Infection prevention and control

Cue 1 Chain of infection as six links, with transmission highlighted as the breakable one.

AMARA 00:00 Everybody has done infection control training. Why has it changed so little?

NADIA 00:04 Because most of it teaches a poster rather than a mechanism. People can recite five moments and still put gloves on at the door and take them off at the sink, which achieves almost nothing.

AMARA 00:18 Start with the mechanism then. The chain of infection.

NADIA 00:22 Six links. An agent, a reservoir it lives in, a way out, a route to somebody else, a way in, and a person susceptible enough for it to matter. Break one link and there is no infection.

Cue 2 Shared equipment as a reservoir: glucometer moving between four residents.

AMARA 00:37 Which link should I be spending my effort on?

NADIA 00:40 Transmission, overwhelmingly. You cannot change the organism. You cannot make an eighty nine year old with heart failure less susceptible this afternoon. What you can do, forty times a shift, is stop carrying it from one person to the next.

AMARA 00:56 And it is carried on hands.

NADIA 00:59 Hands and shared equipment. Hoist slings, blood pressure cuffs, glucometers, commodes. The equipment gets forgotten because it is nobody's named job, and a glucometer moving between four people is a very efficient way of moving an organism between four people.

Cue 3 Standard precautions applied to everybody, with the incubating and colonised person shown unlabelled.

AMARA 01:15 Standard precautions. Explain why they apply to everybody rather than to the people we know are infectious.

NADIA 01:22 Because you cannot tell by looking, and this is not a technicality. Somebody incubating norovirus is infectious before they feel ill. Somebody colonised with MRSA has no symptoms whatsoever. Blood borne viruses are frequently undiagnosed.

AMARA 01:36 So precautions aimed only at known cases...

NADIA 01:38 Protect you from the infections you already know about, which are not the ones spreading through your building. The undiagnosed and the incubating are doing the spreading, and by definition they are not on your list.

Cue 4 Five moments around a bed, with moment five (surroundings) flagged as most missed.

AMARA 01:53 The five moments. Which one gets missed?

NADIA 01:55 The fifth. After touching the person's surroundings. Staff who would never skip washing after personal care will adjust a bed rail, move a locker, silence a call bell, and walk straight to the next bed space.

AMARA 02:10 Is touching a bed rail really equivalent to touching the person?

NADIA 02:14 For this purpose, close enough that the distinction is not worth making. The rail has been touched by the person, by four staff and by two visitors. It is a reservoir, and a reservoir at hand height beside somebody who is unwell.

Cue 5 Gel versus soap decision: visibly clean, soiled, toilet, C. difficile, norovirus.

AMARA 02:31 You said people remember the wrong moments.

NADIA 02:34 They remember the ones that protect themselves. After body fluids, after touching the person. The ones before, which protect the person from your hands, are the ones that slip. From the chair of the person receiving care, that is precisely backwards.

AMARA 02:50 Gel or soap?

NADIA 02:52 Gel is for visibly clean hands and it is excellent, faster and kinder to skin than washing. Soap and running water when hands are soiled, after the toilet, and for C. difficile and norovirus.

Cue 6 Hand coverage heat map: thumbs, fingertips, backs and web spaces missed.

AMARA 03:05 Why do those two defeat alcohol?

NADIA 03:08 Different armour. Alcohol works by wrecking a lipid membrane. C. difficile forms a spore with a tough coat and simply sits there. Norovirus has a protein capsid rather than a lipid envelope. Neither is reliably killed, so you stop trying to kill them and physically wash them down the drain instead.

AMARA 03:28 Technique. Twenty seconds is the number everybody quotes.

NADIA 03:31 Twenty seconds of contact, and then dry properly, which is the half everybody abandons. Wet hands transfer organisms far more readily than dry ones, so a rushed dry undoes a good part of a decent wash.

Cue 7 Bare below the elbow, item by item with the reason attached to each.

AMARA 03:46 Where does coverage fail?

NADIA 03:47 Thumbs, fingertips, backs of hands, between the fingers. Fingertips are the worst of it, because fingertips are what touch people and they get cleaned last and least.

AMARA 03:58 Bare below the elbow. Is that infection control or is it a uniform policy in disguise?

NADIA 04:04 It is infection control, item by item. A watch strap harbours organisms and stops the skin under it being cleaned. A stoned ring does the same. False and gel nails carry higher bacterial counts and have been implicated in real outbreaks. Long sleeves trail across a wound and then across the next person.

AMARA 04:26 Last one. My hands are cracked and washing them hurts.

NADIA 04:30 Then report it today, because that is an infection control problem and not a cosmetic one. Damaged skin cannot be decontaminated properly, it harbours organisms in the fissures, and people with sore hands wash less. Emollient, occupational health, and a look at whether the soap is the wrong one.

Cue 1 Equipment chosen by task, with a meal assistance row showing none required.

AMARA 04:49 Personal protective equipment. What decides what I put on?

NADIA 04:53 The task, and only the task. What are you about to do, and what might you be exposed to while doing it. Not the label on the door and not your impression of the person.

AMARA 05:07 Give me the wrong version of that.

NADIA 05:10 Gloves to help somebody eat their lunch. There is no exposure, the gloves protect nobody, and you have told that person something about how you regard them that they will remember longer than the meal.

Cue 2 Putting on order and removal order side by side, removal flagged as the risk.

AMARA 05:24 Order of putting it on.

NADIA 05:26 Apron, mask, eye protection, gloves. That order is easy and almost never goes wrong. Taking it off is where the harm is.

AMARA 05:34 Why is removal the dangerous half?

NADIA 05:37 Because the outside of everything you are wearing is now the dirtiest surface in the room, and it is about to travel within an inch of your face.

Cue 3 Mask removal: ties and loops correct, front crossed out.

AMARA 05:48 So what is the sequence?

NADIA 05:50 Gloves first, they are filthiest. Hand hygiene. Apron next, break the neck ties and roll it away from you, touching only the inside. Eye protection. Mask last, by the ties or the ear loops. Hand hygiene again.

AMARA 06:05 People pull masks off by the front.

NADIA 06:08 Constantly, and the front is the most contaminated part of it. You have just filtered a room's air through that. Ties or loops, never the front.

Cue 4 Corridor transmission: apron and gloves worn out of the room past six doors.

AMARA 06:18 And the apron and gloves in the corridor?

NADIA 06:21 That is the one that spreads outbreaks. Equipment that was protecting a person becomes a vehicle carrying that person's organisms past six doors. Take it off before you leave the room.

AMARA 06:34 Now defend this: are gloves not simply safer than bare hands?

NADIA 06:38 No, and the evidence runs the other way. Unnecessary glove use is associated with worse hand hygiene.

Cue 5 Glove misuse: one pair, three tasks, two residents, with the missed wash moments marked.

AMARA 06:45 That seems backwards.

NADIA 06:46 It is entirely psychological. Gloves feel clean. So the glove replaces the wash instead of being added to it, and one pair gets worn for three tasks and sometimes two residents. Bare hands that are washed between every task beat one pair of gloves worn for the whole round every single time.

AMARA 07:07 And hands after removing gloves?

NADIA 07:09 Are measurably contaminated, even when the glove was not visibly damaged. So hand hygiene after every removal, without exception. One task, one person, one pair.

Cue 6 Sharps bin at the point of use, temporary closure, fill line.

AMARA 07:19 Sharps. Who disposes of the sharp?

NADIA 07:21 The person who used it. Not the person tidying up, not whoever is on later. And into a bin already within reach before you started, because a walk across a room holding a used needle is how the injuries happen.

AMARA 07:37 Recapping?

NADIA 07:38 Prohibited by the 2013 regulations. There is no version of it that is acceptable.

Cue 7 Waste streams: orange, tiger stripe, black, with the point of production emphasised.

AMARA 07:43 The bin is nearly full.

NADIA 07:45 Then it is closed and replaced, not pressed down. Overfilled bins are a leading cause of injury, and the person injured is usually not the person who overfilled it. That is somebody else carrying your risk.

AMARA 08:00 Waste segregation. Orange, tiger stripe, black. Does the distinction really matter?

NADIA 08:04 It matters because nobody downstream can re sort it. Once a bag is tied, the decision you made is permanent, and it is acted on by people who never saw what went in.

Cue 8 Spillage sequence: protect, don, absorb, disinfect, clean, dispose, wash.

AMARA 08:17 And if I am not certain?

NADIA 08:20 Err cautiously. Over classifying costs money. Under classifying puts a porter or a waste operative at risk of something they had no way of anticipating.

AMARA 08:30 Last one. There is a blood spillage on the floor.

NADIA 08:34 Protect the area so nobody walks through it, gloves and apron, absorb, then the correct disinfectant, usually a chlorine releasing agent for blood. Clean, dispose of all of it as infectious waste, wash your hands.

AMARA 08:48 Can I improvise the dilution?

NADIA 08:50 No. Too weak does nothing and too strong damages the surface and your airway. That is what the spillage kit is for, and it is why it should be somewhere you can find it in the dark.

Cue 1 Two linked cases as the working outbreak threshold, with the laboratory result arriving days later.

AMARA 09:04 When is it an outbreak?

NADIA 09:06 Two or more linked cases in the same place and time. In practice: two people, same new symptoms, same area, close together. Treat it as an outbreak until somebody senior says otherwise.

AMARA 09:19 Should I wait for a laboratory result?

NADIA 09:22 No, and that delay is the commonest failure in the whole subject. Confirmation takes days. Norovirus does not wait for days. By the time you have certainty you have an outbreak instead of two cases.

AMARA 09:36 So what happens in the first hour?

Cue 2 First hour actions on a clock: isolate, soap and water, restrict movement, line list, notify.

NADIA 09:39 Isolate or cohort. Move hand hygiene to soap and water. Stop staff crossing between affected and unaffected areas. Start a line list, on paper if necessary: who, what symptoms, when they started. And notify.

AMARA 09:52 Why does the line list matter so early?

NADIA 09:56 Because it is the only thing that shows you the shape of what is happening. Onset times tell you whether this is one source or person to person spread, and nobody can reconstruct that accurately three days later from memory.

AMARA 10:12 Isolation. We treat it as obviously the right answer.

NADIA 10:15 It is a clinical intervention with side effects, and it is almost always discussed as though it has none. Isolated people are seen less, eat less, fall more, deteriorate less visibly and become low.

Cue 3 Line list revealing single source versus person to person from onset times.

AMARA 10:29 And for somebody with dementia?

NADIA 10:31 It can be severe and lasting. A person who does not understand why the door is closed and why the people who come in look frightening is not simply inconvenienced. So isolate for as long as needed and no longer, with a review date, and plan deliberately for contact.

AMARA 10:50 Meaning?

NADIA 10:51 Somebody going in to talk rather than only to deliver care. A way for family to stay in touch. Write down the review date, because an isolation decision without one becomes permanent by accident.

AMARA 11:04 Let us do the organisms. C. difficile.

Cue 4 Isolation harms panel: seen less, eats less, falls more, mood, dementia impact, with mitigations.

NADIA 11:07 Spores. Alcohol does not reliably kill them, so soap and water for hands, and chlorine releasing agent for surfaces because ordinary detergent leaves them behind.

AMARA 11:17 And the origin of it is usually?

NADIA 11:20 Antibiotics, disturbing the gut flora and letting C. difficile take over. Which is why this connects straight to prescribing, and why it belongs in a conversation about resistance rather than only in one about cleaning.

AMARA 11:34 Norovirus.

NADIA 11:34 Extraordinarily transmissible, survives on surfaces, resists alcohol. And infectious for at least forty eight hours after symptoms stop.

Cue 5 Four organisms and what changes for each, side by side.

AMARA 11:42 That is the rule that gets broken.

NADIA 11:44 Constantly, and always for a sympathetic reason. The service is short, somebody feels better, they come back on day one. Then it runs through the staff group and you lose a fortnight instead of a shift.

AMARA 11:59 MRSA. People are frightened of it.

NADIA 12:01 And it is usually colonisation rather than infection. The person is not ill. Standard precautions and decent hand hygiene are the answer, not a performance.

AMARA 12:11 Does the fear cause harm in itself?

Cue 6 Urine sample decision: confusion alone versus urinary symptoms, with other causes of confusion.

NADIA 12:14 Measurably. People get visibly different treatment, get told less, get touched less, and know exactly what is happening. The label harms them more than the organism does.

AMARA 12:25 Respiratory infections.

NADIA 12:26 Droplets and contaminated surfaces, so respiratory precautions, high touch surfaces, and ventilation. Ventilation is the most neglected control we have and frequently the cheapest. Opening a window is a genuine intervention, not a gesture.

AMARA 12:39 Last section. Antimicrobial resistance. What has a care worker got to do with that?

NADIA 12:45 More than almost anyone realises, and the clearest example is the urine sample. An older person becomes a bit confused. Somebody sends urine, it grows something, an antibiotic starts.

Cue 7 Resistance contributions: hydration, catheter removal, vaccination, completing courses.

AMARA 12:56 That sounds like attentive care.

NADIA 12:58 It sounds like it and frequently it is not. Bacteria in the urine of an older person without urinary symptoms is common and usually means nothing. Treating it does not help the confusion. It does select for resistant organisms and it raises the risk of C. difficile, which can kill them.

AMARA 13:19 So confusion alone is not a reason to send a sample.

NADIA 13:23 Not on its own. Look for actual urinary symptoms, and look hard at the other causes of new confusion, which are frequently dehydration, pain, constipation or a new medicine.

AMARA 13:35 And the rest of the contribution?

NADIA 13:37 Unglamorous and effective. Hydration. Catheter care, and pressing for a catheter to come out the moment it is no longer needed, because every day it stays in is risk. Vaccination. And courses completed as prescribed rather than stopped when somebody feels better or saved in a drawer for next time.