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Peritoneal dialysis
Leda-peritoneal dialysis
| Question | Answer |
|---|---|
| what does peritoneal dialysis use as the filter? | it uses the peritoneal cavity and membrane as the method of dialysis |
| APD: | automated peritoneal dialysis that runs overnight |
| CAPD | manual exchanges done of peritoneal dialysis done 4x a day for 4-10 hrs. |
| where is the access catheter with PD? | in the peritoneum |
| Must continuous peritoneal dialysis be assisted: | yes |
| who does peritneal dialysis usually get ordered by? | a nephrologist |
| is peritoneal dialysis a sterile procedure? | yes, it is sterile |
| can peritoneal dialysis be done at home: | yes, it can be done independantly |
| what are the three phases of PD: | inflow, dwell, drain |
| is the fluid placed in the abdomen hypotonic or hypertonic: | hypertonic |
| what happens in PD during the dwell phase | electrolytes and uremic toxins move via diffusion across membrane into dialysate solution. Excess water moves into the solution via osmosis |
| what is drained during the drain phase of PD: | dialysate and toxins |
| If your PD exchanges are pink tinged, is that okay: | no, not unless it is one of the first few times, your pt. is having their period or ovulating |
| what must a pt. do prior to PD: | empty bowel and bladder, and weigh themselves |
| what must you do with the fluid prior to infusion: | warm it to body temperature, check for clarity, punctures etc. |
| do you need a mask to perform PD: | yes |
| is sterile technique needed for PD: | yes |
| should drain bag be above or below pt.? | below pt. and connecting tube |
| what should the infusion line be connected to: | the dialysate bag-then hang it on IV pole |
| what position should the pt. be in for PD: | supine |
| does the tubing need to be primed prior to admin: | yep |
| should clamps be closed after tubing is primed and before it is connected: | that's easy-of course |
| after the tubing is connected and unclamped, how much fluid should be instilled and drained in order to test it: | 500 mL |
| After it is tested, you put in the prescribed amount of dialysate and cthen what? | close the clamps |
| How many times should PD be performed in a day: | as many times as ordered |
| what PD is complete, what should be done first: | drain, then clamp catheter and disconnect inflow line while maintaining sterility |
| is PD efficient, | no, not really |
| is a sterile or clean dressing used following PD: | sterile |
| how often must vital signs be monitored following PD infusion | monitor every 10 minutes until stable, then every 2-4 hours |
| Monitor your patient for what s/s of peritnitis: | fever, abdominal pain, cramps, slow or cloudy dialysate drainage, vomiting, diarrhea, distention, hyperactive b.s. |
| what s/s of infection should you watch for regarding PD? | redness at site, tenderness and drainage |
| what complications can occur with PD? | infection, peritonitis, abdominal pain, bleedingg, low back discomfort, pulmonary complications, carb and lipid abnormalities, outflow issues, and protien losses |
| How is peritonitis diagnosed? | with cultures, gram stain and WBC differential |
| what are the two common causes of exit site infection: | staph, S. epidermidis (from skin flora) |
| what are the two common causes of peritonitis: | S. aureus or S. epidermidis |
| What is abdominal pain related to: | irrititation from the low pH of the dialysate solution (gets better in a few weeks) or peritonitis. Also if tip of catheter touches bowel, bladder, or peritoneum. |
| If abdominal pain is caused by catheter placement, what can be doen. | change the position of the catheter |
| If air infuses or the diasylate infuses to quickly, what could happen: | referred pain to the shoulder |
| what could an outflow problem be caused by? | a kink in the tunnel segment of catheter or a migration out of the pelvic region or a full colon. May need to be fixed by radiologic or surgical manipulation of catheter. |
| Why are hernia's a complication of PD? | because of increased abdominal pressure d/t diialysate infusion. Common in multiparous women and older men. PD can be resumed using smaller volumes if the pt. is supine |
| Lower back problems, why are they a complication of PD | increased intra-abdominal pressure. lumbosacral curvature is increased by the dialysate. |
| what can be done to help with back problems caused by PD: | a orthopedic binder and regular exercize proram for strenthening the back |
| what are some pulmonary complications experienced by PD pts | atelectasis, pneumonia and bronchitis-caused by upward displacement of the diaphram. This means less room for lungs to expand. Also, obese pts may experience more difficulty breathing |
| what can be done to relieve pulmonary complications of PD: | repositioning, deep breathing, elevation of HOB |
| what makes pulmonary complications more likely: | increased dwell time |
| protien loss occurs with PD as a complication, why? | the peritoneal membrain is permiable ot plasma proteins, amino acids and polypeptides. These can be lost in the dialysate fluid. |
| how much protien can be lost with PD a day | 4-15 g, up to 40 if there is perinoitis as the membrane becomes more permiable. Positive nitrogen balance can be maintained with enough protien intake |
| Carb and lipid abnormalities can occur as a complication of PD, whY; | dialysate glucose is absorbed via the peritoneum and can be as muhc as 100-150 g. day. This causes increased insulin secretion and this stimulates the hepatic production of trygliscerides |
| Encapsulateing sclerosing peritonitis and loss of ultrafiltration can occur with PD, why? | loss of ultrafiltration is b/c of rapid glucose absorbtion. It is unknown why encapsulating sclerosing peritonitis occurs |
| what is encapulsating sclerosing peritonitis: | development of thick fibrous membrane that sorrounds an compresses the bowel for unknown reasons. Intestinal obstruction and strangulation are common. |
| what are some advantages of PD: | short training program, less complicated, can be done independantly, costs less, less heart stress |
| what meds are common with someone recieving peritoneal dialysis: | statins for tryglycerides, aces, BB, loop diuretics, epogen, neprocaps, vit. D |
| what are some disadvantages of PD: | self image, inconvienience, 19% higher mortality rate |
| If an enema must be given to someone wiht PD, what kind should be used: | tap water |
| what kind of dietary limitations are on someone recieving PD: | limit dairy, tomatos and bananas. |
| what kind of catheter is used for PD? | silastic catheter |
| what strength of dextrose solutions are available: | 1.5,2.5 and 4.25% |