Respiratory, Cardiovascular, Neurologic, and Musculoskeletal Symptoms

Respiratory, Cardiovascular, Neurologic, and Musculoskeletal Symptoms

Respiratory Assessment

Respiratory symptoms demand focused triage because the cause may be infectious, treatment-related, thrombotic, structural, or malignant. Assess onset, work of breathing, SpO2, respiratory rate, cough, sputum, fever, chest pain, wheeze, hemoptysis, orthopnea, and activity tolerance.

Tie the picture to therapy: new dyspnea during neutropenia may be pneumonia or sepsis; a new cough or dyspnea after thoracic radiation or checkpoint-inhibitor therapy may be pneumonitis (an irAE treated with steroids, not antibiotics alone); sudden pleuritic chest pain with tachycardia and hypoxia suggests pulmonary embolism (PE), which is markedly more common in cancer due to a hypercoagulable state.

Supportive actions: positioning, protocol oxygen, monitoring, energy conservation. In palliative settings, dyspnea care includes a bedside fan, low-dose opioids, and anxiety support.

Cardiovascular Symptoms and Cardiotoxicity

Know the cardiotoxic agents. Anthracyclines (doxorubicin) cause cumulative, dose-related cardiomyopathy; risk rises notably above a lifetime doxorubicin dose of roughly 450-550 mg/m2, and dexrazoxane may be cardioprotective. Trastuzumab (HER2) causes usually reversible left-ventricular dysfunction, monitored by serial ejection fraction (echo or MUGA). Other risks: VEGF/TKI hypertension, QT prolongation, and immune myocarditis. Cancer also raises venous thromboembolism risk.

Escalate chest pain, new severe dyspnea, syncope, symptomatic hypotension, uncontrolled hypertension, a new symptomatic irregular rhythm, unilateral calf swelling, or stroke signs. Teach reporting of swelling, sudden weight gain, calf pain, and chest symptoms, and adherence to antihypertensives and anticoagulants.

Neurologic Red Flags

Neurologic symptoms arise from brain metastases, spinal cord compression, chemo-induced neuropathy, ICANS, metabolic shifts, or stroke. The classic emergency: new back pain with leg weakness, numbness, saddle anesthesia, or bowel/bladder dysfunction points to spinal cord compression, requiring immediate MRI and high-dose corticosteroids to preserve function. Confusion after CAR-T or bispecific therapy suggests ICANS; severe headache with thrombocytopenia raises intracranial bleeding concern.

Chemotherapy-induced peripheral neuropathy (CIPN) is caused by platinums (cisplatin, oxaliplatin), taxanes, vinca alkaloids, and bortezomib. Assess function, not just sensation: can the patient button clothes, feel the floor, use stairs, drive, or handle hot objects safely? Interventions: fall precautions, footwear advice, and physical/occupational therapy referral. Oxaliplatin uniquely causes cold-triggered acute neuropathy, so teach cold avoidance.

Musculoskeletal Function, Fatigue, and Falls

Musculoskeletal symptoms include arthralgia, myalgia, steroid myopathy, deconditioning, and bone metastases that risk pathologic fracture, hypercalcemia, and cord compression. Assess pain, movement effect, neuro changes, gait, and calcium symptoms. Cancer-related fatigue is the most prevalent oncology symptom, is distinct from ordinary tiredness, and often does not fully resolve with rest; evaluate anemia, sleep, pain, depression, medications, nutrition, and endocrine and infectious causes. Teach pacing, planned activity, and energy conservation, and revisit home-safety needs after every fall or near-fall.

Reassessment asks whether function improved, not only whether a number changed.

Distinguishing Treatment Effect From Emergency

The hardest OCN reasoning is separating an expected side effect from an emergency that shares the same words. Mild dyspnea on exertion that improves with rest in an anemic patient is different from dyspnea at rest with hypoxia and pleuritic pain, which is a possible PE. Tingling fingertips early in taxane therapy differ from ascending weakness with gait change, which threatens function. A dull steady backache differs from new, severe, band-like back pain with leg weakness. The nurse uses a few sorting questions: Is the symptom new or rapidly worsening? Does it occur at rest? Are there neurologic, cardiopulmonary, or perfusion changes?

Is it consistent with a known emergency pattern for this patient's disease and drugs? When the answer trends toward instability, the nurse acts first and grades later, because in oncology the cost of underreacting to cord compression, PE, or sepsis is far higher than the cost of an early evaluation.

Cardiac Surveillance and Functional Rehabilitation

Cardio-oncology surveillance is increasingly tested. Patients on anthracyclines or trastuzumab get a baseline ejection fraction and periodic re-checks, and the nurse reinforces why a missed echo or MUGA appointment matters and teaches early heart-failure reporting: ankle swelling, sudden weight gain of more than 2-3 lb in a day or 5 lb in a week, orthopnea, and a new cough. On the functional side, oncology rehabilitation is an active intervention, not an afterthought.

Physical therapy rebuilds strength, balance, and endurance; occupational therapy restores fine-motor function and energy-conserving routines; and early referral can prevent the deconditioning spiral that ends in falls and treatment delays. The nurse screens for stairs, assistive-device use, driving safety, and caregiver availability, then closes the loop by confirming that referrals occurred and that the patient is measurably steadier, stronger, and safer after the plan was put in place rather than simply reporting a lower symptom score on paper.

Throughout, the nurse resists dismissing fatigue as laziness or attributing every new symptom to the cancer itself, because reversible drivers such as anemia, hypothyroidism, depression, sleep disruption, and medication effects are common and treatable when actively sought.