June 24, 2011

Saya nak ulang kaji CVP semula!!

Sorry kawan2, Hari ni saya nak mengulang kaji sedikit mengenai apa itu CVP. Memandangkan dekat ICU ni banyak kene monitor CVP, so terpaksela saya baca balik nota semester 1 ni.

Central venous pressure is considered a direct measurement of the blood pressure in the right atrium and vena cava.


Central Venous Pressure is an accurate indicator of the amount of blood returning to the heart from the head, body and limbs via the superior and inferior vena cava.

If and when there is blood loss then the CVP reading will be altered (will fall) almost immediately as the amount of blood returning to the heart will have decreased.

Central Venous Pressure is also an accurate indicator of the ability of the heart (myocardial pump strength) to pump out blood to maintain normal blood pressure and tissue perfusion.

Last but not least, the CVP is an accurate indicator of right ventricular end diastolic volume. In most institutions CVP is measured in cm of water (H2O). On this scale the normal value of CVP is 5 to 10 cm H2O. Some, (very few) institutions measure CVP in mm. Hg (millimetres of mercury). On this scale the normal value is approximately 4 to 8 mm Hg.
ini waveforms untuk central venous line

  • CVP is elevated by :
    • overhydration which increases venous return
    • heart failure or PA stenosis which limit venous outflow and lead to venous congestion
    • positive pressure breathing, straining
  • CVP decreases with:
    • hypovolemic shock from hemorrhage, fluid shift, dehydration
    • negative pressure breathing which occurs when the patient demonstrates retractions or mechanical negative pressure which is sometimes used for high spinal cord injuries.

The CVP catheter is also an important treatment tool which allows for:

  • Rapid infusion
  • Infusion of hypertonic solutions and medications that could damage veins
  • Serial venous blood assessment
(kesian korang mesti korang tak tau apa yang aku tengah belajar ni, tape tak p-erlu amek tahu pasal hal ni..sesiapa yg ada faham..esp doktor mmg bagus..haha boleh ajar saya tak? saya faham cuma saya kurang faham..aik?? hehe)

Okla nak tutup kes pasal CVP plak, entry lepas aku ada cakap nak citer pasal copycat kan? Sorry la sebab idea pasal entry tu tibe2 xde plak bila dah ada kat Pahang ni. So fullstop saya bercadang nak citer pasal tu bila saya balik JB nanti k. Sebab duduk kat Kuantan ni takde idea apa yg nak diceritakan bersama korang semua. Kalau balik JB nanti confirm saya ada banyak cerita.
Sekarang ni tengah menunggu masa untuk pergi kerja. So sempatla untuk saya berblogging dan meluangkan masa sedikit dengan blog tersayang saya. Heehehe(senyum manis). Ok nak cerita sedikit pasal pengalaman saya kat Kuantan ni. So far sangat best, sebab orang2 kat sini sangat Peramah! Dan heppening. Hospital kat sini kecik jer, tak la besar sangat. Tapi aku rasa aku jatuh hati dengan Kuantan sekarang ni. Sebab suasana dia macam best. Lagi2 ada Teluk Chempedak..Pantai paling lawa pernah aku jumpa.


mood: cepatla sem5 datang, nak belajar pasal dermatology ni..dah la sekarang ni tengah sengsara dengan kulit gatal2. Sampai sekarang tak hilang2!

2 comments:

Kadok said...

kalau da post subject cardiac kt blog ni, maksudnye da paham la kn? ;)

kalo nk lebih paham cube la kaitkan CVP dengan disease such as angina pectoris, PVD, hypertension, heart failure or heart block.

cbe tackle part preload and afterload.insyaallah lagi senang nk paham.

so, gudluck kak misi! ;p

cimon said...

ade pantai lg lawa dari TC...cube carik.

hehehe (^v^)