Special Situations and Shared

The contract between this chapter and the reader.

1. 1. Apply an individualized, goals-based plan rather than a default modality.
2. 2. Determine when home hemodialysis is appropriate.
3. 3. Assess the frail or elderly patient for modality and for whether to dialyse at all.
4. 4. Recognise HD versus PD as a preference-sensitive choice when both are feasible.
5. 5. Distinguish effective-care decisions from preference-sensitive decisions.
6. 6. Present conservative (non-dialysis) care as a genuine option.
7. 7. Use incremental hemodialysis where residual function allows.
8. 8. Conduct a shared-decision conversation using natural-frequency framing and teach-back.
9. 9. Approach dialysis withdrawal and end-of-life transitions.

A sixty-second reading. Each bullet stands alone.

• The choice of and around hemodialysis is an individualized, goals-based plan, not a single default.
• Home hemodialysis lets a trained patient or carer dialyse at home, enabling frequent or nocturnal schedules with better volume, blood-pressure, and phosphate control.
• It needs a suitable patient or carer, training, and a home setup, and it improves flexibility and quality of life.
• For frail older patients, modality — and the decision to dialyse at all — turns on goals, burden, and a comprehensive assessment, not age alone.
• When HD and PD are both feasible, the choice is preference-sensitive, with no clear survival difference overall.
• Effective-care decisions are settled by physiology and evidence; preference-sensitive decisions are settled by the patient's values.
• The most important preference-sensitive decision is whether to dialyse at all, especially in frail elderly with limited prognosis.
• In that group, dialysis may not extend good-quality life, and conservative care is a legitimate path, not a failure.
• Incremental hemodialysis (twice-weekly) is reasonable while substantial residual function persists.
• Shared decision-making runs choice talk, option talk with natural-frequency numbers, and decision talk, closed with teach-back.
• Decisions are documented with the patient's values and revisited as circumstances change.
• Withdrawal of dialysis is a planned, palliative transition and one of the commoner paths to death in dialysis.

The medical core. An expert should agree the special situations and the decision framework are fully covered here.

Why it matters at the bedside

Most of this book decides what the prescription needs. This chapter decides what the person wants. The hardest questions in hemodialysis — whether to dialyse at all, which modality, at home or in-center, and when to stop — have no physiological answer; they are settled by the patient's values, and the clinician's job is to make that choice a real and informed one.

The special situations, in brief

• Several situations sit outside the routine in-center prescription: patients suited to dialysing at home, frail older patients weighing whether dialysis serves their goals, the choice between haemodialysis and peritoneal dialysis, those with enough residual function for an incremental start, and patients for whom not dialysing is the better path. Each blends a practical setup with a values question.

Home hemodialysis

• Home HD lets a trained patient or carer run dialysis at home, which makes frequent and nocturnal schedules practical — and with them the better volume, blood-pressure, and phosphate control of more dialysis (Chapter 9). It demands a suitable, motivated patient or carer, training, and a home setup, and it returns autonomy, flexibility, and quality of life that in-center dialysis cannot.

The frail and elderly patient

• Age alone is a poor guide. A comprehensive assessment of frailty, function, goals, and support does the work: in-center HD imposes transport and thrice-weekly sessions and risks intradialytic hypotension, so for some frail patients PD, home HD, or conservative care better fits their life — and for some, the right answer is not to dialyse.

HD versus PD

• When both modalities are feasible, survival is broadly similar, so the choice belongs to the patient's life: PD is home-based and flexible with no needles; HD can be in-center thrice-weekly or done at home; support, comorbidity, residual function, and lifestyle all weigh in. It is a preference-sensitive decision, ideally framed within integrated kidney-failure care that lets patients move between modalities over time.

Incremental hemodialysis

• A patient starting dialysis with substantial residual kidney function may not need a full thrice-weekly schedule at once; incremental HD — often twice-weekly — leverages that function while it lasts, with close monitoring and a planned step-up as it declines (Chapter 10).

Effective-care versus preference-sensitive decisions

• The organising distinction of this chapter: some decisions are effective-care, where physiology or evidence dictates the answer — ultrafiltration-rate limits, dose targets, vein and access preservation, the gentle first session. Others are preference-sensitive, where reasonable people choose differently based on what they value — modality, in-center versus home, dialysis versus conservative care, continuing versus stopping.
• Naming which kind of decision is in front of you settles who should decide: the clinician leads effective-care, the patient leads preference-sensitive, and confusing the two either overrides values or abandons patients to choices that have a right answer.

Dialysis versus conservative care

• For frail elderly patients with limited prognosis or heavy comorbidity, dialysis may add little good-quality time while adding the burden of transport, sessions, and hospital days. Conservative kidney management — active symptom control without dialysis — is a legitimate, evidence-informed choice, and presenting it honestly is part of good care, not a withdrawal of it.

The shared-decision process

• Shared decision-making moves through choice talk (making the patient aware a real choice exists), option talk (laying out options with natural-frequency numbers, never hazard ratios), and decision talk (eliciting values and deciding together), closed by teach-back to confirm understanding. The patient's values and the agreed plan are documented and revisited as things change.

Withdrawal and end-of-life

• Withdrawal of dialysis is one of the commoner paths to death in this population. When dialysis no longer meets the patient's goals, planned withdrawal with palliative and symptom-focused care is the appropriate course — a shared, documented decision made with the patient and family, and framed as a change of goals rather than an abandonment.

Five fully-built tables.

Table A — The special situations

Table B — Home hemodialysis

Table C — HD versus PD considerations

Table D — Decision types

Table E — The shared-decision steps

Visualise & Map

Numbered rules. These numbers are the cross-reference handle for the cases and flowcharts.

Clinical Reasoning

Five cases. Each stops you at a decision before it answers it.

Exhaustive. Every rule in the chapter is here.

Safety & Evidence

Panel A — Red flags

Panel B — NEVER DO

Anti-patterns clinicians fall into. Each becomes a Level 22 distractor.

The grade reflects strength of evidence, not importance.

Patient Decisions

Outcomes as natural frequencies. Figures are representative; the direction of effect is given where precise numbers are uncertain.

Decisions where the right answer depends on the patient's values, not the evidence.

Effective-care decisions (not preference-sensitive)

• Keeping the ultrafiltration rate within a safe range — evidence dictates it.
• Meeting the dose target and preserving veins and access — standard of care.
• A gentle first session in a severely uremic patient — physiology dictates it.
• Treating an identified complication — the clinical problem dictates it.

The conversation rehearsed as a skill. Numbers trace to Level 14.

Apply & Test

Copy-paste chart notes that map to the real decisions in this chapter.

Template 1 — Modality and values note

• Goals and priorities: ___; frailty/function summary: ___.
• Decision: ___ ; type: effective-care / preference-sensitive.
• Options discussed (HD / PD / home / conservative): ___.
• Numbers shared (natural frequency): ___; patient's stated values: ___.
• Decision reached and by whom; teach-back confirmed: yes/no; revisit when: ___.

Template 2 — Goals-of-care / conservative-care / withdrawal note

• Prognosis and frailty summary: ___.
• Patient's goals and priorities: ___.
• Path chosen: dialysis / conservative care / planned withdrawal.
• Symptom and palliative plan: ___.
• Family involved: yes/no. Review date: ___.

Pre-rounds compression. Rules only.

Active recall. At least one card per objective.

Micro-teaching for rounds. Two scenarios, five steps each.

Metacognition anchored to this chapter's tensions. No answers provided.

1. 1. When a frail patient might do better without dialysis, what makes it hard to say so out loud — and whose discomfort is really driving the silence?
2. 2. Home HD asks more of the patient but gives more back; how do you avoid steering toward the option that is easiest for the unit?
3. 3. How do you present survival numbers honestly to a patient choosing dialysis or conservative care without either steering them or overwhelming them?
4. 4. Withdrawal is common yet rarely discussed early; what would it take to make goals-of-care a routine conversation rather than a crisis one?
5. 5. If a decision is genuinely the patient's to make, how do you sit with a choice you might not have made yourself?

Nine items, each anchored in this chapter. At least one per objective.