Pediatric cardiac surgery is an are...

Pediatric cardiac surgery is an area of recent frontiers. Many infants and children born with congenital heart failings now are discovering an encouraging coming events The invention of the heart-lung machine, along with of the present day strides in technology and surgical operations has made it possible for cardiac surgeon to provide pediatric patients with just discovered hope for repairing complex deficiencys One new frontier in pediatric cardiac surgery is the unfolding of the modified ultrafiltration body which is used during pediatric open-heart performances to reduce the adverse purports associated with cardiopulmonary bypass (CPB) surgery

BACKGROUND

To repair greatest in number congenital defects in pediatric patients, it is necessary to use CPB which is not without many risks. united of the challenging problems involved with cardiac surgery is hemodilution. During CPB surgery the CPB interrogate must be primed with crystalloid solutions to provide an air-free circuit. During bypass, these crystalloid solutions are introduced into the patient's vascular space, causing hemodilution, and, in inflect a decrease in the patient's hematocrit horizontal platelets, and clotting factors. This decrease causes increased bleeding, ne for transfusions, intubation time, and fulness of intensive care unit (ICU) stays.

Hemodilution also decreases the patient's colloid osmotic constraining force which causes fluid to influence into the extravascular tissues, producing edema. This edema affects many organs, including the brain, kidneys, liver, and lung The prime book to patient blood volume ratio is higher in children than in adults; therefore, it is necessary to use all means possible to form this fluid and decrease hemodilution.

MODIFIED ULTRAFILTRATION

Modified ultrafiltration curtails the excess fluid in the patient's vascular connected view thus increasing colloid osmotic squeezing This reverses the gradient, causing a decrease in tissue and organ edema and associated morbidity. The modified ultrafiltration technique also allows kindred to be returned to the patient in a concentrated form. The maximum charge for the extra supplies distressed for modified ultrafiltration range from $150 to $300 making it a cost-effective measure that results in shorter intubation time and ICU stays.

Patients who have undergone CPB deeds with the modified ultrafiltration technique at John Hopkins Hospital, Baltimore, have demonstrated positive results; however, the transaction is associated with some risks, including improper assembly of the modified ultrafiltration cross-examine introduction of air into the patient's vascular connected view line rupture, and hypotension. Neurological deficits also can be associated with modified ultrafiltration if the house flow through the system is too high, causing a decrease in kin flow to the brain.

To use modified ultrafiltration, the perfusionist who operates the heart-lung machine first modifies the pediatric CPB circuit to incorporate the modified ultrafiltration method Before priming the CPB circuit, the perfusionist adds a roller head, hemoconcentrator, small matter trap, extra tubing, and connectors to the circuit to incorporate the modified ultrafiltration line. The cross-examine and these extra supplies then are primed to make sure a bubble-free circuit.

At the sterile field, the succor clamps and cuts the venous line to add a luer-lok connecter The modified ultrafiltration line coming from the cross-examine will be attached to the luer-lok connector.

Modified ultrafiltration for patients who weigh fewer than 15 kg (33 lbs) is implemented immediately after CPB ceases. It typically is performed for 10 minutes, based forward the surgeon's preference. Approximately 10 mL to 20 mL for kg per minute of fluid is remov from the patient, which averages between 400 mL and 600 mL depending onward the patient's weight, amount of time the modified ultrafiltration a whole is employed, and surgeon election Inotropic agents and diuretics, as well as peritoneal dialysis catheters, also are used to decrease the patient's visible form [i]or[/i] frame fluid.

CASE STUDY

Jill, a one-year-old female, was admitted to the OR for repair of a ventricular septal imperfection (VSD). She was brought to the OR suite at 6:30 AM by means of her father. The circulating feed greeted Jill and her father and instructed the father to sit through Jill while masked anesthesia was administered. After Jill was sedated, the circulating foment encouraged the father to kiss his daughter goodbye and escorted him to the waiting area. The circulating give suck to informed Jill's family members that they would be updated regarding the patient's status approximately each one and one-half hours to brace hours during the procedure.

In the OR, Jill was intubated, and the anesthesia care provider placed peripheral and central venous lines and a legumes oximeter monitor on Jill's great toe. The physician assistant inserted a 6-Fr Foley catheter, and the circulating cherish placed a grounding pad forward Jill's back. Jill was positioned supine for maximum cardiac aspect The circulating nurse placed a cushioned pad below Jill's head and a small shoulder turn about under her shoulders, taking care that her extremities were resting comfortably and that the endotracheal tube was not disrupted.