| Mastax alternans | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Coleoptera |
| Family: | Carabidae |
| Genus: | Mastax |
| Species: | M. alternans |
| Binomial name | |
| Mastax alternans Basilewsky, 1959 | |
Mastax alternans is a species of beetle in the family Carabidae with restricted distribution in the Democratic Republic of Congo. [1]
T wave alternans (TWA) is a periodic beat-to-beat variation in the amplitude or shape of the T wave in an electrocardiogram TWA was first described in 1908. At that time, only large variations could be detected. Those large TWAs were associated with increased susceptibility to lethal ventricular tachycardias.
Electrical alternans is an electrocardiographic phenomenon of alternation of QRS complex amplitude or axis between beats and a possible wandering base-line. It is seen in cardiac tamponade and severe pericardial effusion and is thought to be related to changes in the ventricular electrical axis due to fluid in the pericardium, as the heart essentially wobbles in the fluid filled pericardial sac.
The mastoid lymph nodes are a small group of lymph nodes, usually two in number, located just beneath the ear, on the mastoid insertion of the sternocleidomastoideus muscle, beneath the posterior auricular muscle.
Pulsus alternans is a physical finding with arterial pulse waveform showing alternating strong and weak beats. It is almost always indicative of left ventricular systolic impairment, and carries a poor prognosis.
Brachininae is a subfamily of beetles in the family Carabidae.
Mastax is a genus of beetles in the family Carabidae, containing the following 52 species:
Avitomyrmex is an extinct genus of bulldog ants in the subfamily Myrmeciinae which contains three described species. The genus was described in 2006 from Ypresian stage deposits of British Columbia, Canada. Almost all the specimens collected are queens, with an exception of a single fossilised worker. These ants are large, and the eyes are also large and well developed; a sting is present in one species. The behaviour of these ants may have been similar to extant Myrmeciinae ants, such as foraging solitarily for arthropod prey and never leaving pheromone trails to food sources. Avitomyrmex has not been assigned to any tribe, instead generally being regarded as incertae sedis within Myrmeciinae. However, its identity as an ant has been challenged, although it is undoubtedly a hymenopteran insect.
Mastax fulvonotata is a species of beetle in the family Carabidae with restricted distribution in the India.
Mastax congoensis is a species of beetle in the family Carabidae with restricted distribution in the Afghanistan.
Mastax liebkei is a species of beetle in the family Carabidae with restricted distribution in the Democratic Republic of Congo.
Mastax louwerensi is a species of beetle in the family Carabidae with restricted distribution in the Indonesia.
Mastax philippina is a species of beetle in the family Carabidae with restricted distribution in the Philippines.
Mastax raffrayi is a species of beetle in the family Carabidae with restricted distribution in the Ethiopia.
Mastax rawalpindi is a species of beetle in the family Carabidae with restricted distribution in the Pakistan.
Mastax hargreavesi is a species of beetle in the family Carabidae found in Ivory Coast and Sierra Leone.
Mastax latefasciata is a species of beetle in the family Carabidae found in China and Vietnam.
Mastax nana is a species of beetle in the family Carabidae found in Chad, Mali and Democratic Republic of the Congo.
Mastax poecila is a species of beetle in the family Carabidae found in Cambodia, China and Singapore.
Mastax royi is a species of beetle in the family Carabidae that can be found in Ivory Coast and Senegal.
Mastax sudanica is a species of beetle in the family Carabidae found in Chad and Sudan.
 | This Carabinae-related article is a stub. You can help Wikipedia by expanding it. |