Low CVP for liver resections

This forum made possible through the generous support of SDN members, donors, and sponsors. Thank you.

Arch Guillotti

Senior Member
Staff member
Administrator
Volunteer Staff
Lifetime Donor
20+ Year Member
Joined
Aug 9, 2001
Messages
9,886
Reaction score
7,261
Urge's thread on kidney transplants got me to thinking about the liver resections that I have done. Typically we would put in a central line so that we could measure CVP, in part based on studies such as this:

Curr Surg. 2005 Jul-Aug;62(4):374-82.

Perioperative outcomes of major hepatic resections under low central venous pressure anesthesia: blood loss, blood transfusion, and the risk of postoperative renal dysfunction.
Melendez JA, Arslan V, Fischer ME, Wuest D, Jarnagin WR, Fong Y, Blumgart LH.

Department of Anesthesiology, Memorial Sloan-Kettering Cancer Center, New York, NY 10024, USA.

BACKGROUND: We have previously demonstrated that maintenance of a low central venous pressure (LCVP) combined with extrahepatic control of venous outflow reduced the overall blood loss during major hepatic resections. This study examined the overall outcomes and, in particular, renal morbidity associated with a large series of consecutive major liver resections performed with this approach. In addition, the rationale for the anesthetic management to maintain LCVP was carefully reviewed. STUDY DESIGN: All major hepatectomies performed between December 1991 and April 1997 were reviewed. The prospective Hepatobiliary Surgical Service database was merged with the Memorial Hospital Laboratory and Blood Bank databases to yield the nature of the operation, blood loss, blood product transfusions, outcomes, and levels of preoperative, postoperative, and discharge serum creatinine and blood urea nitrogen. RESULTS: A total of 496 LCVP-assisted major liver resections were performed, with no intraoperative deaths and an in-hospital mortality rate of 3.8%. The median blood loss was 645 mL. Sixty-seven percent of the patients did not require perioperative blood transfusion during surgery and the immediate 12 hours after surgery. The median number of blood transfusions was 2. Only 3% of the patients experienced a persistent and clinically significant increase in serum creatinine possibly attributable to the anesthetic technique. Renal failure directly attributable to the anesthetic technique did not occur. CONCLUSIONS: Major resection with LCVP allowed easy control of the hepatic veins before and during parenchymal transection. The anesthetic technique, designed to maintain LCVP during the critical stages of hepatic resection, not only helped to minimize blood loss and mortality but also preserved renal function.


What are the rest of you folks doing?

Members don't see this ad.
 
Speaking more from hearsay (I've only done ~3-4) these almost all get central lines with low CVP goal where I'm at. If they have good peripherals to place a RIC, then maybe the central line is a tlc. Otherwise they are getting a MAC vs. cordis + SLIC. Sometimes get to play around with TEE if the pt. has enough co-morbidities.

Fun case.
 
We do basically what is described. 2 great peripherals (14s) or an introducer, low CVP. The major resections get introducers. Depending on anticipated blood loss, may do peripheral introducers in addition to a central (IJ). Also avoid LR, which appears to have some evidence behind it (less acidosis). I'm surprised it took 6 years to get 496. Seems like we do more.
 
Members don't see this ad :)
I seem to remember reading a study out of Sydney where they looked at CVP and blood loss in major hepatic resections. It seems that the breakpoint was a CVP of 5. Below 5, there was minimal blood loss and above 5 blood loss exceeded 1.5L.

We routinely put up 2 big peripheral lines, an a-line and CVP, but minimise fluids to keep CVP down. Also we've tried dropping the legs and using nitroglycerine to decrease SVR and preload. I have read that there is a risk of air embolism when running low CVP as often the liver is lifted above the level of the heart, but I can't recall ever reading a case report of this.
 
Yep, use low CVP here too.

For Liver transplants our surgeons don't use piggyback or Veno-venous bypass, just old school full x-clamp. We keep CVP 5-6 for disections and anhepatic phase. Then just prior to unclamping we fire 5g Mg in the 1 L central line bag, give 2 amps NaHCO3, get the pressure around 150-160sys with levo/epi and give 100mg Lido. Calcium ready for bolus if bp drops too far. At unclamping pressure usually drops to around 100-110 then stabilizes. CVP is then allowed to rise to 8-12 for remainder of the case and in the ICU.

Not uncommon to not have to transfuse for our liver transplants with this method (though our surgeons are good with hemostasis).

CanGas
 
Pleople who are doing the low cvp thing, are you starting any pressors like neo, or epi?
 
Usually using dense epidural block/GA in combination with Phenylephrine infusion as need for BP.
 
either you guys are doing relatively healthy liver transplants or our surgeons are butchers because even with low CVP it was pretty typical to give 5-10 prbc + products. Most of our livers were of the sick as hell variety though.
 
we put in 2 peripherals - 16s and a line. our liver guys will do a lobe in under 2 hours. EBL usually under 500. they never ask for or bitch about cvp.
 
Our guys are pretty good. We've done combined heart-liver transplants on full CPB with full heparization and only needed 2-5 U of PRBC's + other products of course. Is a combined heart-liver transplant on full CPB sick enough? ;-)

Our regular livers are generally Child-Pugh's B-C's.

CanGas

either you guys are doing relatively healthy liver transplants or our surgeons are butchers because even with low CVP it was pretty typical to give 5-10 prbc + products. Most of our livers were of the sick as hell variety though.
 
At our academic center = TEP, A-line, Cordis, and RICC or two 14-16 g PIVs. +/- low CVP. + Lotsa products and pressors.

At our (more) private hospital = TEP and 18 g PIV. Nobody cares about CVP. Maybe a hit of Neo or Ephedrine if they get hypotensive on induction.


It all depends on your surgeons

- pod
 
Top