Nurses Note

🩷 Ovulation — Quick Nursing Review

Ovulation is the release of a mature oocyte from an ovarian follicle and is mainly triggered by the LH surge.

🥚 Quick sequence:
Follicle develops → Oestrogen rises → LH surge → Ovulation → Corpus luteum → Progesterone rises

📌 Key points:
• Ovulation does not always occur on day 14.
• It generally occurs around 12–14 days before the next menstrual period.
• Fertilisation most commonly occurs in the ampulla of the uterine tube.
• S***m may survive for up to about 5 days under favourable conditions.
• The released oocyte is usually fertilisable for approximately 12–24 hours.
• Urinary LH kits, cervical mucus changes and cycle tracking can help identify the fertile period.

🧠 Remember: Day 14 is an example—not a rule. Ovulation timing can vary between individuals and from cycle to cycle.

🩺 STOMA BAG — Quick Nursing Review
🔹 Stoma: Surgically created opening for stool or urine drainage
🔹 Types: Colostomy • Ileostomy • Urostomy
🔹 Healthy stoma: Pink/red • Moist • Functioning
🔹 Assess: Colour • Size • Shape • Output • Peristomal skin • Pouch fit
🔹 Care: Clean gently • Dry thoroughly • Fit barrier correctly • Secure pouch
🔹 Monitor: Output, leakage, skin condition, hydration and electrolytes when relevant
🔹 Red flags: Dusky/black stoma, significant bleeding, severe pain, concerning absent output, very high ileostomy output or signs of dehydration
🔹 Patient care: Encourage independence, dignity and psychological support
🔹 Document: Stoma appearance, output, skin condition and care provided
🧠 Remember:
ASSESS → CLEAN → DRY → FIT → SECURE → MONITOR → DOCUMENT

🧬 Human Reproductive System — Quick Nursing Review
From s***m and ova production to hormones, fertilisation, implantation and pregnancy, understanding the reproductive system is an essential part of anatomy and physiology. 👩‍⚕️📚
♂️ Male: Te**es → Epididymis → Vas deferens → Ejaculatory duct → Urethra
♀️ Female: O***y → Uterine tube → Uterus → Cervix → Va**na
🧪 Key hormones: FSH, LH, oestrogen, progesterone & testosterone
🤰 Fertilisation: Usually occurs in the ampulla of the uterine tube
📌 Remember: FSH and LH are produced by the anterior pituitary.
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🫀 Haemodynamic Equations Every Nurse Should Know!
Understanding haemodynamics helps nurses connect the numbers on the monitor with what is actually happening to cardiac function, circulation and tissue perfusion. 💉❤️
📌 Quick formula review:
❤️ Cardiac Output (CO) = HR × SV
📊 Cardiac Index (CI) = CO ÷ BSA
💓 Stroke Volume (SV) = EDV − ESV
🩸 MAP ≈ (SBP + 2 × DBP) ÷ 3
🔄 SVR = [(MAP − CVP) ÷ CO] × 80
🫁 PVR = [(mPAP − PAWP) ÷ CO] × 80
These equations are especially useful when learning critical care, cardiac nursing and haemodynamic monitoring.
🧠 Study tip: Don’t just memorise the formulas—understand what happens when preload, afterload, contractility, heart rate or vascular resistance changes.
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🩸 Mentzer Index — Iron Deficiency Anaemia vs Thalassaemia Trait
Microcytic anaemia with a low MCV can occur in both iron deficiency anaemia and thalassaemia trait. The Mentzer Index is a simple screening calculation that can help differentiate between them.
🧮 Mentzer Index = MCV ÷ RBC count
🔹 < 13 → suggests thalassaemia trait
🔸 > 13 → suggests iron deficiency anaemia
📌 Remember:
• Thalassaemia trait → low MCV with a relatively normal/high RBC count
• Iron deficiency → low MCV with a lower RBC count and typically low ferritin
• The Mentzer Index is a screening aid, not a diagnostic test. Results should be interpreted alongside the FBC, ferritin/iron studies, clinical history and, when indicated, haemoglobin analysis.
💡 Quick memory:
Low MCV + High RBC → Think Thalassaemia
Low MCV + Low RBC → Think Iron Deficiency

🚨 Emergency Room Nursing — Every Second Matters
Emergency nursing is all about rapid recognition, systematic assessment, immediate intervention and continuous reassessment. 🩺⚡
🔴 Triage → Identify who needs urgent or immediate care
🟠 ABCDE → Airway • Breathing • Circulation • Disability • Exposure
🟢 Vital signs → Watch the trend, not just one reading
🟣 Neurological assessment → GCS, pupils and changes in consciousness
❤️ Cardiac monitoring → Interpret the rhythm together with the patient’s pulse and clinical condition
🦠 Sepsis → Recognise deterioration early and follow the local pathway
🚑 Trauma → Treat life-threatening problems as they are identified
🧪 Investigations → Guided by the patient’s presentation
🧤 Infection prevention → Standard precautions + additional precautions when indicated
🧠 Emergency Nursing Priority:
Recognise → ABCDE → Intervene → Monitor → Reassess → Escalate → Communicate → Document
In emergency care, assessment is never a one-time event—reassessment is essential because the patient’s condition can change rapidly.

🫀 Liver Functions — Know This Essential Organ!
The liver is a metabolic powerhouse with hundreds of roles that help keep the body functioning normally. From processing nutrients to producing bile and essential proteins, its functions are vital for everyday health. 🩺
🔑 Major functions include:
• Metabolism & detoxification
• Bile production
• Albumin and clotting-factor synthesis
• Blood glucose regulation
• Fat metabolism
• Storage of glycogen, iron, copper & vitamins
• Immune defence through Kupffer cells
• Bilirubin metabolism and elimination
🧠 Quick Recall:
LIVER = Metabolise • Detoxify • Make bile • Make proteins • Store nutrients • Regulate glucose
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💊 Antacids — Quick Nursing Guide
Antacids are commonly used to provide short-term relief from excess stomach acidity. They work by neutralising gastric acid and increasing stomach pH, helping relieve symptoms such as heartburn, acid indigestion and dyspepsia.
📌 Key nursing points: • Common types include calcium carbonate, magnesium hydroxide, aluminium hydroxide and sodium bicarbonate.
• Magnesium salts may cause diarrhoea, while aluminium salts commonly cause constipation.
• Antacids can alter the absorption of other medicines, so medicine timing and interactions should always be checked.
• Assess symptoms, relevant medical history and renal function when appropriate.
• Monitor effectiveness and adverse effects.
• Persistent symptoms, GI bleeding, difficulty swallowing, unexplained weight loss or severe/persistent chest pain require medical assessment.
🧠 Remember: Antacids relieve symptoms—they do not treat every underlying cause of reflux or abdominal discomfort.