Kan taksaa thisen kalna bulpui ber: Descending Aorta chungchang hi han sawi mai ila.

Kan thinlung hi taksa pum puia thisen pump chhuahna hmunpui ber a ni tih kan hre vek. Tui motor ang maiin. Chuvangin, he thinlung hian oxygen tamna, thisen thianghlim pump chhuah hian taksa pum puia a sem darh theihna tur kawngpui ber a nei tur a ni. Chu thisen kalna bulpui, lian ber leh chak ber chu aorta emaw, English-a kan sawi angin ‘Aorta’ emaw a ni. Vawiin hian ‘Descending Aorta’ chungchang kan sawi dawn a, hei hi he aorta-a thil pawimawh tak a ni.

A awlsam zawngin, Descending Aorta chu eng nge ni?

‘Descending Aorta’ hi aorta sei ber, i taksa chhunga thisen kalna kawng lian ber a ni. Chhuk chu ‘chhuk’ tihna a ni. Chuvangin, a hming ang bawkin hei hi aorta hnuai lam panna hmun a ni. A hna ber chu oxygen tamna, thisen thianghlim, thinlung atanga i rilru leh pum kaltlangin hnuai lam pan a ni. Khawpui pakhata tui supply tu main water pipe ang mai a ni. He main pipe hi branch tenau zawkah a inthen a, taksa dang zawng zawngah thisen a pe chhuak thin.

Hei hi a then hnih a awm... eng nge ni?

Thisen kalna kawng zawng zawng, Descending Aorta an tih chu kal zel mah se, a awmna hmun a zirin hmun hnih angin kan sawi a ni. Kawngpui pakhatin khawpui pahnih a paltlang chuan khawpui tinah hming hrang hranga koh a nih ang mai a ni.

1. Descending Thoracic Aorta: Descending Aorta hian i rilru (Thorax) a paltlang hian chu hmun chu ‘Descending Thoracic Aorta’ kan ti thin. ‘Thoracic’ tih hi damdawi lam tawngkam a ni a, rilru nena inzawm thilte sawina a ni.

2. Descending Abdominal Aorta: He thisen kalna hian i rilru leh pum inthenna ruh (muscle) diaphragm a paltlang rualin a hming a thlak thin. Diaphragm hnuai lam, i pum chhunga awm chu Descending Abdominal Aorta an ti a. I pum chunglam atanga i navel level vel thlengin a inzar pharh a ni.

Hei hi aorta hmun dang nen hian inzawm tir suh!

A châng chuan aorta hmun ṭhenkhat chu a inzawm khawm thei bawk. Chu pawh chu han sawifiah teh ang.

• Thoracic Aorta leh Descending Aorta hi a inang em?

Ni lo, hengte hi thil inang an ni lo. ‘Thoracic Aorta’ tih hian aorta peng zawng zawng, rilru chhunga kal zawng zawng a kawk a ni. A then hrang hrang a huam a:

• Aortic root: Thinlung nena inzawm root a\anga a \hen.
• Ascending aorta: Thinlung atanga intan a, chunglam hawia inher chhuak.
• Aortic arch: A chung lama curved part, thingpui huan ang maia awm.
• Descending thoracic aorta: Hei hi kan sawi tum Descending Aorta hmun, rilru chhunga awm chu a ni.

Chumi awmzia chu, Descending Aorta thenkhat chu Thoracic Aorta ta a ni tihna a ni.

• Ascending leh Descending Aorta hi eng nge an danglamna?

Hei hi a awlsam hle. Aorta hi zawhna lian tak (?) angin ngaihtuah rawh.

• Ascending aorta hi thinlung atanga a chhoh lai a ni.
• Descending aorta chu chu curve hnua a hnuai lam panna hmun a ni. A rilru atanga a pum thlengin a inzar pharh a ni.

Descending Aorta hian kan taksa tan eng rawngbawlna nge a pek?

Hei hi kan taksa hnuai lam thisen petu kawngpui lian ber a ni. Chumi hmang chuan a atanga chhuak thisen kalna kawng (branches) te tak te te hian kan taksa peng pawimawh tak tak tam tak chuan oxygen leh ei tur tha tak tak an dawng thin.

He thisen kalna kawng hi a lian leh te, a layer te pawh i zir ve ang u.

Aorta lian leh te hi kum, taksa lian leh mipa leh hmeichhia a zirin a inang lo deuh thei. Puitling hrisel takah chuan, a tlangpuiin

• Thoracic descending aorta diameter hi centimetre 2.5 - 3 vel a ni tlangpui .
• Abdominal descending aorta diameter hi centimetre 2 vel a ni tlangpui .

He thisen kalna kawng chak tak hi tissue layer lian pathum atanga siam a ni a:

1. Innermost layer (Tunica Intima): He layer atang hian thisen a luang chhuak thin. Thisen sang control nan a pui a, thisen zam a veng bawk.

2. Middle layer (Media): He layer ah hian muscle te te leh elastic fibers te a awm a, chu chuan thisen chu kawng khata a kal zel theih nan a pui thin. He layer hi kum upat chhoh zel chuan a chak lo thei hle.

3. Pawn lam layer (Adventitia): Hei hi thisen kalna kawng chakna leh insiam dan a hmuhna hmun a ni.

Eng dinhmun nge Descending Aorta hi a nghawng?

Chutiang hna pawimawh tak a thawh avangin he thisen kalna kawng hi chhiatna nasa tak a thlen thei a ni. A natna tlangpui chu aortic aneurysm a ni .

Descending aorta-ah hian aneurysm chi hrang hrang a awm a:

• Thoracic Aortic Aneurysm (TAA): Hei hi rilru chhunga aorta tla thlaah a awm thin. Thisen sang, rilruah trauma, leh genetic disorder thenkhat (e.g. Marfan Syndrome) te hian a thlen thei a ni.
• Abdominal Aortic Aneurysm (AAA): Hei hi aneurysm chi khat zingah chuan a tam ber a ni. Abdominal cavity-ah a awm thin. Kum 65 chunglamte zingah a tam ber a, a bik takin mipa zu in thinte zingah a tam ber . A chhan ber chu thisen kalna kawnga thau (atherosclerosis) awm vang a ni.
• Thoracoabdominal Aortic Aneurysm (TAAA): Hei hi rilru atanga pum thlenga inzar pharh a ni.

Doctor hian hetiang hian aneurysm a hmuh chuan scan hmangin a enkawl chhunzawm zel ang. A lian lo hle a nih chuan nunna atana hlauhawm harsatna a thlen hmain enkawlna a zawng ang.

Harsatna hlauhawm ber pahnih:

1. Aneurysm Rupture: Aneurysm bulging part chu a puak chhuak thin. Hei hian taksa chhungah thisen chhuak nasa tak a thlen thei a, thihna pawh a thlen thei bawk.

2. Type B Aortic Dissection (bang hrual): 1.1.Thisen kalna kawng chhungril ber a tear, chu chuan tear kaltlangin thisen chu bang layer pahnih inkar hmunah a luang lut a ni. Hei hian thisen kalna kawng a tipuak emaw, taksa peng hrang hranga thisen kal chu a titawp thei bawk.

Heng natna lan chhuah dante hi engte nge ni?

Heta thil hlauhawm tak chu a tam zawkah chuan, aneurysm ang chi dinhmun hian a tir lamah chuan engmah a lantir lo . Chumi awmzia chu i taksa chhungah harsatna awm lovin dinhmun hlauhawm tak lo piang chhuak i nei thei tihna a ni. Chuvang chuan doctor pan fo a, checkup neih a pawimawh.

Mahse, aneurysm a chhe dawn chuan warning sign thenkhat a lang thei.

Heng emergency symptoms te hi i neih chuan hun khawhral suh la, ambulance ko nghal la, damdawi in Emergency Treatment Unit (ETU) ah kal rawh. Second tin hi a chhiar tel vek.

Heng natnate hi engtin nge an hriat chhuah?

I doctor-in a enfiah hnua hei hi a rinhlelh chuan, a finfiah nan imaging test eng emaw zat neih a rawt ang che.

• Pum chhunga Ultrasound Scan hmanga enfiah a ni
• Computed Tomography Angiography (CTA) hmanga enfiah a ni
• Magnetic Resonance Imaging (MRI) hmanga enfiah a ni
• Transesophageal Echocardiogram (TEE) hmanga tih hi a tha hle.

Heng test-te hian thisen kalna kawng lian leh te, a pianzia leh a hring emaw, a hring emaw a awm leh awm loh chiang takin a hmu thei a ni.

Enkawlnate chu engte nge ni?

Enkawlna chu i thisen kalna (aneurysm) lian leh te, a lo thang chak dan leh i hriselna zawng zawngah a innghat a ni.

• Enfiahna: Aneurysm hi a te a nih chuan doctor chuan a hun takah a scan thei a, a lian chho zel em tih a en thei.
• Damdawi: Thisen sang leh cholesterol level control nan damdawi pek thin a ni. Chûngte chuan aneurysm a lo ṭhan chakna chu a ti hniam thei a ni.
• Surgery: Aneurysm chu hlauhawm taka lian a nih chuan a chak lo lai chu la chhuakin artificial vessel (graft) hmanga thlak a ni.
• Endovascular Aneurysm Repair (EVAR): Hei hi thil tihsual tlem ber a ni. Stent graft chu groin-a incision te tak te hmangin an dah a, aneurysm chungah an tizau a ni. Hei hian thisen chu thisen kalna kawng thar kaltlangin a kal thei a, chu chuan bang hring chungah pressure a tiziaawm a ni.