Heavy menstrual bleeding is a common gynaecological complaint but it is not always a benign inconvenience. Menorrhagia (heavy menstrual bleeding) severe enough to soak through a pad or tampon every hour for two or more consecutive hours constitutes an emergency. Acute haemorrhage from uterine causes can produce haemodynamic instability (dangerously low blood pressure) and severe anaemia within days. Behind heavy bleeding there may be a ruptured ectopic pregnancy, a miscarriage, or a gynaecological malignancy each requiring a different urgent pathway. At CARE Hospitals, abnormal menstrual bleeding is assessed urgently to distinguish benign heavy periods from life-threatening haemorrhage.

What is Abnormal Menstrual Bleeding?

A normal cycle is 21 to 35 days with bleeding lasting three to seven days and blood loss of 30 to 80 ml. Abnormal uterine bleeding( AUB) is any bleeding outside these parameters.

The PALM-COEIN classification divides AUB into: 

• Structural causes: Includes polyp, adenomyosis, fibroid, malignancy, or hyperplasia
• Non-structural causes: Includes coagulopathy, ovulatory dysfunction, endometrial, and iatrogenic 
• Emergency presentations most often involve fibroids, coagulopathy or pregnancy-related haemorrhage.

Common Causes of Abnormal Menstrual Bleeding

Cause determines urgency and treatment:

• Uterine fibroids (leiomyomas): Benign smooth muscle tumours and the most common structural cause; submucosal fibroids (growing into the uterine cavity) cause the heaviest loss
• Adenomyosis: Endometrial glands growing into the uterine muscle wall cause heavy, painful, prolonged periods and an enlarged tender uterus
• Endometrial polyps: Benign uterine lining overgrowths causing irregular and heavy bleeding
• Hormonal imbalance: Anovulatory cycles (without ovulation), perimenopause, PCOS and thyroid disease cause irregular heavy shedding
• Coagulopathy: von Willebrand disease, platelet disorders, and anticoagulants cause heavy bleeding
• Endometrial hyperplasia or carcinoma: More common after menopause
• Pregnancy complications: Ectopic pregnancy, miscarriage, and placental problems all present as heavy or abnormal vaginal bleeding
• Intrauterine device (IUCD): Copper IUCDs frequently increase blood loss whereas hormonal IUCDs typically reduce it.

Signs and Symptoms of Abnormal Menstrual Bleeding

Symptoms range from manageable to haemodynamically significant:

• Soaking a pad or tampon every hour for two or more consecutive hours 
• Blood clots larger than 2.5 cm 
• Bleeding lasting more than seven days
• Intermenstrual or postcoital bleeding 
• Postmenopausal bleeding (more than 12 months after the last period) 
• Pallor, fatigue, breathlessness and rapid heart rate indicate iron deficiency anaemia or acute haemorrhage
• Dizziness or fainting 
• Severe pelvic pain with heavy bleeding raises suspicion of ectopic pregnancy, miscarriage, or adenomyosis.

First Aid for Abnormal Menstrual Bleeding (Before Reaching Hospital)

First aid is supportive and severe bleeding requires clinical assessment:

• Use maximum-absorbency products and note the rate: Use the most absorbent product and track the change rate. Bring a 24-hour pad count this gives the emergency team a clinical measure of blood loss. Go to the hospital if soaking through every hour for two consecutive hours.
• Lie down and elevate the feet: Lying flat with feet slightly elevated increases blood return to the heart and reduces fainting risk.
• Stay hydrated: Drink water or ORS (oral rehydration solution) to replace circulating volume.
• Take ibuprofen if not contraindicated: Ibuprofen 400 mg three times daily reduces blood loss by inhibiting prostaglandins (chemical messengers driving uterine bleeding). Avoid if pregnancy is possible, or with peptic ulcer disease or kidney disease.
• Do not use a tampon if an ectopic pregnancy is possible: If pregnancy is possible (missed period, positive test, or unprotected intercourse) use pads only and go to the hospital immediately.
• Go to the emergency department immediately: Soaking more than one pad per hour, dizziness, severe pain, or suspected pregnancy with heavy bleeding go immediately.

When to Seek Emergency Care for Abnormal Menstrual Bleeding

Each requires immediate emergency assessment:

• Soaking through a pad or tampon every hour for two or more consecutive hours
• Dizziness, light-headedness, or fainting 
• Heart rate above 100 at rest, pallor, or cold clammy skin 
• Severe lower abdominal or pelvic pain with heavy bleeding 
• Patient on anticoagulants with heavy bleeding
• Postmenopausal bleeding of any volume 
• Heavy bleeding following a positive pregnancy test.

Emergency Treatment at the Hospital for Abnormal Menstrual Bleeding

Treatment targets haemorrhage control, volume restoration and cause investigation:

• Assessment: Doctors check vital signs and perform urine pregnancy test (to exclude ectopic pregnancy) and full blood count. Haemoglobin below 80 g/L with ongoing bleeding indicates transfusion need. Pelvic examination assesses uterine size, tenderness and bleeding source.
• Blood tests: Full blood count, coagulation screen with von Willebrand factor, ferritin, thyroid function and blood group and crossmatch.
• Imaging: Transvaginal ultrasound (TVUS) identifies fibroids, polyps, endometrial thickening (above 4 mm postmenopausally warrants investigation), pelvic free fluid (possible ectopic or miscarriage) and adnexal masses. Serum beta-hCG is measured when an ectopic pregnancy is possible.
• Medical management of acute haemorrhage: Tranexamic acid is given orally or IV to reduce blood loss. IV conjugated oestrogens arrest acute bleeding rapidly. Doctors also correct iron deficiency simultaneously.
• Surgical management: If medical management fails doctors perform intrauterine balloon tamponade, hysteroscopic resection of fibroids or polyps, endometrial ablation (uterine lining destruction), uterine artery embolisation (groin catheter), or hysterectomy as a last resort.
• Blood transfusion: Red cells when haemoglobin is below 80 g/L with symptoms. Fresh frozen plasma and platelets for coagulopathy related haemorrhage.

What Not to Do

These actions delay treatment or worsen bleeding:

• Do not use tampons or internal products if pregnancy is possible 
• Do not take aspirin as it worsens menstrual blood loss instead use ibuprofen or paracetamol
• Do not ignore postmenopausal bleeding 
• Do not assume new or worsening heavy bleeding is a bad period 
• Do not delay if dizziness, fainting, or rapid heart rate accompany heavy bleeding.

Conclusion

Abnormal menstrual bleeding ranges from a manageable nuisance to a life-threatening haemorrhage and the most dangerous presentations can resemble a heavy period. At CARE Hospitals, the emergency gynaecology team assesses heavy bleeding with pregnancy test, blood count, coagulation screen and transvaginal ultrasound on arrival; medical control with tranexamic acid and progestogens is initiated without delay; and surgical intervention is available when medical management is insufficient.

FAQs

1. What is considered heavy menstrual bleeding?

Soaking through a pad every hour for two or more consecutive hours, clots above 2.5 cm, bleeding beyond seven days or loss above 80 ml per cycle are considered menorrhagia.

2. When should menstrual bleeding be treated as an emergency?

Menstrual bleeding turns into an emergency when soaking more than one pad per hour, dizziness or fainting, heart rate above 100 at rest, severe abdominal pain, patient on blood thinners, postmenopausal bleeding, or bleeding following a positive pregnancy test.

3. What causes excessive menstrual bleeding?

Most common causes are:

• Structural causes: fibroids and polyps. 
• Hormonal: anovulatory cycles (PCOS, perimenopause, thyroid disease). 
• Coagulopathy. 

4. Can heavy periods lead to anaemia?

Yes chronic heavy bleeding depletes iron stores, causing iron deficiency anaemia (pallor, fatigue, breathlessness, rapid heart rate). Haemoglobin below 80 g/L with ongoing bleeding requires IV iron and sometimes transfusion.

5. What should I do if menstrual bleeding becomes severe suddenly?

Use the most absorbent product, lie down with feet elevated, note pad change rate, drink fluids, take ibuprofen if not contraindicated and go to the emergency immediately if soaking more than one pad per hour or if dizziness, fainting, or severe pain develops.

6. Is passing large blood clots during periods normal?

Small clots under 2.5 cm are common on heavy days but clots above 2.5 cm consistently passed indicate blood loss exceeding normal anticoagulant capacity in menstrual fluid that warrants gynaecological investigation.

7. When is hospitalisation required for menstrual bleeding?

Hospitalisation is required in case of uncontrollable bleeding, haemoglobin below 80 g/L, haemodynamic compromise, suspected ectopic pregnancy or miscarriage, or need for surgical intervention.

8. Is severe menstrual pain a sign of a serious condition?

Severe dysmenorrhoea (period pain) disproportionate to bleeding particularly if radiating to the pelvis, rectum, or legs raises suspicion for endometriosis (endometrial tissue growing outside the uterus) or adenomyosis. Both require gynaecological investigation.

CARE Medical Team