Macrosalb

Macrosalb, the active ingredient in Macrosalb, is a radiopharmaceutical presented as a kit for preparation of radiopharmaceutical solution for intravenous injection for diagnostic imaging use. It is employed to evaluate lung perfusion and to detect pulmonary embolism in patients undergoing nuclear medicine studies.

GNH USA supplies Macrosalb as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals worldwide.

Macrosalb is used in nuclear medicine procedures that assess pulmonary blood flow and related disorders. - Lung perfusion imaging: provides quantitative visualization of regional pulmonary blood flow for functional assessment. - Pulmonary embolism detection: helps identify obstructed vessels caused by emboli during ventilation‑perfusion scans. - Pre‑operative lung assessment: evaluates pulmonary reserve before major thoracic or cardiac surgery.

Common Side Effects: - Mild chest discomfort: transient sensation during or after injection. - Transient cough: brief coughing episode post‑administration. - Low‑grade fever: short‑lived temperature rise. - Headache: mild, self‑limiting. - Nausea: occasional mild nausea. - Injection site pain: brief localized discomfort.

Serious or Rare Side Effects: - Anaphylactic reaction: severe allergic response requiring immediate medical attention. - Pulmonary hypertension: rare increase in pulmonary arterial pressure. - Embolization‑related infarction: unintended blockage causing tissue injury. - Radiation‑induced skin injury: localized skin changes at injection site. - Severe hypotension: sudden drop in blood pressure. - Cardiac arrhythmia: abnormal heart rhythm episodes.

Before using Macrosalb, consider the following precautions: - Patient selection: assess for underlying pulmonary hypertension or severe cardiopulmonary disease. - Pregnancy: avoid unless clearly needed, as fetal exposure to radiation is uncertain. - Breastfeeding: discontinue nursing for an appropriate period after administration. - Thyroid function: evaluate in patients with known thyroid disorders due to iodine content. - Hypersensitivity: confirm no known allergy to albumin or radiopharmaceutical components. - Store at ambient temperature: keep in original packaging, protect from moisture and direct sunlight.

Macrosalb may interact with other agents that affect pulmonary circulation or imaging results. Major Interactions (Avoid): - Anticoagulants: increased risk of bleeding complications. - Pulmonary vasodilators: may alter distribution of macroaggregates. - Concurrent radiopharmaceuticals with overlapping emission spectra: can interfere with image interpretation. Moderate Interactions (Monitor Closely): - Beta‑blockers: may affect heart rate and particle transit. - ACE inhibitors: potential impact on pulmonary vascular tone. - Diuretics: influence intravascular volume and capillary lodging. - Thyroid hormone therapy: may modify iodine handling. - Iodinated contrast agents: could affect radiotracer biodistribution.