latent period

period /pe·ri·od/ (pēr´e-od) an interval or division of time.

ejection period the second phase of ventricular systole, being the interval between the opening and closing of the semilunar valves, during which the blood is discharged into the aortic and pulmonary arteries; it is divided into a p. of rapid ejection followed by a p. of reduced ejection.

gestation period the duration of pregnancy, in humans being about 266 days (38 weeks) from the time of fertilization until birth. In obstetrics, it is instead considered to begin on the first day of the woman's last normal menstrual period prior to fertilization, thus being about 280 days (40 weeks).

incubation period

1. the interval of time required for development.

2. the interval between the receipt of infection and the onset of the consequent illness or the first symptoms of the illness.

3. the interval between the entrance into a vector of an infectious agent and the time at which the vector is capable of transmitting the infection.

latency period

1. latent p.

2. see under stage.

latent period a seemingly inactive period, as that between exposure to an infection and subsequent illness, or that between the instant of stimulation and the beginning of response.

menstrual period , monthly period the time of menstruation.

pacemaker refractory period the period immediately following either pacemaker sensing or pacing, during which improper inhibition of the pacemaker by inappropriate signals is prevented by inactivation of pacemaker sensing.

refractory period the period of depolarization and repolarization of the cell membrane after excitation; during the first portion (absolute refractory p.), the nerve or muscle fiber cannot respond to a second stimulus, whereas during the relative refractory period, it can respond only to a strong stimulus.

safe period the period during the menstrual cycle when conception is considered least likely to occur; it is approximately the ten days after menstruation begins and the ten days preceding menstruation.

sphygmic period ejection p.

Wenckebach period the steadily lengthening P–R interval occurring in successive cardiac cycles in Wenckebach block.

latent period

1. The period elapsing between the application of a stimulus and the obvious response, such as the contraction of a muscle.

2. The interval between exposure to an infectious organism or a carcinogen and the clinical appearance of disease. Also called incubation period.

Latent period

Also called incubation period, the time between infection with a disease-causing agent and the development of disease.

Mentioned in: AIDS

latent period,

the interval between the time of exposure to an injurious dose of radiation and the response.

period [pēr´e-od]

an interval or division of time; the time for the regular recurrence of a phenomenon.

absolute refractory period the part of the refractory period from phase 0 to approximately −60 mV during phase 3; during this time it is impossible for the myocardium to respond with a propagated action potential, even with a strong stimulus. Called also effective refractory period.

blanking period a period of time during and after a pacemaker stimulus when the unstimulated chamber is insensitive to avoid sensing the electronic event in the stimulated chamber.

effective refractory period absolute refractory period.

ejection period the second phase of ventricular systole (0.21 to 0.30 sec), between the opening and closing of the semilunar valves, while the blood is discharged into the aorta and pulmonary artery. Called also sphygmic period.

gestation period see gestation period.

incubation period see incubation period.

isoelectric period the moment in muscular contraction when no deflection of the galvanometer is produced.

latency period

1. latent period.

2. latency stage.

latent period a seemingly inactive period, as that between exposure to an infection and the onset of illness (incubation period) or that between the instant of stimulation and the beginning of response (latency, def. 2).

refractory period the period of depolarization and repolarization of the cell membrane after excitation; during the first portion (absolute refractory period), the nerve or muscle fiber cannot respond to a second stimulus, whereas during the relative refractory period it can respond only to a strong stimulus.

relative refractory period the part of the refractory period from approximately −60 mV during phase 3 to the end of phase 3; during this time a depressed response to a strong stimulus is possible.

safe period the period during the menstrual cycle when conception is considered least likely to occur; it comprises approximately the ten days after menstruation begins and the ten days preceding menstruation. See the section on fertility awareness methods, under contraception.

sphygmic period ejection period.

supernormal period in electrocardiography, a period at the end of phase 3 of the action potential during which activation can be initiated with a milder stimulus than is required at maximal repolarization, because at this time the cell is excitable and closer to threshold than at maximal diastolic potential.

vulnerable period that time at the peak of the T wave during which serious arrhythmias are likely to result if a stimulus occurs.

Wenckebach's period a usually repetitive sequence seen in partial heart block, marked by progressive lengthening of the P–R interval; see also dropped beat.

latent,

adj hidden; beneath the surface; not obvious or active.

latent image,

n See image, latent.

latent period,

n See period, latent.

latent

dormant or concealed; not manifest; potential. See also latent image, infection.

latent period

a seemingly inactive period, as that between exposure of tissue to an injurious agent and the manifestations of response, or that between the instant of stimulation and the beginning of response. The latent period in virus replication defines the period from adsorption, penetration and uncoating of the virus until the first progeny virus are released from the cell.

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absolute refractory period active anaphylaxis AIDS anaphylaxis antiserum anaphylaxis effective refractory period ejection period gestation period incubation period isoelectric period latency period latent latent image lentivirus local anaphylaxis menstrual period palinopsia passive anaphylaxis period			ABSTRACT HIV/AIDS theory postulates a latent period of roughly 10 years between infection by human immunodeficiency virus (HIV) and the appearance of symptoms of acquired immune deficiency syndrome (AIDS). Incongruous age distributions of HIV infections and deaths from HIV ... by Bauer, Henry H. / Journal of American Physicians and Surgeons With the evolution of genotype 13 it has become apparent that blight is now more aggressive, it can grow faster, it has a shorter latent period and is possibly more active at lower temperatures. Tough approach needed to beat the problem of potato blight; Farming by The Journal (Newcastle, England) Both the joints and the heart are involved as a result of allergic response due to streptococcal infection in the throat, after a latent period of 7-10 days, during which antibodies to streptococci develop/ appear in the blood. What Is Rheumatic Fever (RF) by Arjun Singhe / Health care industry community			late systolic murmur late-onset diabetes late-onset immune deficiency late-phase hypersensitivity reaction late-term late-term abortion latebra latency latency period latency stage latent latent allergy latent carcinoma latent clostridial infection latent content latent diabetes latent energy latent gout latent heat Latent Homosexuality latent hyperopia latent image latent learning latent malaria latent nystagmus latent period latent phase latent reflex latent schizophrenia latent stage latent syphilis latent tetany latent tetany syndrome latent tuberculosis latent virus latentiation Latents laterad lateral lateral abdominal region lateral aberration lateral ampullar nerve lateral antebrachial cutaneous nerve lateral aortic node lateral aperture of the fourth ventricle lateral atlantoaxial joint lateral cartilage of nose lateral cerebellar nucleus lateral cerebral sulcus lateral collateral ligament injury lateral column			Latent Image Latent Image Latent Image Latent Image Metrology latent images latent images latent images Latent infection Latent infection Latent infection latent instability latent jaundice latent jaundice latent jaundice latent jaundice latent learning latent learning latent learning latent learning Latent Lethality latent load latent malaria Latent Membrane Protein 1 Latent Membrane Protein 2A Latent Membrane Protein I Latent Muscle Reaction Timing Latent Nuclear Antigen-1 latent nystagmus latent nystagmus latent nystagmus latent period Latent Period 1 latent periods latent periods latent periods Latent phase Latent Photographic Image latent power Latent Recently Acquired Syphilis latent reflex Latent Repository Statistics Query Latent root latent schizophrenia latent schizophrenia latent schizophrenia Latent semantic analysis Latent Semantic Analysis in Technology-Enhanced Learning Latent semantic indexing Latent Semantic Indexing Model Latent Semantic Information Latent Semantic Optimization latent stage latent syphilis latent syphilis latent syphilis latent tetany latent tetany latent tetany latent tetany syndrome Latent TGF Latent time