Lung Cancer nursing care: what to assess and what to do first

Recognising it at the bedside

The symptom that matters most is a cough that has changed, in duration, in sound, or in what it produces, in someone with a significant smoking history. A smoker's cough that has been stable for years and then worsens, becomes productive of blood-tinged sputum, or takes on a new quality is not background noise, it is the finding that should trigger a chest X-ray and referral.

Other presentations include unexplained weight loss, persistent chest pain, hoarseness from recurrent laryngeal nerve involvement, and dyspnoea disproportionate to any known lung disease. Haemoptysis, even a small amount, warrants the same seriousness as the changed cough.

Because early lung cancer is frequently asymptomatic or presents with vague, nonspecific complaints, the nurse's role in taking a thorough smoking and occupational exposure history is often what surfaces the concern before imaging does.

Why the classic presentation misleads

Textbook teaching leans heavily on cough, haemoptysis, and weight loss, but a meaningful subset of patients present through paraneoplastic syndromes that look nothing like a respiratory illness. Small cell lung cancer in particular can cause SIADH, producing hyponatraemia, confusion, and seizures, or ectopic ACTH production causing Cushing's features, with no cough mentioned at all.

Hypercalcaemia from PTHrP secretion, most associated with squamous cell carcinoma, can present as constipation, confusion, and polyuria, symptoms a busy unit might attribute to dehydration or an unrelated cause. Lambert-Eaton myasthenic syndrome causes proximal muscle weakness that can be mistaken for a primary neurological disorder.

The practical implication is that unexplained electrolyte disturbance or new neurological or endocrine symptoms in a patient with a smoking history deserve the same suspicion as a respiratory complaint. Treating the endocrine derangement without asking why it is happening misses the underlying malignancy.

Priority nursing actions

Assess airway patency and respiratory status first, rate, depth, use of accessory muscles, and oxygen saturation, particularly if there is a known airway-obstructing mass or significant haemoptysis. Position the patient to optimise ventilation and have suction available if bleeding or secretions threaten the airway.

Manage pain proactively rather than reactively; lung cancer pain is often undertreated because it is attributed to something else early on. Monitor for signs of superior vena cava obstruction, facial and upper extremity swelling, distended neck veins, and headache, which is an oncological emergency requiring prompt escalation.

Coordinate with the multidisciplinary team early for staging workup, and provide honest, paced information as diagnosis and treatment decisions unfold. Psychological support matters here as much as physical care, a new cancer diagnosis in a patient who may already feel responsible because of a smoking history needs to be handled without judgement.

Labs and diagnostics to expect

Chest X-ray is usually the first image obtained, followed by CT of the chest for characterisation and staging. Bronchoscopy with biopsy, or CT-guided needle biopsy for peripheral lesions, provides tissue diagnosis and histological subtype, which determines treatment pathway.

PET scanning assesses metastatic spread, and brain imaging is frequently added given the propensity of lung cancer to metastasise to the brain. Expect serum electrolytes, particularly sodium and calcium, to be checked as a matter of course given how common paraneoplastic derangement is, alongside a full blood count and liver function tests as baseline staging workup.

Pulmonary function tests are done before surgical resection is considered, to establish whether the patient has the respiratory reserve to tolerate lobectomy or pneumonectomy.

Complications and their early signs

Watch for airway obstruction from tumour growth or bleeding, presenting as stridor, worsening dyspnoea, or new wheeze localised to one side. Malignant pleural effusion causes progressive breathlessness and reduced breath sounds at the affected base, and often recurs, requiring repeated drainage or pleurodesis.

Superior vena cava syndrome, facial swelling, distended neck and chest wall veins, and headache worse on bending forward, is an emergency and should prompt immediate escalation. Spinal cord compression from vertebral metastasis presents as new back pain with any change in limb strength, sensation, or bladder and bowel function, and requires urgent imaging.

Keep monitoring for the paraneoplastic pattern already described, unexplained hyponatraemia, hypercalcaemia, or new proximal weakness, since these can signal disease progression even when respiratory symptoms are stable.

Teaching that changes outcomes

Smoking cessation, even after diagnosis, improves treatment tolerance and outcomes, and should be offered without judgement rather than as a lecture. Provide practical cessation resources and follow up on them rather than mentioning it once.

Teach the patient and family to report any new cough character, haemoptysis, breathlessness, or bone pain promptly rather than waiting for a scheduled appointment, since several of the serious complications above progress quickly once they start. Explain what symptoms are expected from treatment itself, chemotherapy-related fatigue or radiation-related skin changes, versus what should be reported urgently, so families are not left guessing which changes matter.