Results 71 to 80 of about 13,265,348 (295)

Excitation and electroporation in genetically engineered excitable S-HEK cells exposed to electric pulses of different durations

Scientific Reports
Electroporation affects action potential generation in excitable cells such as nerve, muscle and cardiac cells. Since electroporation-based treatments use different pulse protocols, we investigated how electric pulses of different duration (from 500 ns ...
Tina Batista Napotnik, Tina Cimperman, Lea Rems   +2 more
doaj   +1 more source

Sympathetic Nervous Regulation of Calcium and Action Potential Alternans in the Intact Heart

Frontiers in Physiology, 2018
Rationale: Arrhythmogenic cardiac alternans are thought to be an important determinant for the initiation of ventricular fibrillation. There is limited information on the effects of sympathetic nerve stimulation (SNS) on alternans in the intact heart and
James Winter, James Winter, Martin J. Bishop, Catherine D. E. Wilder, Christopher O'Shea, Davor Pavlovic, Michael J. Shattock   +6 more
doaj   +1 more source

Measurements of conduction velocity, maximum upstroke velocity of the action potential, action potential duration and refractory period of the SAN, atrial muscle and AVN from the Fitzhugh-Nagumo model and experiment.

, 2014
Measurements of conduction velocity, maximum upstroke velocity of the action potential, action potential duration and refractory period of the SAN, atrial muscle and AVN from the Fitzhugh-Nagumo model and experiment.
Shin Inada (554973), Halina Dobrzynski (554978), Henggui Zhang (74233), Jurgen E. Schneider (3283935), Jue Li (339674), Mark R. Boyett (326956)   +5 more
core   +1 more source

Evidence‐Based Clinical Practice Guidelines for the Management of Pediatric Febrile Neutropenia: Resource‐Sensitive Recommendations for the Asian Continent

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Febrile neutropenia (FN) is a frequent and serious complication in children receiving cancer therapy. Standardizing FN management across Asia is challenging due to variable healthcare infrastructure, diagnostic capacity, and infection patterns; however, it could improve resource use and patient outcomes.
Joliza Patricia Cañeba, Shweta Bansal, Tea Reljic, Allyne Montecillo‐Aguelo, Hamidah Alias, Farrah Amaranto, Maria Stella Aquino‐Calingasan, Bambang Ardianto, Eggi Arguni, Sally Blair, Thi Tam Dang, Maria Beatriz Gepte, Samanmalee Gunasekara, Andini Handayani, Miriam Kimpo, Catherine G. Lam, Nawachai Lertvivatpong, Sergio Licona, Ana Loseo, Ratha Mlis, Vivian Moreno Berrio, Nguyen Hoai Anh, Anna Lisa Ong‐Lim, Ha Thu Pham, Krishna Sagar Sharma, Bun Sereyleak, Sally Jane G. Velasco‐Aro, Su Yadana, Ambuj Kumar, Sheena Mukkada   +29 more
wiley   +1 more source

Frequency-dependent effects of quinidine on the ventricular action potential and QRS duration in humans.

, 1990
We studied the frequency-dependent effects of quinidine on the right ventricular action potential and QRS duration in 10 patients (nine men and one woman; mean age, 57 +/- 14 years) undergoing electrophysiologic studies for clinical indications.
K Nademanee, W G Stevenson, M G Antimisiaris, J N Weiss, T Suithichaiyakul, V B Frame, C M Pruitt   +6 more
core   +1 more source

Feeding, Fear, and Acceptance: Caregivers’ Experiences of Nutritional Support During Childhood Cancer Treatment

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Purpose To explore caregivers' experiences and perceptions of the nutritional challenges faced by children and adolescents undergoing cancer treatment, including oral intake and the use of nutritional support. Methods This was a qualitative study based on focus groups with parents and caregivers at a Brazilian pediatric oncology hospital ...
Danyelle Apparecida Balsamão Marques, Mariana dos Santos Murra, Welinton Hirai, Ana Laura Balduino do Nascimento, Karla Emilia de Sá Rodrigues, Wilson Elias de Oliveira Junior   +5 more
wiley   +1 more source

Monophasic Action Potential Duration During Programmed Electrical Stimulation [PDF]

Pacing and Clinical Electrophysiology, 1991
To examine changes in monophasic action potential duration (APD) with a pacing protocol similar to that used during electrophysiological testing, action potentials were recorded in vivo from the left ventricular apical endocardium of 12 normal mongrel dogs.
Kanaan, Nabil, Jenkins, Janice M., Childs, Keith, Ge, Yu-Zhi, Kadish, Alan H.   +4 more
openaire   +3 more sources

Action potential duration was prolonged in hypertrophy with fibrosis.

, 2017
A and B: Representative membrane potential traces (A; raw and B; normalized) in each sample. Six or more sites in each papillary muscle at Lmax were measured. The results presented originated from a single impalement.
Yoichiro Kusakari (849641), Yoshitaka Fujimoto (849634), Toru Akaike (849640), Shunsuke Yokota (3626261), Susumu Minamisawa (324230), Daisuke Shimura (849636), Erika Amemiya (3626264), Takashi Urashima (849635), Takahiro Inoue (128300), Genki Miyasaka (3626258)   +9 more
core   +1 more source

Neurocognitive, School‐Based, and Quality of Life Outcomes for Youth With Sickle Cell Disease and Thalassemia: A Scoping Review

Pediatric Blood &Cancer, EarlyView.
ABSTRACT The medical burdens of sickle cell disease (SCD) and transfusion‐dependent β‐thalassemia (TDT) are chronic and cumulative, even in children. Yet the effects expand beyond medications and healthcare visits due to their impacts on school attendance, academic performance, and peer engagement.
Mary Ann Etling, Hakim Tokhi, Alexander A. Boucher   +2 more
wiley   +1 more source

Mechanisms and determinants of ultralong action potential duration and slow rate-dependence in cardiac myocytes. [PDF]

PLoS ONE, 2012
In normal cardiac myocytes, the action potential duration (APD) is several hundred milliseconds. However, experimental studies showed that under certain conditions, APD could be excessively long (or ultralong), up to several seconds.
Zhilin Qu, Douglas Chung
doaj   +1 more source