geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

The diastolic viscous properties of cat papillary muscle


, : The diastolic viscous properties of cat papillary muscle. Circulation Research 40(3): 288-292

The measurement of ventricular diastolic compliance is complicated by the presence of viscous properties. To approach this problem, cat papillary muscles contracting isometrically at 15/min at 26 degrees C were stretched at different velocities during diastole. At a given length there was no excess of force above that defined by the static force-length curve until velocity of stretch exceeded 1 muscle length/sec. At greater velocities of stretch there was an increase of force with increasing velocity of stretch denoting viscous resistance to stretch. The viscous characteristic was alinear and increased with muscle length. At a given muscle length potentiation of contractile state by paired pulse stimulation caused a change in the diastolic force-length curve but there was no apparent relationship between viscous resistance to stretch and contractile state or the length of the "series viscous element." These results lead one to expect viscous resistance to stretch during rapid filling of the intact left ventricle.

US$19.90

PMID: 837476

DOI: 10.1161/01.RES.40.3.288


Other references

Tang, F.; Voorhees, D., 2002: Device for eliminating parallax of stereo microscopes during refractive laser surgery. A device for eliminating decentration error due to parallax during ophthalmic laser surgery comprises a stereo microscope having a first ocular and a second ocular and an objective lens for viewing a patient's eye, a laser for projecting a la...

Aykut, M.; Erman, O.K.; Doğan, S., 2016: Variability in Population Density of House Dust Mites of Bitlis and Muş, Turkey. NlmCategory="UNASSIGNED">This study was conducted to investigate the relationship between the number of house dust mites/g dust and different physical and environmental variables. A total of 1,040 house dust samples were collected fro...

Kuikka J.; Levin M.; Bassingthwaighte J.B., 1986: Multiple tracer dilution estimates of d glucose 2 deoxy d glucose uptake by the heart. Permeability-surface area products of the capillary wall, PSpc, and the myocyte sarcolemma, PSpc, for D-glucose and 2-deoxy-D-glucose were estimated via the multiple indicator-dilution technique in isolated blood-perfused dog and Tyrode-perfused r...

Rao, T.S.; Lariosa Willingham, K.D.; Yu, N., 2003: Glutamate-dependent glutamine, aspartate and serine release from rat cortical glial cell cultures. Glia play a pivotal role in glutaminergic excitatory neurotransmission in the central nervous system by regulating synaptic levels of glutamate and by providing glutamine as the sole precursor for the neurotransmitter pool glutamate to neurons thr...

Davies, E., 2013: More US citizens die from meningitis as scope of inquiry widens. Bmj 345: E7095-E7095

Ting, S.L.; Koay, A.C.A.; Yew, Y.H.; Chua, C.N., 2012: Challenges in diagnosis and management of pseudoptosis secondary to asymmetrical skin creases. Asymmetrical eyelid skin crease may be mistaken for ptosis due to apparent narrowing of the palpebral fissure in the eye without the skin crease. This study describes a series of patients who were mistakenly referred for ptosis operation as a resu...

Cornec, D.; Jamin, C.; Pers, J-Olivier., 2015: Sjögren's syndrome: where do we stand, and where shall we go?. Primary Sjögren's syndrome (pSS) is one of the most frequent autoimmune systemic diseases, mainly characterized by ocular and oral dryness due to the progressive destruction of lachrymal and salivary glands by an inflammatory process. A note...

Waggoner, A.D.; D.L.s Fuentes, L.; Faddis, M.N.; Gleva, M.J.; Spence, K.E.; Davila-Roman, V.G., 2008: Left ventricular diastolic filling prior to cardiac resynchronization therapy: implications for atrioventricular delay programming. The programmed atrioventricular delay (AVD) is an important determinant of the response in left ventricular (LV) systolic performance during cardiac resynchronization therapy (CRT). It is not well established if the optimal AVD for CRT may be infl...

Mero, A., 1993: Neuromuscular performance and skeletal muscle fiber characteristics in pubertal power athletes during training. Medicine & Science in Sports & Exercise 25(5 SUPPL ): S47

Johner, A.; Kunz, S.; Linder, M.; Shakur, Y.; Seebeck, T., 2006: Cyclic nucleotide specific phosphodiesterases of Leishmania major. Background: Leishmania represent a complex of important human pathogens that belong to the systematic order of the kinetoplastida. They are transmitted between their human and mammalian hosts by different bloodsucking sandfly vectors. In their hos...