Dawaa Reference

Clinical reference

Ventricular septal defect

Treatment options, dosing, cautions and Egyptian brands from the shipped Dawaa Reference card.

Evidence status

Checked against the sources named below

Sources3 sources

ICPC-3 (WONCA International Classification of Primary Care, 3rd edition) class KD55.01 - condition scope only, no dose · No dose - referral pathway, no medicine given in primary care · Ventricular Septal Defect - StatPearls - NCBI Bookshelf - https://www.ncbi.nlm.nih.gov/books/NBK470330/

Verified against2 documents
  • No dose - referral pathway, no medicine given in primary care
  • Ventricular septal defect - disease-level clinical article (ventricular-septal-defect-clinical.txt)

Verified date2026-08

Presentation reference

Is it this?

Reference only, to read alongside your own examination.

Symptoms — what the patient reports (7)

  • A small defect is usually silent and found by chance on a routine exam
  • A medium-sized defect tends to become symptomatic later in childhood with mild heart failure
  • A large defect causes heart failure early in childhood
  • Eisenmenger syndrome brings cyanosis, breathlessness, fainting, and finger clubbing [breathlessness · cyanosis · finger clubbing · syncope]
  • Red flag: it can also be acquired, as a rupture of the septum, after severe ischaemic or inflammatory disease [ischaemia]
  • It is the commonest heart malformation in children, and in adults second only to a bicuspid aortic valve
  • Red flag: many close by themselves, but a large one that stays open brings lung artery hypertension, Eisenmenger syndrome, failing ventricles and arrhythmia [arrhythmia · hypertension]

Signs — what you find (6)

  • A pansystolic murmur heard best at the lower left sternal border [heart murmur]
  • A small defect gives a harsh, loud murmur, while a large one gives a softer murmur [heart murmur]
  • Handgrip exercise, which raises afterload, makes the murmur louder [heart murmur]
  • A decrescendo diastolic murmur with a wide pulse pressure suggests coexisting aortic regurgitation [heart murmur]
  • In Eisenmenger syndrome the usual VSD murmur can disappear while the pulmonic component of the second heart sound grows louder [heart murmur]
  • Rarely the hole runs from the left ventricle into the right atrium instead of into the right ventricle

Tests (5)

  • Color Doppler echocardiography detects up to 95 percent of defects
  • The ECG is normal in about half of patients with a VSD
  • Chest x-ray looks normal with a small defect but shows an enlarged heart with a larger one
  • Cardiac MRI or CT are used when the anatomy is complex or poorly seen on standard echocardiography
  • Catheterization measures how much resistance the lung vessels offer and how that responds to vasodilator drugs, useful before surgery is planned

If not this — what else fits (7)

  • Atrioventricular septal defect is on the differential
  • Atrial septal defect is another structural mimic
  • A patent ductus arteriosus can present similarly
  • Tetralogy of Fallot is included in the differential
  • Progression to Eisenmenger syndrome is itself listed among the differentials
  • Infective endocarditis should be considered
  • Myocarditis is also on the differential list

SourceStatPearls "Ventricular Septal Defect" - disease-level clinical article

Presentation findings are traced to the source above.

1

NO DRUG THERAPY IN PRIMARY CARE (REFERRAL & ADVICE)

1st line
Adult dose and duration

Ventricular septal defect ranges from small defects that close spontaneously to large defects causing heart failure in infancy; the GP recognises the murmur or failure-to-thrive picture and refers to paediatric cardiology, which directs any heart-failure medication and the surgical decision. - Refer, with advice

Paediatric dose

Children follow the same pathway: recognise and refer. No primary-care medicine is implied.

Dose source

No dose - referral pathway, no medicine given in primary care

Why

Ventricular septal defect ranges from small defects that close spontaneously to large defects causing heart failure in infancy; the GP recognises the murmur or failure-to-thrive picture and refers to paediatric cardiology, which directs any heart-failure medication and the surgical decision.

Cautions
  • Poor feeding, sweating with feeds, fast breathing, or failure to thrive in an infant with a murmur suggests a large defect needing urgent referral.
  • No medicine is prescribed for this in primary care - this entry is for recognition and referral. Anything given is decided by the service it is referred to.
  • RED FLAG - Irreversible pulmonary arterial hypertension (Eisenmenger syndrome) is a primary contraindication for surgical VSD closure.

Prices are indicative (dataset snapshot 2026-06); verify with the pharmacy.