RGUHS 3rd BSc MLT cytology preparation of smear staining gastrointestinal respiratory urinary tract syllabus

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~/cytology-ppt/cytology_ppt.js

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pres.title = 'Cytology - Preparation of Smear and Staining';
pres.author = '3rd BSc MLT - RGUHS';

// ─────────────────────────────────────────────────────────────────────────────
// THEME
// ─────────────────────────────────────────────────────────────────────────────
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// ─────────────────────────────────────────────────────────────────────────────
// SLIDE 1 — Title Slide
// ─────────────────────────────────────────────────────────────────────────────
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  s.addText('3rd Year B.Sc. MLT  |  Rajiv Gandhi University of Health Sciences', {
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// ─────────────────────────────────────────────────────────────────────────────
// SLIDE 2 — Contents Overview
// ─────────────────────────────────────────────────────────────────────────────
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    { num: '01', label: 'Introduction to Cytology', color: C.accent },
    { num: '02', label: 'General Principles of Smear Preparation', color: C.midBlue },
    { num: '03', label: 'Gastrointestinal Tract — Specimen Collection & Smear Preparation', color: C.sectionGI },
    { num: '04', label: 'Gastrointestinal Tract — Staining Methods', color: C.sectionGI },
    { num: '05', label: 'Respiratory Tract — Specimen Collection & Smear Preparation', color: C.sectionRE },
    { num: '06', label: 'Respiratory Tract — Staining Methods', color: C.sectionRE },
    { num: '07', label: 'Urinary Tract — Specimen Collection & Smear Preparation', color: C.sectionUR },
    { num: '08', label: 'Urinary Tract — Staining Methods', color: C.sectionUR },
    { num: '09', label: 'Comparison Summary', color: C.orange },
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// ─────────────────────────────────────────────────────────────────────────────
// SLIDE 3 — Introduction to Cytology
// ─────────────────────────────────────────────────────────────────────────────
contentSlide(pres, 'Introduction to Cytology', [
  { type: 'heading', text: 'Definition' },
  { type: 'normal', text: 'Cytology is the microscopic study of individual cells obtained from various body sites to detect disease, especially malignancy.' },
  { type: 'heading', text: 'Types of Cytology' },
  { type: 'normal', text: 'Exfoliative Cytology: Study of cells shed naturally from body surfaces (sputum, urine, GI washings).' },
  { type: 'normal', text: 'Fine Needle Aspiration Cytology (FNAC): Cells aspirated by needle from solid organs.' },
  { type: 'normal', text: 'Imprint / Touch Cytology: Direct impression smears from tissue surfaces.' },
  { type: 'heading', text: 'Applications in MLT' },
  { type: 'normal', text: 'Cancer screening and early diagnosis.' },
  { type: 'normal', text: 'Monitoring response to therapy.' },
  { type: 'normal', text: 'Diagnosis of inflammatory and infective conditions.' },
  { type: 'heading', text: 'Tracts Covered (RGUHS Syllabus)' },
  { type: 'normal', text: 'Gastrointestinal Tract (GIT), Respiratory Tract, Urinary Tract.' },
], C.accent);

// ─────────────────────────────────────────────────────────────────────────────
// SLIDE 4 — General Principles of Smear Preparation
// ─────────────────────────────────────────────────────────────────────────────
contentSlide(pres, 'General Principles of Smear Preparation', [
  { type: 'heading', text: 'Requirements' },
  { type: 'normal', text: 'Clean, grease-free glass slides (pre-labelled with pencil on frosted end).' },
  { type: 'normal', text: 'Applicator sticks, cytobrush, spatula, or syringe as required.' },
  { type: 'normal', text: 'Fixative: 95% ethyl alcohol or Carnoy\'s fixative for wet-fixed smears; air-dry for Romanowsky stains.' },
  { type: 'heading', text: 'General Steps' },
  { type: 'normal', text: 'Step 1: Label slide with patient ID, date, and specimen type.' },
  { type: 'normal', text: 'Step 2: Place appropriate amount of material on the centre of the slide.' },
  { type: 'normal', text: 'Step 3: Spread evenly with another slide or spatula in one smooth motion — avoid thick or uneven films.' },
  { type: 'normal', text: 'Step 4: Fix immediately (within 30 seconds) for wet fixation, or air-dry for Giemsa/MGG staining.' },
  { type: 'heading', text: 'Good Smear Characteristics' },
  { type: 'normal', text: 'Thin, even cellular distribution; neither too thick nor too scanty; cells intact without distortion.' },
], C.midBlue);

// ─────────────────────────────────────────────────────────────────────────────
// SECTION — GASTROINTESTINAL TRACT
// ─────────────────────────────────────────────────────────────────────────────
sectionHeader(pres, 'Gastrointestinal Tract', 'Specimen Collection, Smear Preparation & Staining', C.sectionGI, C.teal);

contentSlide(pres, 'GIT — Specimen Collection', [
  { type: 'heading', text: 'Types of Specimens' },
  { type: 'normal', text: 'Esophageal washings / brushings (via endoscope).' },
  { type: 'normal', text: 'Gastric lavage / gastric washings — collected after overnight fasting.' },
  { type: 'normal', text: 'Endoscopic brushing specimens from stomach, duodenum, and colon.' },
  { type: 'normal', text: 'Rectal scraping / mucosal biopsy imprints.' },
  { type: 'heading', text: 'Gastric Washings — Collection Procedure' },
  { type: 'normal', text: '1. Patient fasts overnight (8-12 hours).' },
  { type: 'normal', text: '2. Ryle\'s tube inserted into stomach via nasogastric route.' },
  { type: 'normal', text: '3. 200 ml of 0.9% normal saline is introduced and withdrawn by gentle aspiration.' },
  { type: 'normal', text: '4. Collected fluid transferred immediately to the laboratory in ice.' },
  { type: 'heading', text: 'Endoscopic Brush Cytology' },
  { type: 'normal', text: 'Cytobrush passed through endoscope; area of interest brushed firmly.' },
  { type: 'normal', text: 'Brush smeared directly onto labelled slides; fixed immediately.' },
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contentSlide(pres, 'GIT — Preparation of Smear', [
  { type: 'heading', text: 'From Gastric Lavage Fluid' },
  { type: 'normal', text: 'Step 1: Centrifuge at 1500 rpm for 5 minutes.' },
  { type: 'normal', text: 'Step 2: Discard supernatant; use sediment for smear preparation.' },
  { type: 'normal', text: 'Step 3: Place one drop of sediment on a clean glass slide.' },
  { type: 'normal', text: 'Step 4: Using another slide at 45° angle, spread gently to form a thin, uniform film.' },
  { type: 'normal', text: 'Step 5: Fix immediately in 95% ethyl alcohol for 15-30 minutes (for Pap stain) OR air-dry (for MGG stain).' },
  { type: 'heading', text: 'From Endoscopic Brushings' },
  { type: 'normal', text: 'Roll the brush gently on the slide surface — avoid back-and-forth smearing.' },
  { type: 'normal', text: 'Make 2-3 smears per case; fix one in alcohol, air-dry the other.' },
  { type: 'heading', text: 'Important Notes' },
  { type: 'normal', text: 'Prepare smears within 30 minutes of collection to prevent cell degeneration.' },
  { type: 'normal', text: 'Thick smears lead to poor staining and difficult interpretation.' },
], C.sectionGI);

twoColSlide(pres, 'GIT — Staining Methods',
  [
    { type: 'heading', text: 'Papanicolaou (Pap) Stain' },
    { type: 'normal', text: 'Preferred stain for GIT cytology.' },
    { type: 'normal', text: 'Requires wet-fixed smear in 95% ethanol.' },
    { type: 'normal', text: '1. Rehydrate through graded alcohols (100%-70%-water).' },
    { type: 'normal', text: '2. Haematoxylin — 4 mins (nuclear stain).' },
    { type: 'normal', text: '3. Rinse, blue in running tap water.' },
    { type: 'normal', text: '4. OG-6 (Orange G) — 1.5 mins (cytoplasmic).' },
    { type: 'normal', text: '5. EA-36 or EA-50 — 3 mins (polychromatic).' },
    { type: 'normal', text: '6. Dehydrate, clear in xylene, mount in DPX.' },
    { type: 'normal', text: 'Results: Nuclei — blue/black; superficial cells — orange-pink; intermediate cells — green/blue.' },
  ],
  [
    { type: 'heading', text: 'May-Grünwald Giemsa (MGG) Stain' },
    { type: 'normal', text: 'Used on air-dried smears.' },
    { type: 'normal', text: '1. Air-dry smear completely.' },
    { type: 'normal', text: '2. Fix in absolute methanol — 3-5 mins.' },
    { type: 'normal', text: '3. May-Grünwald stain (undiluted) — 3 mins.' },
    { type: 'normal', text: '4. Dilute with equal parts buffer pH 6.8 — 1 min.' },
    { type: 'normal', text: '5. Giemsa stain (1:10 dilution) — 10-15 mins.' },
    { type: 'normal', text: '6. Rinse gently, air-dry, mount.' },
    { type: 'normal', text: 'Results: Nuclei — dark purple/blue; cytoplasm — pink/blue; mucus — pale blue.' },
    { type: 'heading', text: 'H&E Stain (Alternative)' },
    { type: 'normal', text: 'Used for rapid diagnosis; nuclei blue, cytoplasm pink.' },
  ],
  C.sectionGI
);

// ─────────────────────────────────────────────────────────────────────────────
// SECTION — RESPIRATORY TRACT
// ─────────────────────────────────────────────────────────────────────────────
sectionHeader(pres, 'Respiratory Tract', 'Specimen Collection, Smear Preparation & Staining', C.sectionRE, C.accent);

contentSlide(pres, 'Respiratory Tract — Specimen Collection', [
  { type: 'heading', text: 'Types of Specimens' },
  { type: 'normal', text: 'Sputum: Most common; collected in early morning (post-cough).' },
  { type: 'normal', text: 'Bronchial Washings: Collected via bronchoscope using saline lavage.' },
  { type: 'normal', text: 'Bronchial Brushings: Cytobrush passed through bronchoscope over lesion.' },
  { type: 'normal', text: 'Bronchoalveolar Lavage (BAL): Large volume saline instilled and aspirated from alveoli.' },
  { type: 'normal', text: 'Fine Needle Aspiration (FNAC): For peripheral lung masses (CT-guided).' },
  { type: 'heading', text: 'Sputum Collection (Deep Cough Method)' },
  { type: 'normal', text: '1. Patient instructed to rinse mouth with water before collection.' },
  { type: 'normal', text: '2. Deep cough specimen (not saliva) — 5-10 ml collected into wide-mouth container.' },
  { type: 'normal', text: '3. Best time: first morning specimen (highest cell concentration).' },
  { type: 'normal', text: '4. Consecutive 3-day samples improve diagnostic yield significantly.' },
  { type: 'heading', text: 'Induced Sputum' },
  { type: 'normal', text: 'Hypertonic saline (3-5%) nebulised for 15-20 mins to induce sputum in non-productive cough cases.' },
], C.sectionRE);

contentSlide(pres, 'Respiratory Tract — Preparation of Smear', [
  { type: 'heading', text: 'Direct Smear from Sputum' },
  { type: 'normal', text: 'Step 1: Examine specimen macroscopically — select blood-tinged, opaque, or cheesy portions (most cellular).' },
  { type: 'normal', text: 'Step 2: Using two applicator sticks or spatulas, spread selected material onto slide.' },
  { type: 'normal', text: 'Step 3: Apply gentle spreading motion (push-pull technique) to achieve thin, even smear.' },
  { type: 'normal', text: 'Step 4: Prepare at least 2 smears per specimen.' },
  { type: 'normal', text: 'Step 5: Fix immediately in 95% ethanol for Pap stain; air-dry the second slide for MGG.' },
  { type: 'heading', text: 'Smear from Bronchial Washings / BAL' },
  { type: 'normal', text: 'Step 1: Centrifuge at 1500-2000 rpm for 10 minutes.' },
  { type: 'normal', text: 'Step 2: Remove supernatant; resuspend pellet in small volume of saline.' },
  { type: 'normal', text: 'Step 3: Spread 1-2 drops of sediment on slide; fix in 95% ethanol.' },
  { type: 'normal', text: 'Cytocentrifuge (Cytospin) method preferred for uniform monolayer preparations.' },
  { type: 'heading', text: 'Mucolytic Treatment (if mucoid)' },
  { type: 'normal', text: 'Dithiothreitol (DTT) or N-acetylcysteine added to liquefy mucus before centrifugation.' },
], C.sectionRE);

twoColSlide(pres, 'Respiratory Tract — Staining Methods',
  [
    { type: 'heading', text: 'Papanicolaou (Pap) Stain' },
    { type: 'normal', text: 'Gold standard for respiratory cytology.' },
    { type: 'normal', text: '1. Wet fix in 95% ethanol (min 15 min).' },
    { type: 'normal', text: '2. Run through graded alcohols downward to water.' },
    { type: 'normal', text: '3. Haematoxylin — 4 mins; differentiate in 0.5% HCl alcohol briefly.' },
    { type: 'normal', text: '4. Blue in running water for 10 mins.' },
    { type: 'normal', text: '5. OG-6 — 1.5 mins; rinse with 95% alcohol.' },
    { type: 'normal', text: '6. EA-36 or EA-50 — 2-3 mins; rinse.' },
    { type: 'normal', text: '7. Dehydrate through 95%-100% alcohol; clear xylene; coverslip with DPX.' },
    { type: 'normal', text: 'Results: Nuclei — blue-black; keratinised cells — bright orange; non-keratinised — cyanophilic (green-blue).' },
  ],
  [
    { type: 'heading', text: 'Ziehl-Neelsen (ZN) Stain' },
    { type: 'normal', text: 'Used specifically to detect Mycobacterium tuberculosis in sputum.' },
    { type: 'normal', text: '1. Air-dry smear; heat-fix.' },
    { type: 'normal', text: '2. Flood with Carbol fuchsin; gently heat until steam rises (3 mins).' },
    { type: 'normal', text: '3. Decolourise with 20% H2SO4 or 3% HCl-alcohol until no more colour runs.' },
    { type: 'normal', text: '4. Counterstain with Methylene blue — 30-60 seconds.' },
    { type: 'normal', text: '5. Wash, dry, examine.' },
    { type: 'normal', text: 'Results: AFB (TB) — red/magenta rods; background — blue.' },
    { type: 'heading', text: 'Periodic Acid-Schiff (PAS)' },
    { type: 'normal', text: 'For fungal organisms (Aspergillus, PCP) and mucin.' },
    { type: 'normal', text: 'Fungi stain bright magenta/red against green counterstain.' },
  ],
  C.sectionRE
);

// ─────────────────────────────────────────────────────────────────────────────
// SECTION — URINARY TRACT
// ─────────────────────────────────────────────────────────────────────────────
sectionHeader(pres, 'Urinary Tract', 'Specimen Collection, Smear Preparation & Staining', C.sectionUR, C.orange);

contentSlide(pres, 'Urinary Tract — Specimen Collection', [
  { type: 'heading', text: 'Types of Specimens' },
  { type: 'normal', text: 'Voided urine (midstream clean catch) — most common.' },
  { type: 'normal', text: 'Catheterised urine — for patients unable to void naturally.' },
  { type: 'normal', text: 'Bladder washings / barbotage — saline instilled into bladder via catheter and aspirated.' },
  { type: 'normal', text: 'Ureteral urine — collected separately via cystoscopy.' },
  { type: 'normal', text: 'Ileal conduit fluid — in patients with urinary diversion.' },
  { type: 'heading', text: 'Voided Urine Collection Protocol' },
  { type: 'normal', text: '1. Discard first morning sample (cells degenerate overnight).' },
  { type: 'normal', text: '2. Collect second or subsequent voiding (50-100 ml) in clean container.' },
  { type: 'normal', text: '3. Process immediately or add equal volume of 50% ethanol as fixative for storage.' },
  { type: 'normal', text: '4. Collect 3 samples on consecutive days for best diagnostic sensitivity.' },
  { type: 'heading', text: 'Important Consideration' },
  { type: 'normal', text: 'Urothelial cells degenerate rapidly — process within 1-2 hours of collection. Do NOT refrigerate without fixative.' },
], C.sectionUR);

contentSlide(pres, 'Urinary Tract — Preparation of Smear', [
  { type: 'heading', text: 'Method 1: Centrifugation Method (Routine)' },
  { type: 'normal', text: 'Step 1: Transfer 10-15 ml of urine into centrifuge tube.' },
  { type: 'normal', text: 'Step 2: Centrifuge at 1500 rpm for 5-10 minutes.' },
  { type: 'normal', text: 'Step 3: Discard supernatant, leaving approx. 0.5 ml sediment.' },
  { type: 'normal', text: 'Step 4: Re-suspend pellet by gentle flicking.' },
  { type: 'normal', text: 'Step 5: Place 1-2 drops of sediment on a clean, labelled slide.' },
  { type: 'normal', text: 'Step 6: Spread with another slide or coverslip; fix in 95% ethanol immediately.' },
  { type: 'heading', text: 'Method 2: Cytocentrifuge (Cytospin) Method (Preferred)' },
  { type: 'normal', text: 'Provides superior monolayer preparation with less cell distortion.' },
  { type: 'normal', text: '1. Load 0.5-1 ml of urine sediment into cytospin chamber.' },
  { type: 'normal', text: '2. Centrifuge at 600-800 rpm for 5 minutes.' },
  { type: 'normal', text: '3. Cells deposit in a defined spot on slide; fix immediately in 95% ethanol.' },
  { type: 'heading', text: 'Method 3: Membrane Filter Method' },
  { type: 'normal', text: 'Urine filtered through Millipore membrane; membrane mounted on slide and stained — preserves all cells.' },
], C.sectionUR);

twoColSlide(pres, 'Urinary Tract — Staining Methods',
  [
    { type: 'heading', text: 'Papanicolaou (Pap) Stain' },
    { type: 'normal', text: 'Stain of choice for urine cytology.' },
    { type: 'normal', text: '1. Wet-fix in 95% ethanol for 15 mins.' },
    { type: 'normal', text: '2. Rehydrate through graded alcohols to water.' },
    { type: 'normal', text: '3. Haematoxylin — 3-4 mins; rinse; differentiate.' },
    { type: 'normal', text: '4. Blue in running water — 10 mins.' },
    { type: 'normal', text: '5. OG-6 — 1.5 mins; 3 changes 95% alcohol.' },
    { type: 'normal', text: '6. EA-36 — 2-3 mins; rinse in 95% alcohol.' },
    { type: 'normal', text: '7. Absolute alcohol, xylene, DPX coverslip.' },
    { type: 'normal', text: 'Results: Urothelial cells — cyanophilic cytoplasm; nuclei — blue-black; degenerate cells — pale or pyknotic.' },
  ],
  [
    { type: 'heading', text: 'Haematoxylin & Eosin (H&E)' },
    { type: 'normal', text: 'Quick and easy; used in many laboratories.' },
    { type: 'normal', text: 'Nuclei stain blue; cytoplasm pink/red.' },
    { type: 'normal', text: 'Good for identifying tumour cells and inflammatory cells.' },
    { type: 'heading', text: 'Leishman / Romanowsky Stain' },
    { type: 'normal', text: 'Used on air-dried smears.' },
    { type: 'normal', text: 'Identifies red cells, WBC, casts, and microorganisms.' },
    { type: 'normal', text: 'Nuclear details less clear compared to Pap stain.' },
    { type: 'heading', text: 'Giemsa Stain' },
    { type: 'normal', text: 'Useful for detecting intranuclear viral inclusions (e.g., CMV, HPV koilocytes).' },
    { type: 'normal', text: 'Nuclei dark blue; cytoplasm pale blue-pink.' },
  ],
  C.sectionUR
);

// ─────────────────────────────────────────────────────────────────────────────
// SLIDE — Comparison Summary Table
// ─────────────────────────────────────────────────────────────────────────────
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      { text: 'Respiratory Tract', options: { bold: true, color: C.white, fill: C.sectionRE } },
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    ['Specimen', 'Gastric lavage, Brushing', 'Sputum, BAL, Brushing', 'Voided urine, Catheter urine'],
    ['Container', 'Sterile jar on ice', 'Wide-mouth sterile jar', 'Clean dry container'],
    ['Processing', 'Centrifuge 1500 rpm/5 min', 'Direct + centrifuge', 'Centrifuge/Cytospin'],
    ['Fixation', '95% Ethanol (wet fix)', '95% Ethanol / Air-dry', '95% Ethanol (wet fix)'],
    ['Preferred Stain', 'Pap stain / MGG', 'Pap stain / ZN (TB)', 'Pap stain / H&E'],
    ['Special Stain', 'PAS (mucin/fungi)', 'ZN, PAS, GMS', 'Giemsa (viral inclusions)'],
    ['Normal Cells', 'Columnar, goblet cells', 'Bronchial cells, alveolar macrophages', 'Urothelial (transitional) cells'],
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// SLIDE — Key Points / Take-Home Messages
// ─────────────────────────────────────────────────────────────────────────────
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  { type: 'normal', text: 'Process all specimens within 30-60 minutes of collection to prevent cellular degeneration.' },
  { type: 'normal', text: 'Always label slides at the frosted end with pencil (not pen — ink washes off in staining).' },
  { type: 'heading', text: 'Fixation' },
  { type: 'normal', text: 'Wet fixation in 95% ethanol is used for Pap staining — prevents air-drying artefact.' },
  { type: 'normal', text: 'Air-drying is required for Romanowsky stains (MGG, Giemsa, Leishman).' },
  { type: 'normal', text: 'Never air-dry a smear intended for Pap staining — causes nuclear enlargement and pale staining.' },
  { type: 'heading', text: 'Staining Choice' },
  { type: 'normal', text: 'Pap stain: Best nuclear detail — preferred for malignancy screening.' },
  { type: 'normal', text: 'MGG / Giemsa: Better for cytoplasmic details, mucus, microorganisms.' },
  { type: 'normal', text: 'ZN stain: Exclusively for AFB (Tuberculosis) in sputum.' },
  { type: 'heading', text: 'RGUHS Exam Tips' },
  { type: 'normal', text: 'Know the step-by-step procedure for each stain; fixation details are commonly asked.' },
  { type: 'normal', text: 'Normal cytology findings per tract and expected colour results are frequently tested.' },
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// ─────────────────────────────────────────────────────────────────────────────
// FINAL SLIDE — Thank You
// ─────────────────────────────────────────────────────────────────────────────
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// ─────────────────────────────────────────────────────────────────────────────
// SAVE
// ─────────────────────────────────────────────────────────────────────────────
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