.

29 induced vasovagal syncope compared with sham pacing.

30 ronous ventricular activation with RV apical pacing.

31 least as good as during BiV and possibly HB pacing.

32 earts was observed when programmed to MPP-AS pacing.

33 g alternative modality for conduction system pacing.

34 AVRT circuits located away from the site of pacing.

35 ce showed increased SAN recovery times after pacing.

36 neurohormonal stimulation, but minimally by pacing.

37 loading induced by high-frequency electrical pacing.

38 iated from the circuit with atrial overdrive pacing.

39 VdP/dtmax were comparable between LVs and HB pacing.

40 ria of healthy dogs followed by rapid atrial pacing.

41 is usually performed by biventricular (BiV) pacing.

42 ization point with biventricular single-site pacing (0.0150+/-0.1725 in LVEDVI(>Median versus) -0.019

43 14 versus 0%; P=0.004), and need for chronic pacing (10% versus 0%; P=0.008).

44 respectively) and larger than during LVs+RV pacing (11 +/- 9%; p < 0.05).

45 4+/-11.0 cm(2), P<0.001) or left ventricular pacing (12.3+/-10.5 versus 17.1+/-10.7 cm(2), P<0.001).

46 uated using 5 separate 10 s bursts of atrial pacing (160-200 ms).

47 in LVdP/dtmax was similar during LVs and BiV pacing (17 +/- 10% vs. 17 +/- 9%, respectively) and larg

48 ac output by 20 +/- 8% compared to monotonic pacing (-3 +/- 5%; P < 0.05).

49 6+/-16.3 cm(2), P=0.003) or left ventricular pacing (31.7+/-18.5 versus 27.0+/-19.2 cm(2), P=0.009);

50 r conduction defect 5, and right ventricular pacing 5) referred for CRT in addition to LV lead.

51 ng could be acutely reverted by right atrial pacing (AAI) only.

52 Our study suggests that turning off CRT pacing after LVAD implantation in patients with previous

53 Pacing, agitated locomotion, and stress-related displace

54 127.5) seconds for FFR-guided rate-adaptive pacing and 3.1 (95% CI, -44.1 to 50.3) seconds for conve

55 ures, 188 received biventricular single-site pacing and 43 received MPP-AS.

56 battery life reset to ventricular inhibited pacing and could not be reprogrammed; the device was sub

57 Implantable cardiac pacing and defibrillation devices are effective and comm

58 er reviews the current needs for bradycardia pacing and evaluates what standards should be set to dev

59 s measured, variation in clinically measured pacing and high-voltage impedance and impedance trends a

60 ance energy transfer sensors were induced by pacing and minimally by neurohormonal stimulation, provi

61 ntracellular calcium dynamics during control pacing and reveals the high-resolution 3-D spatial struc

62 ms/beat) to hysteretic btb-ER under periodic pacing and to a vertically spread btb-ER in the case of

63 oping HF in the setting of right ventricular pacing and to determine whether these patients benefit f

64 ical function, allowing simultaneous optical pacing and Vm mapping.

65 ewhat artificial condition of a cell without pacing and with no calcium exchange with the extracellul

66 ion-dependent arrhythmia induction via rapid pacing, and 3) dynamics of re-entry averaged over multip

67 ormed pre-ablation during sinus rhythm or LA pacing, and electrogram locations were coregistered with

68 hniques such as multisite pacing, His bundle pacing, and endocardial left ventricular pacing.

69 ation at baseline, during HBP, biventricular pacing, and HOT-CRT was measured.

70 ous telemetry, intracardiac electrograms and pacing, and optical mapping studies.

71 the magnitude of APD alternans during rapid pacing, and the emergence of a spatially discordant alte

72 l pacemaker leads and right ventricular (RV) pacing are well-known causes of tricuspid valve, mitral

73 ever, other options, including physiological pacing, are being explored.

74 These results suggest either, that pacing as an indicator of acute stress is prone to false

75 HBP was followed by LV pacing at a delay equal to His-ventricular interval.

76 rdiography before and after 2 weeks of daily pacing at a time when pacing was turned off.

77 High-output pacing at the distal His location delivered PHCs.

78 depress heart function, followed by 4 weeks pacing at the right ventricle (dyssynchrony), right atri

79 V node ablation and 4 weeks of electronic RV pacing, at which point TBX18 was injected into the His b

80 ar dysfunction (>35%) who required permanent pacing because of heart block.

81 Pacing behaviour, the most frequent stereotypic behaviou

82 logic pacing by either cardiac biventricular pacing (BiVP) or His bundle pacing (HisBP) may prevent a

83 nal biventricular pacing with single-site LV pacing, but be mitigated by LV stimulation from 2 widely

84 ler advances the state-of-art in respiratory pacing by demonstrating the ability to automatically per

85 nations over the past 640,000 years suggests pacing by Earth's climatic precession, with each glacial

86 It is unclear whether physiologic pacing by either cardiac biventricular pacing (BiVP) or

87 h was most amenable to corrective His bundle pacing by recruitment of latent Purkinje fibers.

88 udy was to determine if antegrade biological pacing can attenuate RV PICM.

89 R-wave triggered pacing can induce RA, the magnitude of which can be modu

90 tricular (RV) pacing, particularly RV apical pacing, can have deleterious effects on cardiac function

91 approach to the development of local cardiac pacing capabilities in Sub-Saharan African nations.

92 dioverter defibrillator without asynchronous pacing capability.

93 In RV myocardial-only pacing cases (false ns-HB pacing, n=14), such responses

94 gnosed all ns-HB cases and all RV myocardial pacing cases.

95 the ECGi data, and the distance to the true pacing catheter tip location was calculated.

96 After catheterization, a transvenous pacing catheter was placed and adenosine was given follo

97 ched off, we propose the novel idea that RMH pacing causes reverse-remodelling.

98 For pacing circuits, we review the complementary roles of im

99 nusoidally, saw-tooth, and randomly variable pacing CLs.

100 rs of repolarization stability under extreme pacing conditions, known to be critical for the arrhythm

101 His bundle pacing corrected wide QRS in 54% of all patients with LB

102 Therefore, the programmed HB pacing correctly diagnosed all ns-HB cases and all RV my

103 branch block-like dyssynchrony caused by DDD pacing could be acutely reverted by right atrial pacing

104 apy (CRT) with defibrillation (CRT-D) versus pacing (CRT-P) for patients with nonischemic cardiomyopa

105 rolonged action potential duration at slower pacing cycle lengths, akin to reverse use dependence.

106 Programmed HB pacing delivered during native conduction resulted in ob

107 5%, left atrial diameter >60 mm, ventricular pacing dependency, and previous ablation.

108 Patients without pre-existing pacing device undergoing TAVR at the University of Color

109 50 consecutive TAVR patients without a prior pacing device, 18 (12%) developed H-AVB necessitating pe

110 iac implantable electronic devices including pacing devices and left ventricular assist devices.

111 of TAVR among patients without pre-procedure pacing devices, occurring at rates similar to in-hospita

112 D implantation in patients with previous CRT pacing did not affect mortality, heart transplantation,

113 The occurrence of pacing did not increase during or after the agonistic in

114 Suppression of RA by pacing during the absolute refractory period results in

115 Conventional biventricular single-site pacing, even with a quadripolar lead, has reduced effica

116 .4 (IQR, 2.5-9.9) months of high-rate atrial pacing followed by 4.1 (IQR, 2.7-5.4) months of self-sus

117 fect of continued CRT versus turning off CRT pacing following continuous flow LVAD implantation.

118 This achieved continuous pacing for at least 1 month in 77% of implants.

119 ated with chronic left ventricular free wall pacing found in previous animal experiments.

120 The pacing frequency at which CaT alternans emerged was fast

121 at alternations in AP morphology lowered the pacing frequency threshold and increased the degree of C

122 amplitude of AP alternans occurring at high pacing frequency was decreased by I(NaL) inhibition, inc

123 s were generated for all stable VTs and with pacing from the atrium, right ventricular apex, and an l

124 reversal of coronary sinus activation during pacing from the left atrial appendage.

125 Long-term RV apical pacing has been associated with increased risk of atrial

126 In heart failure, cardiac pacing has little, if any, variation in rate at rest.

127 His bundle pacing (HBP) may also improve clinical outcomes by narro

128 His bundle pacing (HBP) remains technically challenging and is curr

129 His bundle pacing (HBP) results in physiological ventricular activa

130 selective (S), nonselective (NS) His bundle pacing (HBP), and right ventricular septal capture in ro

131 ential HBP followed by left ventricular (LV) pacing (His-Optimized CRT [HOT-CRT]) to maximize electri

132 for alternative techniques such as multisite pacing, His bundle pacing, and endocardial left ventricu

133 ac biventricular pacing (BiVP) or His bundle pacing (HisBP) may prevent adverse structural and functi

134 After 8 weeks of remodeling under DDD pacing, however, an almost homogeneous work distribution

135 th left ventricular dysfunction, chronic RMH pacing improved cardiac function through improvements in

136 a multinational program to implement cardiac pacing in 14 countries in Sub-Saharan Africa (1996 to 20

137 AF (>=30 s) was induced with 10 s of atrial pacing in 4 out of 6 transgenic goats compared with 0 ou

138 demonstrate synchronized biventricular (BiV) pacing in a leadless fashion by implementing miniaturize

139 The field of pacing in Africa has evolved in an uncoordinated way acr

140 l fiducial markers, computed tomography, and pacing in all cardiac chambers with ECGi acquisition.

141 is a frequency-dependent process, with rapid pacing in canine atrial myocytes inducing oxidative inju

142 from spontaneous activity and under optical pacing in control and drug conditions at multiple doses.

143 effects of LVs with BiV and His bundle (HB) pacing in CRT patients.

144 Multimodal and multisite pacing in ex vivo and in vivo studies over many days dem

145 1, P=0.038) versus biventricular single-site pacing in patients with LVEDVI(>Median).

146 at agitated locomotion has been mistaken for pacing in previous studies and that pacing is in fact un

147 Structural heart disease or inadvertent pacing in scar was not associated with changes in E12; h

148 Pacing in vasovagal syncope remains controversial.

149 t ventricular ejection fraction <=35% and no pacing indications were included.

150 We then apply it to study right ventricular pacing induced electromechanical dyssynchrony and its re

151 Pacing-induced AF in 100% of diet-induced obese mice ver

152 rdiomyocytes, and enhanced susceptibility to pacing-induced AF.

153 Pacing-induced AP and CaT alternans were studied in rabb

154 P wave and increased susceptibility to burst pacing-induced atrial arrhythmias.

155 Right ventricular (RV) pacing-induced cardiomyopathy (PICM) occurs in ~30% of p

156 illation, hospitalization for heart failure, pacing-induced cardiomyopathy and associated death.

157 Right ventricular pacing-induced dyssynchrony substantially reduced heart

158 A total of 8 normal sheep and 8 sheep with pacing-induced HF received incremental intravenous bolus

159 ntaneous premature ventricular complexes and pacing-induced ventricular arrhythmias at ZT14, and the

160 ic behavior, ranging from frequent ectopy to pacing-induced ventricular tachycardia/ventricular fibri

161 eting (DIFAT) technology evaluated the rapid-pacing-induced VTs in each personalized inFAT-based subs

162 Respiratory pacing is an alternative approach using electrical stimu

163 Cardiac pacing is an effective treatment for patients with brady

164 Leadless BiV pacing is demonstrated for the first time in both open-c

165 aken for pacing in previous studies and that pacing is in fact unrelated to current acute stress.

166 only right ventricle (RV) myocardial septal pacing is present.

167 interpretations lead to the conclusion that pacing is unreliable as an indicator of acute stress in

168 ng permanent nonselective His bundle (ns-HB) pacing, it is crucial to confirm HB capture/exclude that

169 Left bundle branch pacing (LBBP) has recently emerged as a promising altern

170 percutaneous drainage and a left ventricular pacing lead dislodgement with no deaths.

171 y EAM allows for direct visualization of the pacing lead on the HB cloud and reproducible navigation

172 atrial and right ventricular free wall (DDD) pacing lead to LV dilatation, a thinned septum, and thic

173 Reproducible navigation of the pacing lead to predetermined HBP locations guided by EAM

174 pacing was delivered from the screwed-in HB pacing lead.

175 Pacing leads were connected to EAM, navigated to tagged

176 In protocol A, TBX18 biological pacing led to superior chronotropic support (62.4 +/- 3

177 A blinded investigator predicted the pacing location from the ECGi data, and the distance to

178 Pacing location was reconstructed from biplane fluorosco

179 nces in space between the true and predicted pacing locations were 20.7 (13.8-25.6) mm (median and [f

180 racotomy, and, during epicardial ventricular pacing, mapping was performed.

181 nge is programming the system, as His bundle pacing may have specific configurations and require spec

182 These results indicate that LVs pacing may serve as a valuable alternative for CRT.

183 feasibility for this completely extracardiac pacing method in a heterogeneous patient population, usi

184 e therapy approach in a canine, rapid atrial pacing model of AF, we demonstrate that NADPH oxidase 2

185 5), or biventricular (n = 4) or bradycardia pacing (n = 1).

186 RV myocardial-only pacing cases (false ns-HB pacing, n=14), such responses were not observed-the QRS

187 The long-term secular evolution, timing, and pacing of changes in the Early Jurassic carbon cycle tha

188 or RSA - an intrinsic respiratory modulated pacing of heart rate.

189 As yet we have no means to reconstruct the pacing of LIP greenhouse gas emissions for comparison wi

190 ction, with the motor cortex influencing the pacing of singing behavior on a moment-by-moment basis,

191 We conclude that pacing of starch mobilization to dawn does not require r

192 Natural pacing of the heart results in heart rate variability, a

193 espiratory sinus arrhythmia is physiological pacing of the heart that disappears in cardiovascular di

194 gy harvesting and storage as well as cardiac pacing on a large-animal scale.

195 further insights into the role of His bundle pacing on improving outcomes.

196 primary performance endpoint, biventricular pacing on the 12-lead electrocardiogram at 1 month, was

197 amics, electrotonic coupling, and stochastic pacing on the nodal dynamics of spatially discordant alt

198 The closed-chest pacing only requires the external source power of 0.3 W

199 aper reviews the current status of available pacing options, with particular focus on His-bundle paci

200 ented by a 12-lead electrocardiogram without pacing or atrial fibrillation noted on their baseline Ja

201 tion, defibrillation, cardioversion, cardiac pacing, or treatments targeted at the underlying disease

202 y narrowed to 162+/-17 ms with biventricular pacing ( P=0.003), to 151+/-24 ms during HBP ( P<0.0001)

203 rease in stroke volume compared to monotonic pacing (P = 0.03) and improvement in circumferential str

204 Intracardiac electrograms and pacing parameters were recorded.

205 Conventional right ventricular (RV) pacing, particularly RV apical pacing, can have deleteri

206 ol to facilitate lead placement, and (3) the pacing performance of the extracardiac lead.

207 (3) Pacing performance was tested in 6 human subjects showin

208 custom delivery tool, and (3) acute clinical pacing performance.

209 Conventional permanent His Bundle pacing (PHBP) can be challenging and associated with hig

210 unication electronics for thin, miniaturized pacing platforms weighing 110 mg with capabilities for s

211 nd QRS morphological change when restricting pacing points to areas of voltage >0.5 mV.

212 ean Society of Cardiology guidelines address pacing post-TAVR, they do not provide in-depth discussio

213 ricular fibrillation induction under a rapid pacing protocol (n=7/14 hearts in control versus 1/14 he

214 Pro-arrhythmogenic pacing protocols were applied to initiate re-entry and p

215 LVs pacing provides short-term hemodynamic improvement and e

216 creases consistently with an increase in the pacing pulse amplitude, pulse width, and vector spacing.

217 l, I investigate the dynamics of APD at high pacing rate under sinusoidally, saw-tooth, and randomly

218 Reductions in pacing rate upon the implementation of AF-induced electr

219 the onset of ventricular arrhythmias at high pacing rate, the knowledge of the involved dynamics and

220 ects of MEF on the electrophysiology at high pacing rates are shown to be proarrhythmic in general.

221 conditions (square-pulse voltage clamp, slow pacing rates, exogenous Ca(2+) buffers).

222 on and produced EADs, in particular, at slow pacing rates.

223 ially deep within the TT network and at high pacing rates.

224 We analyzed the Rush conduction system pacing registry on LBBP to assess the success rates and

225 As compared with baseline, LVs pacing resulted in a larger reduction in QRS area (to 73

226 Left ventricular (LV) epicardial pacing results in slowly propagating paced wavefronts.

227 We propose that respiratory sinus arrhythmia pacing reverse-remodels the heart in heart failure and i

228 in patients with otherwise obligatory ns-HB pacing (RV myocardial capture threshold <HB capture thre

229 Right ventricular pacing (RVP) increases risk of atrial fibrillation in pa

230 some patients who receive right ventricular pacing (RVP).

231 d induction of heart failure through chronic pacing serve as examples of modes of operation relevant

232 d (2) subsequent atrial activation during PV pacing showed that the earliest site was located away fr

233 DDD-CLS pacing significantly reduced syncope burden and time to

234 Minimum distance between epicardial pacing sites and the region of earliest activation in EC

235 mated using 552 left ventricular endocardial pacing sites pooled together and 25 VT-exit sites identi

236 ation in ECGI was 13.2 (0.0-28.3) mm from 25 pacing sites with stimulation to QRS interval <40 ms.

237 he reference VT-exit site), and then 5 close pacing sites, resulted in localization error of 7.2+/-4.

238 ds, and deliver dynamically R-wave triggered pacing stimuli during the absolute refractory period.

239 Optical mapping of transmembrane voltage and pacing studies were performed on isolated, Langendorff-p

240 ution that differs from gradual precessional pacing, suggesting that direct rainfall forcing effects

241 As these improvements were made with pacing switched off, we propose the novel idea that RMH

242 A completely extracardiac pacing system provides the potential for clinical advant

243 ors, and 2 cardiac resynchronization therapy pacing systems.

244 ransisthmus conduction time and differential pacing techniques are commonly used to determine block.

245 ilation to metabolic needs; however, current pacing technology requires manual tuning and does not re

246 EGM QRS duration (QRSd) were recorded while pacing the His lead with simultaneous 12-lead ECG rhythm

247 "Milankovitch" climate change in timing and pacing the Late Devonian mass extinction.

248 AI pacing), whereas during dyssynchrony (DDD pacing), the lateral wall was more loaded, and the septu

249 In 34 of 36 cases of ns-HB pacing, the RV myocardial ERP was shorter than HB ERP (2

250 indication for an ICD but no indication for pacing, the subcutaneous ICD was noninferior to the tran

251 was found with DDD pacing, whereas with AAI pacing, the thin septum showed exaggerated loading and t

252 Cumulative duration of pacing therapy ranged from 19.7 to 35.7 hours.

253 frequency of ICD shocks or anti-tachycardia pacing therapy.

254 on for performing LBBP was a high His-Bundle pacing threshold (n=23) at implant.

255 hich is higher than the required endocardial pacing threshold energy (0.377 muJ).

256 Changes in lead impedance, pacing threshold, battery voltage, and P-wave and R-wave

257 Then, 16 pigs underwent high-rate atrial pacing to develop PersAF.

258 P < 0.05) were seen in vitro during variable pacing to mimic RMH.

259 s and 31 +/- 7 ms; both p < 0.05) and LVs+RV pacing (to 108 +/- 37 muVs; p < 0.05; and 29 +/- 8 ms; p

260 l recommendations for programming His bundle pacing, to deliver optimal therapy and ensure patient sa

261 Pacing tools in such contexts are currently limited to t

262 cy of within 3.5 mm after including up to 11 pacing (training) sites.

263 Temporary LVs pacing (transaortic approach) alone or in combination wi

264 systolic function that persisted beyond the pacing treatment period.

265 osolic Ca(2+) elevation as a result of rapid pacing triggers Ca(2+)-CaM dependent inactivation of RyR

266 rtically spread btb-ER in the case of random pacing (type 3).

267 Here, we describe respiratory pacing using a closed-loop adaptive controller that can

268 Programmed HB pacing using a drive train resulted in a typical abrupt

269 Temporary transvenous phrenic nerve pacing using a novel electrode-bearing catheter may prov

270 the amplitude, pulse width, and size of the pacing vector.

271 atory sinus arrhythmia compared to monotonic pacing, via improvement in systolic function that persis

272 non-left bundle branch block, and lower %CRT pacing vs. responders).

273 Mitral block determined by pacing was achieved in 51 out of 56 (91%) patients.

274 plant, quadripolar biventricular single-site pacing was activated in all patients (n=506).

275 Response to His bundle pacing was assessed in patients with and without CCB in

276 pen-label (unblinded) studies, we found that pacing was associated with a 70% reduction in recurrent

277 ing HB pacemaker implantation, programmed HB pacing was delivered from the screwed-in HB pacing lead.

278 Although permanent His bundle pacing was first reported almost 2 decades ago, it is on

279 palsy occurred in a patient in whom phrenic pacing was inadvertently omitted.

280 h LVEDVI(>Median), biventricular single-site pacing was less efficacious compared to patients with LV

281 Programmed HB pacing was performed from 50 different sites in 32 patie

282 right ventricular (RV) (LVs+RV), BiV, and HB pacing was performed in 27 patients undergoing CRT impla

283 after 2 weeks of daily pacing at a time when pacing was turned off.

284 cular septum, referred to as LV septal (LVs) pacing, was demonstrated.

285 indication for an ICD but no indication for pacing were assigned to receive a subcutaneous ICD or tr

286 on of the LA septum or roof during distal CS pacing were the end point for CS-LA connection eliminati

287 usly distributed with normal conduction (AAI pacing), whereas during dyssynchrony (DDD pacing), the l

288 geneous work distribution was found with DDD pacing, whereas with AAI pacing, the thin septum showed

289 HDAC4 expression ratio was decreased by 3-Hz pacing, while nuclear CaMKII phosphorylation was increas

290 S-HBP, NS-HBP, and right ventricular septal pacing with a cumulative positive predictive value of 91

291 the earliest LA activation during distal CS pacing with a deca-polar catheter placed with its proxim

292 tudies evaluating the feasibility of cardiac pacing with a lead in the anterior mediastinum, outside

293 In this First-in-Human series, diaphragm pacing with a temporary catheter was safe and effectivel

294 Among patients who received physiologic pacing with either BiVP or HisBP, the LV end-diastolic a

295 Among patients who received physiologic pacing with either BiVP or HisBP, the LV end-diastolic a

296 ceiving MPP-AS and biventricular single-site pacing with LVEDVI(<=Median).

297 enlargement using conventional biventricular pacing with single-site LV pacing, but be mitigated by L

298 from 2 widely spaced sites using MultiPoint pacing with wide anatomic separation (MPP-AS: >=30 mm).

299 nergic stimulation or programmed ventricular pacing, without significant proarrhythmic effect.

300 tunities for social support, with reports of pacing work to preserve emotional and physical stamina.