Largest arm vein, medial surface, no adjacent artery, fewest valves, straightest path to axillary. Target diameter ≥3 mm (tourniquet-engorged).
2nd: Brachial vein
Paired, runs with brachial artery. More tortuous. Higher nerve risk from brachial plexus proximity. Use if basilic <3 mm.
3rd: Cephalic vein
Lateral arm. Sharp 90° turn at deltopectoral groove causes tip malposition in 18–30% of cephalic PICCs. Avoid if possible.
Right arm basilic: baseline · Left arm: +4 cm · Brachial: +2 cm · Cephalic: +2 cm
V.L. Hoshal described the first peripherally inserted central catheter in 1975, using a 16-gauge polyvinyl chloride catheter inserted into the antecubital fossa and advanced to the SVC. The motivation was simple: avoid the thoracic complication risk of subclavian and IJ insertion. The technique was largely ignored for a decade — home infusion therapy had not yet emerged as a clinical practice, so the advantage of arm-based long-term access was not yet clinically relevant.
InventionThe growth of outpatient antibiotic therapy (OPAT), home TPN for short bowel syndrome, and HIV-related home chemotherapy in the 1980s created a clinical need for long-term access that could be placed and maintained outside the hospital. PICCs could be inserted by trained nurses — not requiring a physician or sterile OR suite. This positioned them as the first widely nurse-placed central access device and transformed infusion nursing as a specialty.
Clinical ExpansionIntravascular ECG tip confirmation — using the saline column as an electrode and monitoring P-wave morphology — allowed real-time tip positioning verification without waiting for a post-procedure chest X-ray. The technique is based on the proximity of the catheter tip to the sinoatrial node: as the tip approaches the CAJ, the P-wave increases in amplitude and becomes biphasic. Maximum biphasic P-wave = optimal position. This eliminated the 1–4 hour delay between PICC placement and first use in many institutions.
Technology AdvanceThe basilic vein is the PICC vein of choice — largest caliber, fewest valves, medial arm location with no adjacent artery, and a smooth continuous path from upper arm through axillary to subclavian to SVC. The cephalic vein has a sharp angulation at the deltopectoral groove that causes malposition in 18–30% of cephalic PICCs. Unless the basilic is unavailable, use it.
Pre-insertion arm measurement is the primary determinant of tip position accuracy. Measure with the arm at 90° abduction (the position during insertion). Left arm PICCs need 4–5 cm more than right arm due to the longer path across the mediastinum. Failure to account for this is the most common cause of a "too short" PICC tip in the subclavian rather than SVC.
PICC-associated DVT risk is driven by: catheter-to-vein diameter ratio (catheter should be ≤45% of vein diameter), number of lumens (triple-lumen PICCs have 3× DVT rate of single-lumen), tip malposition in subclavian/proximal SVC, and underlying hypercoagulable state. Ultrasound-guided placement targeting basilic vein reduces DVT risk significantly vs blind antecubital placement.
Standard PICCs cannot withstand the pressure of CT contrast injection (300–500 psi). Power-injectable PICCs (stamped "Power PICC" or purple hub) are rated for high-pressure injection. Verify power-injection compatibility before contrast administration — using a non-rated PICC for power injection can rupture the catheter, embolizing fragments into the pulmonary circulation.