scholarly journals Left Phrenic Nerve Stimulation Due to Breakage of the Endocardial Right Ventricular Lead at the Costoclavicular Ligament

2007 ◽  
Vol 23 (3) ◽  
pp. 250-254
Author(s):  
Mariko Fujimori ◽  
Akira Sugimoto ◽  
Takayuki Shimizu ◽  
Takashi Tamura
Keyword(s):  
Right Ventricular ◽  
Nerve Stimulation ◽  
Phrenic Nerve ◽  
Phrenic Nerve Stimulation ◽  
Ventricular Lead ◽  
Costoclavicular Ligament

scholarly journals Quadripolar Left Ventricular Lead in a Patient with CRT-D does Not Overcome Phrenic Nerve Stimulation

2011 ◽  
Vol 5 ◽  
pp. CMC.S6759 ◽  
Author(s):  
Mariana S. Parahuleva ◽  
Ritvan Chasan ◽  
Nedim Soydan ◽  
Yasser Abdallah ◽  
Christiane Neuhof ◽  
...  
Keyword(s):  
Nerve Stimulation ◽  
Phrenic Nerve ◽  
Biventricular Pacing ◽  
Left Ventricular ◽  
Left Ventricular Lead ◽  
Cardiac Resynchronization ◽  
Phrenic Nerve Stimulation ◽  
Ventricular Lead ◽  
Potential Alternative ◽  
Physical Adjustment

Effective cardiac resynchronization therapy (CRT) requires an accurate atrio-biventricular pacing system. The innovative Quartet lead is a quadripolar, over-the-wire left ventricular lead with four electrodes and has recently been designed to provide more options and greater control in pacing vector selection. A lead with multiple pacing electrodes is a potential alternative to physical adjustment of the lead and may help to overcome high thresholds and phrenic nerve stimulation (PNS).

scholarly journals A Case of Useful Short-Spaced Bipolar Pacing of a Left Ventricular Lead to Avoid Phrenic Nerve Stimulation

2016 ◽  
Vol 57 (1) ◽  
pp. 118-120 ◽  
Author(s):  
Tomoyuki Kabutoya ◽  
Yasushi Imai ◽  
Hiroaki Watanabe ◽  
Tomonori Watanabe ◽  
Takahiro Komori ◽  
...  
Keyword(s):  
Nerve Stimulation ◽  
Phrenic Nerve ◽  
Left Ventricular ◽  
Left Ventricular Lead ◽  
Phrenic Nerve Stimulation ◽  
Ventricular Lead

Phrenic nerve stimulation during right ventricular outflow tract pacing: A rare but possible complication

2020 ◽  
Vol 31 (12) ◽  
pp. 3330-3333
Author(s):  
Takayuki Sekihara ◽  
Shinsuke Miyazaki ◽  
Tomokazu Ishida ◽  
Moeko Nagao ◽  
Shota Kakehashi ◽  
...  
Keyword(s):  
Right Ventricular ◽  
Nerve Stimulation ◽  
Phrenic Nerve ◽  
Right Ventricular Outflow Tract ◽  
Ventricular Outflow Tract ◽  
Outflow Tract ◽  
Phrenic Nerve Stimulation

scholarly journals Phrenic Nerve Stimulation in a Patient with a Dorsal Column Stimulator

2017 ◽  
pp. 247-249
Author(s):  
Daniel D. DuBose
Keyword(s):  
Nerve Stimulation ◽  
Phrenic Nerve ◽  
Dorsal Column ◽  
Left Ventricular ◽  
Cardiac Resynchronization ◽  
Phrenic Nerve Stimulation ◽  
Ventricular Lead ◽  
Before And After ◽  
Muscle Spasms ◽  
Cardiac Resynchronization Therapy Device

We present a case of a 76-year-old female who developed recurrent left-sided muscle spasms resembling hiccups after permanent dorsal column stimulator (DCS) implantation. The patient had a cardiac resynchronization device with defibrillating capabilities (CRT-D) in place, which was interrogated before and after the permanent DCS placement with no interference reported. Due to the timing of the event with the placement of the DCS, it was presumed that the spasms were related to the DCS implantation, and removal of the DCS was considered. However, further evaluation by a cardiology consultant revealed that a lead from her CRT-D was most likely stimulating the phrenic nerve and causing diaphragmatic contractions. The patient was sent to the electrophysiology clinic where the voltage on her left ventricular lead was reduced, and her symptoms resolved completely. Due to the time, risks, and expense of implanting a DCS, it is imperative to consider all other possible causes of diaphragmatic contractions prior to removing a DCS system. Key words: Dorsal column stimulator, cardiac resynchronization therapy device, phrenic nerve stimulation, hiccups, muscle spasms, diaphragmatic contractions, interference

Botzinger complex region role in phrenic-to-phrenic inhibitory reflex of cat

1989 ◽  
Vol 67 (4) ◽  
pp. 1364-1370 ◽  
Author(s):  
D. F. Speck
Keyword(s):  
Nerve Stimulation ◽  
Phrenic Nerve ◽  
Inhibitory Response ◽  
Phrenic Nerve Stimulation ◽  
Bötzinger Complex ◽  
Before And After ◽  
Pass Through ◽  
Bilateral Lesions ◽  
Decerebrate Cats ◽  
Inhibitory Reflex

Neuronal recordings, microstimulation, and electrolytic and chemical lesions were used to examine the involvement of the Botzinger Complex (BotC) in the bilateral phrenic-to-phrenic inhibitory reflex. Experiments were conducted in decerebrate cats that were paralyzed, ventilated, thoracotomized, and vagotomized. Microelectrode recordings within the BotC region revealed that some neurons were activated by phrenic nerve stimulation (15 of 69 expiratory units, 9 of 67 inspiratory units, and 19 nonrespiratory-modulated units) at average latencies similar to the onset latency of the phrenic-to-phrenic inhibition. In addition, microstimulation within the BotC caused a short latency transient inhibition of phrenic motor activity. In 17 cats phrenic neurogram responses to threshold and supramaximal (15 mA) stimulation of phrenic nerve afferents were recorded before and after electrolytic BotC lesions. In 15 animals the inhibitory reflex was attenuated by bilateral lesions. Because lesion of either BotC neurons or axons of passage could account for this attenuation, in eight experiments the phrenic-to-phrenic inhibitory responses were recorded before and after bilateral injections of 5 microM kainic acid (30–150 nl) into the BotC. After chemical lesions, the inhibitory response to phrenic nerve stimulation remained; however, neuronal activity typical of the BotC could not be located. These results suggest that axons important in producing the phrenic-to-phrenic reflex pass through the region of the BotC, but that BotC neurons themselves are not necessary for this reflex.

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