What I Wish I Knew Before Starting Dialysis
I've been on hemodialysis for four years now. Three times a week, four hours at a time, same chair, same nurse, same coffee from the vending machine downstairs. People ask me questions constantly. Some are helpful. Some aren't. I figured it would be easier to just write down the stuff nobody thinks to ask until something goes wrong. The first question everyone asks is whether it hurts. The needle insertion does, obviously. Two large-bore needles, one pulling blood out, one pushing it back in. You get numb from the lidocaine shot, but there's still pressure. The actual filtering process doesn't hurt at all. You're just sitting there. Some people read. Some sleep. I stare at the ceiling and think about nothing in particular. More important than the pain question is the time commitment. Four hours, three times a week. That's twelve hours minimum, not counting travel and setup. When I first started, I tried to keep working full-time. It was possible but exhausting in a way that had nothing to do with physical fatigue. My advice: negotiate your schedule before you need to. Once you're mid-treatment and your boss finds out, leverage disappears fast.
Here's something they don't tell you about fluid management. The weight gain between sessions is the single biggest predictor of how you'll feel during dialysis. Gain more than four kilograms and cramps become likely. Eight kilograms and your blood pressure will tank somewhere around hour two. I learned this the hard way at a family dinner where I said yes to too much soup and wine. Spent the next dialysis session sweating through my shirt while the nurse watched my BP drop from 150 over 90 to 85 over 50. Never again. Keep it under three kilos between treatments if you can. Phosphate binders are another thing nobody warns you about properly. You have to take them with every meal and snack. Not after. With. The whole point is binding the phosphate in food before your gut absorbs it. I used to take them halfway through eating because it was easier to remember. Completely useless. Waste of money and my kidneys still couldn't handle the load. My phosphorus levels stayed high for months until I got the timing right. Now I keep the pills in a container next to my plate. Same place every meal. EPO and iron supplements — yes, you'll need them. Your body stops making enough red blood cells when your kidneys fail. The injections make you tired for a day or two after. Iron infusions are easier than the old monthly blood draws. Most centers do them at the beginning of your dialysis session so you're done by the time you want to leave.
The Kt/V number your nephrologist talks about is your adequacy score. Target is above 1.2 for hemodialysis. If you're below that, either your sessions are too short, your blood flow rate is too low, or your kidneys are still doing more work than they should be. I hit 1.4 consistently. That means I'm getting a good dose. If you hear your tech saying your flow rate dropped or they shortened your session, that number will slip. It matters. Access type is the kind of surgery that determines your entire treatment experience. AV fistula is the gold standard — your surgeon connects an artery to a vein in your arm and it grows bigger over weeks. Once it's mature, nurses stick it directly. No graft material to get infected. No synthetic tube failing. But not everybody's veins cooperate. I've seen people wait six months for a fistula to mature and then it never does. Then you're back to grafts or catheters, and catheter infections are a real problem. They put the catheter in your chest vein and it's a direct highway for bacteria into your bloodstream. One bad episode of peritonitis with PD can land you back on HD permanently. Speaking of peritoneal dialysis, some people switch to it and regret nothing. Others come back within a year. The home option gives you more control — you do the exchanges yourself, usually four times a day or once overnight with a machine. Travel becomes feasible again. But you need a clean space at home and the discipline to actually do it on schedule. I watched a guy miss two PD exchanges in a row because he was visiting his daughter and didn't want to bother her with the supplies. His creatinine went through the roof. He was back in the center within a week.
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Diet is where most people struggle. Potassium comes from fruits, vegetables, potatoes, tomatoes. Phosphorus hides in dairy, nuts, colas, processed foods. Sodium makes you thirsty, which makes you drink, which makes you gain weight between sessions, which makes dialysis miserable. The dietitian will give you a pamphlet. It doesn't help much. What helped me was actually measuring my portions with a food scale for a couple weeks and logging it in an app. You learn quickly that a single cup of orange juice has more potassium than your daily limit used to be before they changed the guidelines. Blood pressure medications are usually adjusted heavily on dialysis days. Some get held before treatment. ACE inhibitors and ARBs tend to get paused because they drop your pressure too far during the session. Your doctor will give you a schedule. Follow it. I once took my lisinopril before dialysis because I forgot it was supposed to be held. My pressure bottomed out at 78 over 42 and they had to give me a saline bolus mid-treatment. Embarrassing and unnecessary. Sexual function changes are real but rarely discussed. Low testosterone affects half of dialysis patients. Erectile dysfunction affects most of the rest. It's not just psychological. Uremia damages blood vessels and nerves directly. Testosterone replacement is an option but your nephrologist needs to approve it. Some centers are hesitant because of blood thickness concerns. I got on TRT after six months of low levels and my energy improved more than anything else in treatment did. Worth asking about even if it feels awkward.
The mental health piece is the part nobody prepares you for. Depression hits about a third of dialysis patients. Not because you're sad about being sick — though that's fair — but because the treatment itself is brutal on your circadian rhythm. Three times a week you get flushed clean and then slowly fill back up with toxins over the next seventy-two hours. You feel decent right after a session and terrible two days later. That rollercoaster messes with your brain chemistry. I started therapy and it helped more than I expected. Not because talking fixed anything, but because having a scheduled conversation with someone who isn't a nurse or a doctor gave me something that felt normal. Employment is possible on dialysis. I've worked remote jobs, consulted, even ran a small side business. But you have to be honest about your limitations. Some days you can do everything. Some days you can barely get out of bed because your potassium was too high or your access site is bothering you. The Americans with Disabilities Act covers dialysis patients. Your employer doesn't need to know the details, just that you have a recurring medical appointment schedule. Most reasonable managers figure it out anyway. One thing I wish someone had told me about traveling: the dialysis center network is real. You can get treated at different facilities when you're away from home. Just contact your home center at least two weeks in advance and they'll arrange it. Costs vary by insurance. Some plans cover out-of-center treatments fully. Others treat it like a prior authorization situation. Call your insurance before you book the plane ticket.
Home hemodialysis is another option worth exploring if you have the space and the support. More frequent sessions — sometimes six days a week — mean better outcomes and less of a rollercoaster feeling. You train for about two weeks. A nurse comes out and watches you do everything until you can do it alone. Then you're set up with a machine at home. It's not for everybody. My wife couldn't have handled me doing my own treatments in the living room. But my brother-in-law switched to it and his labs improved dramatically within three months. Transplant evaluation should start early. Not after you've been on dialysis for a year. Right when you're diagnosed with stage 5 kidney disease. The waiting list is long — average is three to five years depending on your area and blood type. You can still live on dialysis while you wait. Some people live twenty years on it if they take care of themselves. But a transplant gives you your life back in a way dialysis never will. Even a deceased donor kidney is better than chronic HD for most people. The complications that keep you up at night: infection at the access site, which can cost you the fistula if it gets bad enough. Muscle cramps during treatment, which are worse when you're running dry. Itching from phosphorus buildup, which seems harmless but can drive you crazy. Nausea that doesn't go away no matter what you eat. Restless legs, which may respond to gabapentin but that medication makes you drowsy. All of these are manageable. None of them disappear completely.
I've learned to track my pre and post dialysis weights, my blood pressure before and after, and how I feel on a simple scale from one to ten every session. My nurse reviews it. Trends show up faster that way. A gradual weight gain increase over three weeks means your fluid goal is too loose. A slow BP drop across sessions suggests your ultrafiltration rate is too aggressive. These patterns matter more than any single reading. If you're newly diagnosed, read everything you can find. Join the patient forums. Reddit has r/kidneys and r/dialysis. The American Kidney Fund has resources. Your social worker at the center can connect you with local support groups. Nothing replaces the advice from people actually going through it right now. One last thing about the financial side. Disability benefits are an option if you can't work. SSDI covers dialysis patients fairly quickly because ESRD is on the expedited list. Medicaid kicks in in most states if you fall below the income threshold. Medicare covers you regardless of age once you've been on dialysis for three months. The paperwork is tedious but the coverage is comprehensive. Don't skip it because you think you'll recover faster.
