Search Results - "ROLLINS, DENNIS L."

Impact of myocardial ischemia and reperfusion on ventricular defibrillation patterns, energy requirements, and detection of recovery by HAO QIN, WALCOTT, Gregory P, KILLINGSWORTH, Cheryl R, ROLLINS, Dennis L, SMITH, William M, IDEKER, Raymond E

“…Shocks that have defibrillated spontaneous ventricular fibrillation (VF) during acute ischemia or reperfusion may seem to have failed if VF recurs before the…”
Get full text

Regional Differences in Ventricular Fibrillation in the Open-Chest Porcine Left Ventricle by Nanthakumar, Kumaraswamy, Huang, Jian, Rogers, Jack M, Johnson, Philip L, Newton, Jonathan C, Walcott, Greg P, Justice, Robert K, Rollins, Dennis L, Smith, William M, Ideker, Raymond E

“…ABSTRACT—It has been hypothesized that during ventricular fibrillation (VF), the fastest activating region, the dominant domain, contains a stable reentrant…”
Get full text

Locally propagated activation immediately after internal defibrillation by CHATTIPAKORN, N, KENKNIGHT, B. H, ROGERS, J. M, WALKER, R. G, WALCOTT, G. P, ROLLINS, D. L, SMITH, W. M, IDEKER, R. E

“…Electrical mapping studies indicate an interval of 40 to 100 ms between a defibrillation shock and the earliest activation that propagates globally over the…”
Get full text

Effects of transvenous electrode polarity and waveform duration on the relationship between defibrillation threshold and upper limit of vulnerability by HUANG, J, KENKNIGHT, B. H, WALCOTT, G. P, ROLLINS, D. L, SMITH, W. M, IDEKER, R. E

“…The upper limit of vulnerability (ULV) hypothesis for defibrillation predicts that maneuvers that alter the ULV will cause a similar alteration in the…”
Get full text

The effects of ventricular fibrillation duration and site of initiation on the defibrillation threshold during early ventricular fibrillation by Strobel, John S, KenKnight, Bruce H, Rollins, Dennis L, Smith, William M, Ideker, Raymond E

“…Objectives. The purpose of this study was to determine if the defibrillation threshold (DFT) is lower during the first few cycles of ventricular fibrillation…”
Get full text

Evaluation of a Novel Ventricular Support Device with Defibrillation Capabilities in Canine and Porcine Animal Models by KILLINGSWORTH, CHERYL R., RIPPY, MARIAN K., VIRMANI, RENU, ROLLINS, DENNIS L., McGIFFIN, DAVID C., IDEKER, RAYMOND E.

“…Introduction: Sudden death is prevalent in heart failure patients. We tested an implantable ventricular support device consisting of a wireform harness with…”
Get full text

Mechanisms for the Maintenance of Ventricular Fibrillation: The Nonuniform Dispersion of Refractoriness, Restitution Properties, or Anatomic Heterogeneities? by QIN, HAO, HUANG, JIAN, ROGERS, JACK M., WALCOTT, GREGORY P., ROLLINS, DENNIS L., SMITH, WILLIAM M., IDEKER, RAYMOND E.

“…Introduction: The relative importance of nonuniform dispersion of refractoriness, steep restitution slopes, and anatomic heterogeneities in causing conduction…”
Get full text

A semi-implantable multichannel telemetry system for continuous electrical, mechanical and hemodynamical recordings in animal cardiac research by Kong, Wei, Huang, Jian, Rollins, Dennis L, Ideker, Raymond E, Smith, William M

“…We have developed an eight-channel telemetry system for studying experimental models of chronic cardiovascular disease. The system is an extension of a…”
Get more information

Design and initial evaluation of an implantable sonomicrometer and CW Doppler flowmeter for simultaneous recordings with a multichannel telemetry system by Wei Kong, Rollins, D.L., Ideker, R.E., Smith, W.M.

“…We have developed a sonomicrometer and continuous wavelength (CW) Doppler flowmeter for a multichannel telemetry system. These developments will enable us to…”
Get full text

Regional Variation in Capture of Fibrillating Swine Left Ventricle During Electrical Stimulation by NANTHAKUMAR, KUMARASWAMY, JOHNSON, PHILLIP L., HUANG, JIAN, KILLINGSWORTH, CHERYL R., ROLLINS, DENNIS L., MCELDERRY, HUGH T., SMITH, WILLIAM M., IDEKER, RAYMOND E.

“…Introduction: While it has been shown that electrical stimulation can capture a region of myocardium during ventricular fibrillation (VF), the ideal location…”
Get full text

Right-sided vagus nerve stimulation inhibits induced spinal cord seizures by Tubbs, R. Shane, Salter, E. George, Killingsworth, Cheryl, Rollins, Dennis L., Smith, William M., Ideker, Raymond E., Wellons III, John C., Blount, Jeffrey P., Oakes, W. Jerry

“…We have previously shown that left‐sided vagus nerve stimulation results in cessation of induced spinal cord seizures. To test our hypothesis that right‐sided…”
Get full text

Vagus nerve stimulation for induced spinal cord seizures: insights into seizure cessation by Tubbs, R Shane, Killingsworth, Cheryl R, Rollins, Dennis L, Smith, William M, Ideker, Raymond E, Wellons, 3rd, John C, Blount, Jeffrey P, Oakes, W Jerry

“…Vagus nerve stimulation is known to decrease the frequency, duration, and intensity of some types of intracranial seizures in both humans and animals. Although…”
Get full text

Adaptive Pacing During Ventricular Fibrillation by JOHNSON, PHILIP L., NEWTON, JONATHAN C., ROLLINS, DENNIS L., SMITH, WILLIAM M., IDEKER, RAYMOND E.

“…While it has been shown that pacing during ventricular fibrillation (VF) can capture a portion of the epicardium, little is known about the characteristics of…”
Get full text

Electrode impedance : An indicator of electrode-tissue contact and lesion dimensions during linear ablation by XIANGSHENG ZHENG, WALCOTT, Gregory P, HALL, Jeffrey A, ROLLINS, Dennis L, SMITH, William M, KAY, G. Neal, IDEKER, Raymond E

“…Pre-ablation impedance was evaluated for its ability to detect electrode-tissue contact and allow creation of long uniform linear lesions with a…”
Get full text

Ventricular defibrillation with triphasic waveforms by JIAN HUANG, KENKNIGHT, B. H, ROLLINS, D. L, SMITH, W. M, IDEKER, R. E

“…It has been reported that triphasic defibrillation waveforms cause less myocardial injury than biphasic waveforms. This study compared the defibrillation…”
Get full text

Transmural electrical restitution varies transmurally in the in situ swine heart by Huang, Jian, Rollins, Dennis L., Sims, Anthoy L., Justice, Kyle, Rogers, Jack M., Ideker, Raymond E.

Get full text

Regional Capture of Fibrillating Ventricular Myocardium: Evidence of an Excitable Gap by KenKnight, Bruce H, Bayly, Philip V, Gerstle, Ronald J, Rollins, Dennis L, Wolf, Patrick D, Smith, William M, Ideker, Raymond E

“…Previous investigations have suggested that during ventricular fibrillation (VF) pacing stimuli are incapable of evoking propagated ventricular activations. To…”
Get full text

Pacing During Ventricular Fibrillation: Factors Influencing the Ability to Capture by NEWTON, JONATHAN C., HUANG, JIAN, ROGERS, JACK M., ROLLINS, DENNIS L., WALCOTT, GREGORY P., SMITH, WILLIAM S., IDEKER, RAYMOND E.

“…Pacing During Ventricular Fibrillation. Introduction: Recent studies showed that pacing atrial and ventricular fibrillation (VF) is possible. The studies…”
Get full text

Recurrence patterns after failed defibrillation of spontaneous ventricular fibrillation during acute ischemia by Qin, Hao, Walcott, Gregory P., Killingsworth, Cheryl R., Rollins, Dennis L., Smith, Williams M., Ideker, Raymond E.

Get full text

Ninth cranial nerve stimulation for epilepsy control. Part 1: efficacy in an animal model by Patwardhan, Ravish V, Tubbs, R Shane, Killingsworth, Cheryl R, Rollins, Dennis L, Smith, William M, Ideker, Raymond E

“…To characterize the effects of stimulation of the nerve of Hering (HN; cranial nerve nine) in controlling seizure activity using a canine model. Using…”
Get more information