What is total cavo pulmonary connections, Biology

Assignment Help:

What is Total Cavo Pulmonary Connections (TCPC)-Lateral Tunnel Operation?

Cardiopulinonary bypass is instituted by cannulation of ascending aorta, SVC innominate vein junction and IVC at diaphragmatic level. Patient is cooled down and on total cardiopulmonary bypass aorta clamped and heart arrested by infusion of cold cardioplegia. The right atrium is opened. The pulmonary trunk is transacted and proximal end over'sewn. The distal end of pulmonary trunk is also doubly sutured. The superior vena cava is transected as it crosses right pulmonary artery. Azygos vein is ligated and divided. The upper divided end of SVC is anastornosed to the superior aspect of right pulmonary artery as in bidirectional Glenn operation. The lower end of divided SVC is then anastomosed to under aspect of light pulmonary artery. The anastomosis is made as wide as possible. Attention is then concentrated to make a lateral tunnel inside right atrium to divert the entire inferior' vena caval blood through the superior vena caval inlet on to the right pulmonary artery. A PTFE (Goretex) graft is cut open and appropriately shaped to form part of the lateral tunnel. Right atrial wall completes the other wall of the tunnel. Atrial septal defect is enlarged in univentricular heart where the right AV valve is the main inlet. The coronary sinus drains into the lower pressured left atrium.

A fenestrated Fontan is preferred where a higher venous pressure is anticipated. A circular hole of 4, 5 or 6 nun is made on the PTFE patch using an aortic punch. Same object can be achieved by a purse string applied at the junction of the Goretex patch with lateral wall of atrium. If the sutures are brought out through the skin on a snare the opening can be controlled externally. The patient is monitored and when it is not required it can be closed with a device after trial closure with balloon.

 


Related Discussions:- What is total cavo pulmonary connections

Define the concept of ventilation, Which of the following are true for vent...

Which of the following are true for ventilation? A. The problems with ventilation induced by injection of curare occur because of the drug's direct action on nicotinic ACh Rec

Define free solution or moving boundary method, Define Free Solution or Mov...

Define Free Solution or Moving Boundary Method? The first electrophoresis technique used in the study of protein was free solution or moving boundary method devised by Tselius

What is exposure assessment, What is Exposure Assessment Exposure Asse...

What is Exposure Assessment Exposure Assessment :  The qualitative and quantitative evaluation  of the  degree  of  intake likely  to occur.

Explain the balance of the ecosystem, Some people believe that being a vega...

Some people believe that being a vegan is the most responsible way to get nutrients while still maintaining the balance of the ecosystem. Explain this rationale, giving solid infor

Water loss during excretion, Water loss during excretion In terrestria...

Water loss during excretion In terrestrial animals body water is also lost during excretion of nitrogenous wastes. A number of physiological adaptations have taken place to mi

What is the excitation threshold of a neuron, Q. What is the excitation thr...

Q. What is the excitation threshold of a neuron? How does this threshold relate to the "all-or-nothing" rule of the neural transmission? The excitation threshold of a neuron is

Action of hormones, Action of Hormones We said earlier that hormones a...

Action of Hormones We said earlier that hormones are released into the blood stream or extracellular fluid and therefore, reach most of the cells of the body. However, they

Mode of nutrition, explain the mode of nutrition in paramecium, euglena and...

explain the mode of nutrition in paramecium, euglena and hydra

Photoreceptors, Photoreceptors Photoreceptors are concerned in absorpt...

Photoreceptors Photoreceptors are concerned in absorption of light by photosensitive pigments. The chemical change involved produces the impulse concerned in the nerve cells.

Bacterial diseases-actinomyces, Actinomyces Members of the genus Actin...

Actinomyces Members of the genus Actinomyces are facultative anerobic, gram-positive, non acid-fast, non-spore forming, nonhaemolytic rods. All Actinomyces require rich media

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd